Chevrolet-Silverado 1500 Pickup -
Dual AC blows cold air on passenger but hot on driver
Kristina (207.144.203.220) - Sun Aug 3 14:15:36 2008
I had my truck at the body shop for a week 1/2 and when I picked it up on Friday everything was fine. Parked the truck overnight and the battery was dead. BIL came over and jumped it but now temp gauge won't work and the Dual AC blows hot air on driver but cold air on passenger. Tried resetting it by removing pos (+) on battery for 30 minutes and temp gauge now works but AC problem is still there. Any ideas?
Reply #1 Stef (97.115.203.48) - Thu Aug 21 16:30:09 2008
This happened to me while driving my 2005 Silverado yesterday. I turned it off and tried again 30 minutes later and the A/C worked.
Reply #2 Louie (71.105.9.68) - Wed Aug 27 13:09:30 2008
I have an 2004 chev.Suburban. I experienced the same problem. hot air blowing out from the driver side, cold from the passanger. It seems this is a common problem. my inlaw just experienced the same with his Tahoe, blowing hot air in the front and cold in the rear. anyone have any solutions?
Reply #3 RS (72.190.0.137) - Mon Sep 1 15:36:25 2008
I just changed my battery and now the passenger side AC is blowing hot air, while the driver side is nice and cool. I have tried reseting by removing the + battery cable for 30 sec. I will take it to the shop tomorrow and see what they found.
Reply #4 Chase (75.185.57.172) - Sat Sep 6 18:42:47 2008
My 04 Silverado 5.3 L, started this today. I was cleaning it this morning and ran the battery dead. I jumped it and drove about 10 minutes and drivers side went from cold a/c to hot air in seconds, while the passenger side remained cold a/c. I turned the truck off and the a/c then worked dual again. Drove about another 10 minutes then it happened again. Killed the truck and restarted and it then worked fine for rest of the day/drive about 1-1/2. Will post if it comes up againHas anyone found a solution? Sounds like something with battery?
Reply #5 jameson pritchett (64.12.117.68) - Tue Sep 9 18:36:06 2008
had 2006 2500hd with a/c probloms the wiring harness on blower motor was bad 2 months later the truck caught fire so check your wirring harness on blower motor if its is half burned email me back and i will let you in on lawsuit against gm the more poeple we have the better chance we will get new trucks or all momey back we paid for them
Reply #6 rob van (96.228.67.169) - Tue Sep 9 21:52:07 2008
My wife's 2005 Chevy tahoe occasionally blows hot on the passenger side, but always cold on the passenger side. Sounds like same problem as above. It is very hot air, so obvious that the heater core is getting hot water flow. Turning off car and restarting fixes problem for a week or so. We can't find what is causing, but it sounds like the driver side electronic controller is sensing the driver side temperature is cooler than it really is, which causes the controller to increase the hot water flow to warm up the driver area. I don't think it's the blower bundle - the blower blows fine.
Reply #7 mitchell brown (192.76.82.89) - Wed Sep 10 10:14:56 2008
95 1500 chev. truck, air conditioner works for 20 mintues then stops, clutch will not engage. pressure ok, replaced low pressure switch, no help
Reply #8 Freddie (67.187.113.76) - Wed Sep 10 19:04:59 2008
I have a 05 silverado, and i am having the same problem as all of you except simply turning it off does not fix it, already went through that stage. the harness sounds like it may be a problem, but i dont know where to find(not extremely mechanically inclined, but i know a little.)it. if anyone has any suggestions it would be greatly appreciated.
Reply #9 dave (76.213.188.161) - Fri Sep 12 15:58:30 2008
problem is in an actuator in the dash. truck has 50k and dealer said it would cost about $500 to fix it since i didn't have the extended warranty.there are tech bulletins on this problem but no recall despite it being a fairly common problem.
Reply #10 chris (71.3.241.216) - Fri Sep 26 09:57:56 2008
It is a common problem. The cause is a temp. control accuator.My dealership told me $235.00 for the part and 1.2hrs labor for the drivers side but 4.8hrs labor for the passenger side. I turn off the engine and back on again and it seems to fix it for awhile.
Reply #11 MrPaul (69.179.205.33) - Tue Sep 30 10:01:06 2008
I just took my 2004 Silverado to the dealership. About 48k miles and it's doing the same thing. This occurred a couple times last summer but after I replaced my battery last week it hasn't gone away.Sure am glad I got the extended warranty.
Reply #12 dennis (71.173.100.138) - Tue Sep 30 21:32:29 2008
Had this problem for the first time Sunday ('05 Suburban). Passenger side blew very hot, driver side was fine, but everything was okay after turning off and restarting. Today, however, I had to replace the battery. After the new battery was in and I restarted it, the AC and fan were on and blowing hot air on he driver's side, even though I'm sure I didn't have the AC on before replacing the battery. This time it doesn't seem to want to fix itself. I don't get the connection to battery replacement at all.
Reply #13 Carlotta (65.169.176.254) - Fri Oct 3 15:09:51 2008
My a/c and circulating fan stopped working. Replaced te relay for the a/c comp and it turned on. Then it stopped again. The fan starting work again, but the force of air is not as strong as it should be. Please help!
Reply #14 vik (99.243.247.206) - Wed Oct 22 12:01:23 2008
i have 2004 chevy3500 disel duamax it have heat on passengerside but not on driverside what could be wrong can please help with and picture how to fix it
Reply #15 Ronnie (72.16.106.188) - Sat Nov 1 21:44:18 2008
I have the same cold/hot problem, on a 06 Avelanche. It started at 501 miles, been in the shop 6 or 7 times. They re-programmed the controller, then replaced it, then changed out the wireing, replaced the accuator twice, and I still have the problem.Some times my alternator makes a whineing sound, but have not related the two togeather. Any help or suggestions?? The Chevy dealer that I go to, hasn't admitted that nayone else has this problem. Glad to find this board! Ron
Reply #16 Dar (71.54.34.188) - Tue Nov 11 15:44:59 2008
I have a 2004 Silverado 2500...battery went dead...new battery, hot air. Advance auto advised discount pos terminal. Dealer said Module was bad...estimated 450-500 to fix. Found a solution on internet:1) Start truck 2) A/C comes out defrost - wait about 10 to 15 secs 3) A/C then starts coming out the floor vents for about 5 seconds 4) A/C then starts coming out the dash vents. 5) While the A/C is coming out the dash vents, turn A/C OFF (otherwise it cycles back to defrost for good). 6) Turn truck OFF Restart truck. It WORKS!!!!!!!!!!! and it did not cost me anything!
Reply #17 ROGER (98.196.212.115) - Wed Dec 10 18:05:11 2008
HEATER BLOWS HOT ON PASSENGER SIDE AND COLD ON DRIVERS SIDE. REPLACED DUAL CONTROL PANEL AND DISCONNECTED BATTERY FOR EXTENDED TIME. STILL SAME PROBLEM. ALL SUGGESTIONS WILL BE APPRECIATED.
Reply #18 Mark (167.88.178.70) - Thu Dec 11 15:17:25 2008
My issue is the same, the drivers side blew out hot air, passenger side blows out cold air. Defrost and floor vents not working, dials not working. I took my truck to a dealership and they fixed it within one day. The problem was a bad control head. $450 (including tax and diagnostic test.)
Reply #19 Ceasar (64.91.138.211) - Tue Dec 16 10:24:28 2008
I already went thru all the different problems and including the turn of and start problem solver. And now the heater just will not work.
Reply #20 jbf (166.217.203.38) - Mon Dec 22 17:22:28 2008
my wire harness blower moter caught fire burned up the truck, it is covered by warrenty but it has been nearly a month that the truck has been at dealership to be fixed, feals like i am getting screwed here. any body know anything or have advise. i have called chevy to try to get a car or anything to drive while they hold mine. every time i call the 1-800 number i get the run around for twenty minuets or so then when i finally get to talk to some one in charge they tell me i will hear back from then in ten days. well ten days passed twice all ready. chevy should not get any bail out money from us when they dont even help those that help them.
Reply #21 Ruth (199.247.51.61) - Sun Dec 28 17:08:34 2008
hi, i have a problem with my chev. 2007 impala, there is no hot air coming at all through the dash board to defrost the windshield; but the fans are working. when stepping on the accelarator the hot air comes on, but air does not go throught the dash board air vents. What can be the problem?
Reply #22 Mark (167.88.178.70) - Mon Dec 29 09:25:56 2008
Ruth, That is a weird issue, however that should still be under warranty.
Reply #23 Brenda (66.63.109.240) - Sat Jan 3 11:17:01 2009
Hi, I am really upset, I bought a 2008 Chevrolet Sierra full size pickup/ regular cab, it's not even 3 months old yet/I have to keep it in the garage and vcannot drive it because the heater will not work to defrost the windows, etc.... Until the motor is HOT! Took it to get repaired, I was told that it's not covered BECAUSE it's a REGULAR CAB!!!!!!!! What does that have to do with it/it's a brand new truck that I have not been able to drive, I live in Maine and the weather is quite cold now! I can't even go visiting, because I could'nt let the truck cool off! Has anyone had this issue?? I paid cash for this BRAND NEW TRUCK and the treatment I'm getting is very UNCALLED FOR! Please can anyone tell me what to do??? Brenda
Reply #24 Mark (167.88.178.70) - Mon Jan 5 12:35:14 2009
Brenda, The fact that it is a regular cab has nothing to do with the problem. Did you ask them why that mattered? Did you buy it from a dealership or a person? It should be covered under warranty but if you bought it from a private person than there might be something in effect to void the warranty.
Reply #25 ken (216.49.103.96) - Wed Jan 7 16:42:48 2009
I have a 2003 Chevy Z71 extended cab. Heater motor quit...then for no reason started running again....after the key was off and out of the ignition! Heater control module ($100 at dealer)?
Reply #26 kris (161.51.11.6) - Thu Jan 15 00:27:08 2009
ok i have a 04 silverado 1500 i had it for 1 year i got it used in 05 i had the driver side blow hot while the passenger side blew cold took it to chevy it was under warranty they had to replace the motor for the doors there is 2 doors inside the dash that are motors they cost over 450 each and the 2 by the drive cost 1500 just to have the dash pulled out and a year after the passenger doors were replaced the driver side had to be replaced and now a year and 3 months later the passenger is bad again the price for chevy to fix is retarded and every time i take my truck into the chevy shop it leaves with a problem its a scam
Reply #27 Steve (97.89.2.170) - Fri Jan 16 14:02:37 2009
2006 Chevy 3500 Silverado Crew Cab Disel. While the truck was in warranty and the problem of hot air on one side and cold on the other was intermitment Chevy could not reproduce. They didn't own up to it being a problem. Now I have 75k miles and have been told the accuator control is the problem. does anyone know exactly where its located and how to access it? I've heard that it can be without pulling the dash. Is that correct?
Reply #28 Danny (205.188.117.68) - Sun Jan 18 18:16:21 2009
i have a 2003 silverado and im having the same problems as some of the others. i have heat all the time on the driver side and cold/hot on the passenger side. i have replace the actuator for the driver side and the actual climate controls in the dash and neither replacement fixed my problem. i done some reading online and read that there is a computer for the a/c and heater controls, is this true?..if anyone could help me fix my problem please let me know, thanks!
Reply #29 Ronnie (216.170.151.122) - Sun Jan 25 20:04:46 2009
This is happening to me right now. The ac/heat only blows when it wants to. The dealership quoted me $1800 for parts and labor. My previous 2005 Chevy Silverado did the same thing at 60k miles so I traded it. Now my new chevy is doing it at 65000 miles. I'm ready for Chevy to step up to the plate and do the right thing. When I told the service adviser what was happening he named off the problem without a diagnostic.
Reply #30 John (68.27.143.240) - Sun Feb 15 05:36:34 2009
About 2 weeks ago I bought a used 2003 Chevy Suburban and everything has worked fine, without a hitch. But today, it started blowing only cold air, even when I adjusted the digital dial to 90 degrees. One other person made mention of the "whine" from under the hood, and I have noticed that as well for the past week. My battery did not die nor was replaced, but it did run a little low today from having my laptop hooked up. Any updates on this issue? I really hate to take it into the dealership to get the usual run-around from them.
Reply #31 Rena (68.28.59.121) - Tue Mar 17 16:46:56 2009
We hae been having the same problem for about a month. We have a 2004 Silverado 1500 extended cab. We haven't taken it in to be looked yet. At least we kinda know what to expect now.
Reply #32 john (76.178.124.130) - Sun Mar 22 11:15:39 2009
2005 Chev z71...problem: air conditioning on and working well, then it goes off and heater goes on, sometimes both vents sometimes just driver vent, with passenger side still blowing cold. (mine has a weirdo habit--it always goes out as I exit onto an uphill strecth of road, just as I'm turning the wheel...weird.) Called dealership mechanic shop--complaint common and expensive to fix, but if I've noticed that I'm not getting a big puddle of water under the truck, then take take my shop vac and put it on the evaporator drain hose on the firewhall and let it suck for a while and then switch to blow and back to suck and, just keep it up for a while...and calll him back and let him know if it helped...Problem hasn't returned and I called him and he said I was lucky, the new air conditioners clog up easier and need to be kept clean or they can give you fits...but also if the sensor electrrics crap out it's an expensive fix...
Reply #33 john (70.104.202.122) - Tue Mar 24 20:09:43 2009
i have an 04 chev silverado 1500 ext 5.3l. for some reason even when my truck is warmed up all the way(almost at 210) it wont blow hot air at all. its freezeing. and usually playing with all the knobs and what not fixes it but it takes even longer now and the only thing that seems to fix it is when i drive it and the rpms go up. but i also noticed when it plays this game that the temp creeps up for a mintue and then comes back down and its fine. any help? a body told me the harness for the blower.
Reply #34 chevy (64.12.116.198) - Mon Mar 30 09:54:33 2009
has anyone had there body computer changed?...the body computer is located under the steering wheel shaft behind a piece of interior paneling...it controls almost all of the interior electical componets like the interior lights, gauages, radio, heater, a/c and so on...let me know if it works for you
Reply #35 troy soup (24.117.13.144) - Thu Apr 16 23:51:26 2009
I had exact same problem after jumping my '05 AvalancheSOLUTION: Start engine, turn on ac, turn off ignition, then turn ignition back on with out starting engine. Leave as is. Remove positive cable from the battery, wait 10 mins, return the cable, turn ignition completely off, then restart. 1st attempt simply reversed the hot/cold sides but I had poor intermittent contact when I connected the cable, 2nd try I really pegged the cable for good "one-time" contact & it fixed the problem.
Reply #36 jeff (208.39.128.10) - Mon Apr 20 19:54:10 2009
I have a 2006 sil. reg. cab. 1500 4.3. ac and heater prob.was under warranty! now its not!4th time going to dealer.prob. started 30, 000m. 2yrs.old.actuator was replaced prob. was okay then came back the oppossite. hot air on pass, cold on driver side.ac wont engage correctly. does anyone have a solution?
Reply #37 chevy (205.188.112.42) - Tue Apr 21 19:46:51 2009
i've tried everything and still can not get the driver side control to work...and im not paying gm a bunch of money to fix poor electronics...chevy just isnt what it use to be!
Reply #38 Tony (72.91.196.69) - Tue Apr 28 22:21:19 2009
I have a 2003 Burb. I am having the same hot cold issue. Had to replace the connector for the blower motor as it melted away at 72000 miles. Air works when it feels like it. I had a bad speedo issue as well, and ordered a new stepper motor for it on Ebay and replaced it myself for $40.00. The problem is that the big three buy the cheapest parts in the industry(lowest bid gets the job) then the product fails and the big three sue the little guy that produced the part. Because they get recalls. They avoid the recall until they have no chice. This website is a great tool to spread the word. Can anyone help me with this hot cold issue?
Reply #39 Tom E (74.197.67.209) - Tue Apr 28 22:41:58 2009
I just had the same problem after I disconnected and reconnected the battery. The drivers side blew hot all the time no matter what the settings were and the passenger side worked OK. This happened to me about a year ago, but started working OK after I turned off the engine are restarted it. I have not had the problem until a couple of days ago. This time, turning off the engine or ignition would not reset it.I noticed that the drivers side would blow cold air when the ignition is first turned on, then after about 10 seconds would go to hot. This means the controller and motor actuator are working. This is what I did to fix it. Adjusted the passenger side to full hot and the drivers side to full cold and put the system in auto mode. Then, turned off the ignition and turned it back on. In auto mode you will see the fan speed auto adjusting up and down. Then, I reversed the settings, drivers full hot (90) and the passenger full cold (60). Put it in auto mode and turn off the ignition and then back on. The system started working correctly after that. My guess is that somehow the system looses its reference point for temperature, so a restart or two in auto mode will put it back in sync. Hope this helps.
Reply #40 Jade (97.104.14.240) - Wed Apr 29 20:12:39 2009
Tom E. Thank you. Your solution is working!
Reply #41 Jim A (65.40.49.183) - Sat May 2 13:34:19 2009
My 2005 Silverado's A/C stopped blowing, inpected all the fuses and relays swapping relays with known good ones and can't seem to find the problem. Also, the Daytime Running Lights have also stopped working. Any ideas? I did notice the compressor trys to kick in then stops.
Reply #42 Dave (66.177.224.181) - Thu May 7 16:52:36 2009
My 03 has had HVAC problems.Lessons learned: Check wiring behind glove box (chaffed wiring) Check temperture sensors (known to fail) Check acuator (gear breaks internally - new has electrical and physical stop) How to reset your HVAC module: Remove your hvac fuse for 10 sec - reinstall fuse. Start engine "DO NOT TOUCH ANYTHING FOR 3 MINUTES" Recalibration of module will accure when power is lost (fuse pulled, battery changed or died) If hvac reset did not work you have a trouble code - reset BCM There are two ways to reset your body control module Go to the GENERAL Remove BOTH battery cables (for the sake of CAUTION remove air bag fuse and wait 5 MINUTES) Hold both cables together for 1 minute - drains KAM (keep alive memory). Put everything back together Start the engine "DO NOT TOUCH ANYTHING FOR 3 MINUTES" If you have no broken parts - system not default (normal operation).
Reply #43 chevy (64.12.116.198) - Fri May 8 10:12:15 2009
hey dave, i tried everything you said but i still can get my driver side to change from hot to cold. i have replaced the acuator, the dash controls and i have checked the wiring but im not exactly sure if im looking at the right wiring. and i dont know anything about the temp sensors, where are they located at?...if you dont mind would you email me at gmcmanv6@aol.com
Reply #44 M Jones (76.101.130.53) - Sun May 10 14:47:21 2009
I have 2004 siverado duel climate sliders control.Passenger side flutered hot and cold when ac is on , pass. side cold .pulled battery and now its just hot on the pass. side and cold on the driver side.if this truck needs an actuator or a software update and GM doesn't get on band wagon and start fixing these defective mechinisms in their vehicles they can watch me go to ford for my next truck or maybe toyota.We pay $28000.00 and up for these vehicles and they won't fix their own engineering and mrfg. faults.Thats the problem with the big three is owning up and producing resolutions that keep people buying and referring their vehicles.If they want us to buy their product then they need to stand behind them.I have bought American cars my whole life (47years old) and lived in Detroit for 40 years and never worked in the auto business but I can tell you no one ever wanted to pay me what those guys make screwing up in the factories.I don't want to piss off anyone but I know a lot of guys that work for the big 3 and they all wont pay me or anyone else what their package pays for an hours work and I mean real work.
Reply #45 revjhohn (24.155.154.237) - Mon May 11 21:53:01 2009
I have a 97 chevy 1500 the A/C fan blows plenty strong but little air. All other settings I have strong air but not on the A/C side. Any ideas?
Reply #46 Smoke (69.152.44.79) - Fri May 22 01:13:36 2009
I have a 2004 silverado reg cab and im having the same problem pretty much it seems to b blowin hot air on the driver side and snowballs on the passenger could some please help me!!!!!!
Reply #47 gman (99.192.6.8) - Mon May 25 14:15:04 2009
hi , i have 2004 avalanche blows hot driver side and cold passenger, tried unhooking battery switched the hoit and cold to opposite sides, its gone now for actuator 300$ installed only takes hour
Reply #48 DB (96.19.145.21) - Mon Jun 1 21:57:17 2009
Not sure if I'm glad I found this site or not. 2004 Silverado LT AC blows hot on passnger side sometimes. Mostly when my wife gets in. I think she thinks I control this funtion "wish I could" anyway if I turn AC on and off a few times seems to work right but can take 10 min. or so. This has been a trouble free truck. I'm at 97k runs like a top except for the AC deal. I really want to keep it for a few more years but not sure if I should. Maybe Obama will fix it Ha Ha
Reply #49 lckylckr29 (65.34.11.3) - Mon Jun 8 12:49:29 2009
Same problem, chev/silv 1500 a/c.leaking water under dash, hot on driver side, cold on passenger. I am a full blown chevy fanatic, but if chevy don't step up to the plate, Toyota is looking pretty darn tempting.
Reply #50 disappointed gm man (64.12.116.198) - Tue Jun 16 10:51:20 2009
im disappointed in gm, they dont make what that use to make and its getting worse every yr! i bought a new gm truck in 1992 and drove it 150, 000 miles before it gave any trouble. i got a 2003 truck now and i lost count on the problems ive had out of it..like i said im disppointed!
Reply #51 Ken (134.131.125.50) - Wed Jun 17 15:42:17 2009
O5 Silverado w/ Dual ControlsProblem: A/C works for about 20 to 30 minutes then warm air blows out both sides. I can turn the ignition off then back on and the A/C performs normally .. unitl another 20 to 30 minutes. Any suggestions?
Reply #52 L.E.E (206.255.1.137) - Sat Jun 20 11:39:21 2009
I have a '04 Tahoe LT 5.3, i have the same problem with hot air on drivers side and cold every where else. It's weird but it also seems to only do this when i turn around/turn sharp corner. I don't want to waste $500 on an accuator or on something that's going to break again later. Did anyone actually figure out what this is and will the problem go away FOR GOOD??? Shouldn't GM recall something?????
Reply #53 L.E.E (206.255.1.137) - Sat Jun 20 11:42:31 2009
I have a '04 Tahoe LT 5.3, i have the same problem with hot air on drivers side and cold every where else. It's weird but it also seems to only do this when i turn around/turn sharp corner. The only way to fix it is to turn my tahoe off and back on. I don't want to waste $500 on an accuator or on something that's going to break again later. Did anyone actually figure out what this is and will the problem go away FOR GOOD??? Shouldn't GM recall something?????
Reply #54 Jim (24.236.42.139) - Sun Jun 21 00:17:28 2009
I have the drivers side hot, passenger cold situation last summer. Twice the system was recharged, with steel filings plugging the driver side (according to Goodyear). Now they have replaced the evaporator unit, but yesterday the problem reapppeared. I am $1, 000 into this project, and no end in sight.I just wish GM would come clean with this, and fess up to the answer to all of our questions. This is the 54th post on this topic, and if each paid what I did, we are talking major cost. Bankrupt? Wonder why.
Reply #55 Jeff (69.149.76.186) - Wed Jun 24 19:01:12 2009
Same Problem. 03' Silverado. Blows cold (exceptionally well) for 10 minutes then swithces to hot. Replaced the battery last year (finally went dead after 5 yrs) and the problem went away. Back again this year. My only saving grace is my 5 speed. I can shut down and restart whilst in motion. Don't have dual climate control.
Reply #56 JBP (66.167.50.205) - Wed Jun 24 23:00:00 2009
Tahoe Z71 2005 - 85k miles, clean, and AC condenser appears to work but the fan has a mind of its own. The car has passenger AC vents and a control that works fine - thank goodness. Back to the front panel, the blower fan 1) sometimes operates with the car turned off and no keys in the ignition 2) sometimes does not operate when driving, but feeds cool air with the vent open 3) does not work at all under any of the control settings or 4) sometimes works.This is one long detailed set of postings. I have not experienced dual cold/hot, the blower does not run. Reluctant to drop it off at a dealer with all that is going on, and pay to train someone on the AC. Any ideas?
Reply #57 Jim Lovell (66.168.225.153) - Fri Jun 26 19:28:35 2009
2005 Silverado. AC blows good and cold for 20 minutes then blows warm. Cut off and restart vehicle and it works fine again for 20 minutes or so.
Reply #58 Jason (68.114.51.144) - Sun Jun 28 19:14:59 2009
I have a 04' silverado 1500 Z71 5.3L, having trouble with the ac compressor, it comes on for about 5 sec. then shuts off for 10 sec. an so on.... is there a quick fix?
Reply #59 jerry hernandez (205.56.145.36) - Mon Jun 29 18:35:25 2009
did anyone find the solution to this AC problem, mine blows hot air on the drivers side and cool on the passenger. i have a 2004 v6 4.3l chevy silverado. apparently it just started happening. im coming back from a deployment, so i want to know as much about this topic before i break money to GM. if anyone has the solution, can you please email me at ghernandez@cg54.navy.milthank you.
Reply #60 Mike Hicks (207.193.36.124) - Tue Jun 30 13:08:14 2009
I talked to the dept. of highway safety today. My truck is blowing hot on driver side and cold on the passenger side. They said they have had a few complaints. I told them to read the internet there's 100's of people with the same problem. They said to file a complaint at www.safecars.gov and they can get it investigated.
Reply #61 John (66.6.116.237) - Wed Jul 1 13:50:36 2009
I have a '04 Silverado and just had the battery replaced. Well, the AC was blowing out hot air on drivers side and cool on the passenger side.Solution: I disconnected the positive cable to the battery and pulled the fuse for the AC computer. Waited 10 minutes and reconnected the battery installed fuse and now everything is working properly (knock on wood). hopefully this will work for everyone else.
Reply #62 Bill (68.89.71.156) - Wed Jul 1 23:27:22 2009
See Reply #39Just had my battery changed (2005 Z71 Pickup)and had same problems. Hot, hot air on driver side and normal on passenger. Found this site and just tried Tom's suggestion (Reply #39) and bam it worked!! Thanks. I will report back if it is temporary.
Reply #63 Greg R (72.186.133.132) - Sat Jul 4 10:36:26 2009
I have a 2004 Silverado and i went on vacation left the truck parked in my driveway for a week and when i came back the batt was dead and the a/c is blowing hot on the pass side and cold on the driver side and also lost all power to my controls on the driver door locks, mirrors, and windows anyone got any ideas i am attempting to disconnect the batt for 30min ti see if that works.
Reply #64 Jackson (70.214.105.179) - Sun Jul 5 01:46:15 2009
2007 GMC denali xl Exact same problem as everyone else, hot on drivers side cold on passenger and in aux (back), not happy abt this obvious GM problem. Ideas folks let us know answers seem to be all over the board whether it is actuator or what. Has anyone had this fixed if so what was it that fixed it.
Reply #65 CJ (69.68.207.164) - Sun Jul 5 21:12:17 2009
I have a 2004 1500 silverado and my A/C quit on me. It doesnt work...wont blow thru the vents but when i turn the AC unit on i hear it going just nothing is coming thru the vents. Now wheni drive on the freeway cold air comes thru the vents but i am wondering how or what i can do to fix this myself. Thanks
Reply #66 Rae-Rae (70.241.26.55) - Mon Jul 6 21:50:46 2009
PO'ed I just spent $1300 fixing my 2005 Tahoe Z71, including replacing the battery. A week later the same problem everyone else is having, drivers side blows hot and passenger and rear blows cold. When are they going to do a recall or fix this without charging for it? Obviously this is a widespread problem.
Reply #67 Rae-Rae (70.241.26.55) - Mon Jul 6 21:51:09 2009
PO'ed I just spent $1300 fixing my 2005 Tahoe Z71, including replacing the battery. A week later the same problem everyone else is having, drivers side blows hot and passenger and rear blows cold. When are they going to do a recall or fix this without charging for it? Obviously this is a widespread problem.
Reply #68 Adrian (32.179.45.132) - Wed Jul 8 19:40:45 2009
I had the same problem today with my 2003 Chevy Silverado 2500hd diesel. Drivers side hot and the passenger side cold, drove it like that til I got home then turned the truck off then back on. Works fine now but still called the dealership when I came in. Service department said that what causes that to happen is the accuator gets stuck and when you turn the truck off and back on it fixes the problem. They told me not to worry about it and it shouldnt keep doing it. As far as battery issues I havent had any problems with my batteries. Hope this helps but I am with everyone else GM needs to do a recall.
Reply #69 John Wahl (70.177.46.98) - Thu Jul 9 18:06:54 2009
06 Chevy 2500. Hot on drivers, cold on passenger. In the shop twice with no resolution. Just adding my experience to the many posts here. Will try some of the solutions and report back.
Reply #70 julius early (72.222.144.216) - Fri Jul 10 18:06:44 2009
Same stuff as everyone else on my 03 Silverado with 69k. I find it interesting that all of the problems came after the battery was change. Now, I realize I just recently changed my battery. I will try the suggestions above and see if they worked.
Reply #71 Ed (75.130.172.24) - Sun Jul 12 17:43:16 2009
WoW!!! Same problem on 2004 Avalanche - got depressed reading accounts of money spent with no success. I decided to try one of the remedies and it worked.Background: My Avalanche started blowing HOT air out all AC vents when in AC mode. (Hot was hotter than any hair dryer I've seen on max.) At first this was intermittent. Then my battery died and I put in a new one. AC blew hot air full time. Theory: From the start I figured it was electrical/computer related. Belief became stronger after battery replacement. I believe that fluctuating or inconsistent current to AC controls/computer with battery problem created intermittent issue. When battery was replaced it left computer in a confused state only allowing heat. Solution: Used the #39. 1)Turned ignition on and AC in Auto mode. Adjusted temperatures to extremes on opposite sides; 60 on driver, 90 on passenger side. Shut off engine 2)Turned ignition on again with AC in Auto mode. Adjusted temperatures to extremes on opposite sides; 90 on driver, 60 on passenger side. Shut off engine 3)Turned ignition on again with AC in Auto mode. Adjusted temperatures to same on both sides; 70 on driver, 70 on passenger side. Waited for 5 minutes in idle to see if it would stick - - SO FAR SO GOOD! HOPE THIS WILL WORK FOR OTHERS! Thanks - great forum/board
Reply #72 Kathy (24.42.194.118) - Tue Jul 14 17:55:19 2009
My husband just changed the battery in his '05 Tahoe and the A/C was blowing only hot air. Googled "A/C blowing hot air after battery change" and found this web site. Tried suggestion #39 and after 2 tries it worked. He is now a happy man. Great web site.
Reply #73 Tony (63.169.77.197) - Wed Jul 15 16:44:44 2009
This same issue happened to my 2007 New Silverado LTZ. The battery died and after I jumped it the Passenger side was blowing cold while the driver side was blowing hot. I called the dealer and they wanted $100.00 for my extended warranty deductible. The Service Tech knew exactly what the issue was and he said they needed to reprogram the Computer. I am going to try out Suggestion #39 since it seems like its working for everyone else. Thanks, -T
Reply #74 WILEY (66.210.61.254) - Thu Jul 16 15:28:13 2009
04 Suburban, dual zone AC, same problem as everyone else. Driver's side blows hot, but not all the time. Sometimes after a turn to the left and onto a interstate ramp, sometimes while sitting idle for a few minutes, sometimes at interstate speeds. Most times I can just turn it off, and it will correct itself. Sometimes I have to turn it off multiple times. This same thing happened on an 04 Silverado I had previously. I bought that one new, and it was repaired under warranty, but it took two trips to the dealership for them to fix it right. I'm NOT going through that with the Suburban. I plan to try the suggestions above first before replacing any parts. There are multiple components int he system, and I'm a great "parts changer", but the system has way too many points of failure. It seems IMPOSSIBLE to troubleshoot, more than likely I'd probably change every part before I got it to work!
Reply #75 Kevin Kizer (69.38.8.118) - Fri Jul 17 09:34:26 2009
I am having a similar issue with my 2003 Silverado Z71 extended cab, I get cold air out of both passenger and drivers side vents until I stop at a light. When in motion the systems seems to work fine, but when not moving it blows hot air. If if rev the engine to 2000 rpm or more I get cool air. Any ideas? Thanks in advance.....
Reply #76 Brad (72.150.83.185) - Sat Jul 18 03:43:18 2009
Ok I have a 03 Silverado 1500 (85k miles) LT Digital Dual Climate Controls...my problem is similar to everyone's but I have lots of problems. While at a red light my engine surges and idles around 500 rpms or lower and the air barely even blows if at all when I pick up speed like highway speed it seems to cool but the fan speed is not even half speed when the display says full blast. I'm gonna try these tricks everyone has mentioned but honestly I don't think it will help. Oh and I bought a new Climate Control Unit and it did the same thing barely blows at idle and even when revved up, also with both climate control units when I cut the vehicle off the vents still are blowing for a good 5-10 mins. It must be a relay, sensor, or something wrong with the blower motor, or at least that is probably part of my problem. Well if anyone has any ideas feel free to hit me up on email... : b.a.miller6@gmail.com I agree its ridiculous that a 2003-2007 model chevy is obviously having some defect in there A/C system and there is no bulletins or recalls nothing from chevy offering to even tell customers what they need to fix it...even if we have to buy it I mean they need to at least man up and admit there is an obvious issue...
Reply #77 otis (70.110.31.19) - Mon Jul 20 19:17:15 2009
Had the same issue on a 2004 Suburban; replaced battery then had only hot on driver side. Although, I do not have auto controls, I performed a similiar sequence to #71 Ed's response. 1)Turned AC on with driver side heat all the way hot with passenger side all the way cold 2) Started engine and ran for a 10 or 15 seconds 3) Stopped engine 4) Changed driver to full cold and passenger to full hot 5) Started engine and ran for 10 or 15 seconds 6) Stopped engine 7) Placed controls in center 8) Started engine Controls worked properly. Thanks folks and good luck to the other struggling with this GM nonsense.
Reply #78 Jamie (64.234.39.24) - Tue Jul 21 18:05:51 2009
Just changed the battery in my 2005 Chevy Silverado Z71 and sure enough, my issue is the drivers side blowing cold and passenger blowing hot. I will try the tips suggested and hope they work. I can't believe this is such a widespread problem and GM says nothing.
Reply #79 Jamie (64.234.39.24) - Tue Jul 21 18:13:42 2009
TO Follow up, I followed Otis' #77 suggestion (just did opposite) and mine is now working. Thanks for the fix!
Reply #80 Julius (98.25.1.172) - Sat Jul 25 16:48:41 2009
Hi, I have a 2004 Silverado that has 22, 000 miles on it and the battery went dead the other day. I replaced the battery and now the AC only works on the driver side and heat continues to blow on the driver side. This is ridiculous to me and I can't seem to figure out why a recall has not been initiated. I wonder if I should call 20/20 and let them know the GM is not taking care of their customers. R, Free
Reply #81 Russ (66.243.210.69) - Sun Jul 26 06:40:56 2009
I have a 2004 Silverado 1500 WT. When the truck was parked, my son was playing with the controls. When I went to drive off with the AC on, the drivers side was hot and passenger side was cold. So I ended up taking out the control mod and inspected it and all looked ok so I put it back in. Then I found this site and ended up doing what Reply 39 suggested. Now I have the opposite problem. Drivers side is cold, passengers side is hot. It has to be a computer setting. I am going to mess around with it again and I let you guys know what I find out. Good discussion.
Reply #82 Anthony (68.105.150.13) - Sun Jul 26 21:10:23 2009
2004 Suburban dual control a/c. For the past couple of months the driver side has been doing the hot air thing. Turning the engine off would fix the problem. Then on July 25 2009 battery was dead. Replaced battery. Now driver side blows hot air 10 seconds after starting car, like clock work, every time. Post #39 was the exact description of my problem and the exact solution to my problem. Thanks Tom E.
Reply #83 Norm M. (67.214.52.183) - Mon Jul 27 09:45:30 2009
I put in a new battery into my 04' TAHOE and the driver side would blow cold and pass. side hot when in AC mode. I followed REPLY #39 from Tom E. and it is working fine right now. It took a couple of tries to get it working...but is is worth it...don't get frustrated if it does not work the first time.
Reply #84 Russ (66.243.208.86) - Mon Jul 27 17:17:43 2009
Reply #81 Russ (66.243.210.69) - Sun Jul 26 06:40:56 2009I have a 2004 Silverado 1500 WT. When the truck was parked, my son was playing with the controls. When I went to drive off with the AC on, the drivers side was hot and passenger side was cold. So I ended up taking out the control mod and inspected it and all looked ok so I put it back in. Then I found this site and ended up doing what Reply 39 suggested. Now I have the opposite problem. Drivers side is cold, passengers side is hot. It has to be a computer setting. I am going to mess around with it again and I let you guys know what I find out. Good discussion. Follow Up - 2 Days later, still stuck on Drivers side cold and passengers side hot. Grrrrr!
Reply #85 julie (206.53.157.46) - Tue Jul 28 01:06:29 2009
I have an 05 Silverado 1500 with the same problem.Mine goes from blowing cold to blowing so hot that you can't stay in the vehicle even when the unit is turned off. The first time it happened I just parked it and later it worked fine. This morning it did it again and I turned the vehicle off and back on and it worked fine.I think its the accuator because since I bought new there has been a tapping noise under the dash. The dealer said the noise was normal. Apparently not after seeing this website. I did have a Monte Carlo whose AC would shut off if the battery was going bad. So I can see why people would think that's the problem That's what I thought was wrong with this Silverado. I'm still nervous that it may catch fire like some have said the other thing is all the guages are going out. It started with the speedometer and one by one they stop working. I know there was a recall for that problem but the last I heard 05 wasn't included.
Reply #86 Creig (24.214.154.71) - Wed Jul 29 10:09:37 2009
#39 post worked for me! When it was cold in February this year, I took my 2006 Silverado in to get a new CD player installed. They had to disconnect my battery and I never thought anything about it. Well this summer I have been fighting with the same AC problem: blowing cold at first, then extremely hot until you cut off truck and restart. I found this forum yesterday, tried #39 directions and so far so good! Probably saved me a minimum of $500 bucks at dealership! Try it and save yourself some cash!! Thanks Tom!
Reply #87 Russ (216.227.3.250) - Wed Jul 29 19:51:30 2009
Reply #84 Russ (66.243.208.86) - Mon Jul 27 17:17:43 2009Reply #81 Russ (66.243.210.69) - Sun Jul 26 06:40:56 2009 I have a 2004 Silverado 1500 WT. When the truck was parked, my son was playing with the controls. When I went to drive off with the AC on, the drivers side was hot and passenger side was cold. So I ended up taking out the control mod and inspected it and all looked ok so I put it back in. Then I found this site and ended up doing what Reply 39 suggested. Now I have the opposite problem. Drivers side is cold, passengers side is hot. It has to be a computer setting. I am going to mess around with it again and I let you guys know what I find out. Good discussion. Follow Up - 2 Days later, still stuck on Drivers side cold and passengers side hot. Grrrrr! Follow up - 4 days later. Truck is working properly. Thanks a bunch Tom!
Reply #88 Ryan (76.181.58.190) - Thu Jul 30 18:01:28 2009
The combination of 16 and 35 fixed my problem, try these things before you take your truck in and have the dealers charge you a $100 to reprogram it. Good luck!
Reply #89 PT (70.246.92.188) - Thu Jul 30 19:09:28 2009
2004 Tahoe; exact same problem. Driver's side turns hot while passenger side stays cold. I just tried #39, but the problem never happened until I drove 10-20 miles (or more sometimes). I'll re-post in a week with results.
Reply #90 chris (64.12.116.198) - Fri Jul 31 21:44:41 2009
My 2006 Silverado 2500HD does the same thing as all of your's.I too, was able to shut the ignition off, restart the truck, and it would work fine for a month or so at a time. Two days ago, the truck went in for repairs of the EGR valve, and the dealership tech had to disconnect the batteries (2) to perform the work. Now, my driver side is hot after 10 seconds, and will not "reset" itself by simply shutting the engine and restarting. I plan on showing this forum to the tech and see what line of crap I am fed.
Reply #91 Tom G (69.121.155.65) - Sat Aug 1 09:16:41 2009
I have a 2005 Silverado with 35k miles and smelled and electrical burn briefly two weeks ago. My blower then failed. Cost $317 at dealer to have fixed (shorted out resister and connector). Last night was driving home from work and the A/C turned to high heat. I'm disappointed in GM after reading this forum.
Reply #92 Amanda (75.107.222.248) - Sat Aug 1 17:14:20 2009
This same issue happened on my 2005 Tahoe. After changing the battery the driver side started blowing hot and the passenger side cold. Tried suggestion #39 and also used info from reply #71. IT WORKING SO FAR!! THANKS!
Reply #93 steve (68.5.8.153) - Mon Aug 3 22:19:45 2009
Just changed battery in 2004 Avalanche. With blower control on dashboard vents, air comes out of defroster vents for about 15 seconds, then air moves to floor vents for about 5 seconds, then to dashboard for another 5, and then back to defrost and stays there. Any ideas on how to fix/reset?
Reply #94 Dennis (24.61.121.255) - Mon Aug 3 22:36:42 2009
Years ago I stopped buying GM products because the paint on my 87 Monte Carlo peeled off and they wouldn't stand behind it so I traded it for a new maxima.I decide to buy an 03 silverado ss abd I have enjoyed the truck until this problem with the ac/ heater. If the new GM dosn't issue a recall and repair these vehicles I'm going back to Nissan for good.
Reply #95 Gary DeLord (216.80.141.83) - Mon Aug 3 22:40:03 2009
I have a 2005 Silverado 1/2 ton pickup, and my a/c just started switching from cold air to very hot air out of both the driver & passenger sides. The next day it's working great for a little while. Hopefully #39 or #77 will solve my problem. Also based on the above, I can expect my battery to die soon and the a/c problem to get progressively worse. GREAT!! Frustrating to see no solutions, or actions, from GM.... definitely explains their bankrupcy. My next vehicle WILL NOT be GM.....and I've never owned anything else for 40 years.
Reply #96 Zach (173.25.201.28) - Tue Aug 4 22:38:15 2009
My dads truck 2005 silverado he got a new battery and all this happened cold air passenger side and hot air driver side he made an appointment to get his truck in to replace the accuator so I decided to do some searching cause it just seemed to wierd that this would happen all from a battery change.. I read these steps up above and it fixed it instantly ... 1) Start truck 2) A/C comes out defrost - wait about 10 to 15 secs 3) A/C then starts coming out the floor vents for about 5 seconds 4) A/C then starts coming out the dash vents. 5) While the A/C is coming out the dash vents, turn A/C OFF (otherwise it cycles back to defrost for good). 6) Turn truck OFF Restart truck
Reply #97 Ray Mayo (204.116.244.107) - Wed Aug 5 11:07:16 2009
My 2005 chevy silverado blows cold air on the drivers side and hot air on the passenger side
Reply #98 mick varn (67.166.84.69) - Thu Aug 6 20:46:27 2009
This is sad that so many people (including me:03 Silverado) are having the exact same problem and GM will not step up.After this and being quoted $1200 for a fuel pump, it seems obvious why our once proud American companies have turned into a joke.I have two Chevys and every problem has been more expensive than the next.($650 multifunction switch(part only), $450 water pump(which I did myself for $40 with a lifetime warranty on the part)I may continue to stay with an American car but it will not be with a GM product.
Reply #99 Tony P (70.157.22.18) - Fri Aug 7 11:53:56 2009
05 Suburban. Replaced battery. Hot air on driver side and cold on passenger. Actually started happening before replacing battery. Do not have auto temp option so I did suggestion in #77. Took two times but it works. Thank the Lord. Very disappointed in this vehicle. Have had many anomalies like this.
Reply #100 Terry (208.60.60.254) - Sat Aug 8 00:07:57 2009
2006 Chevrolet Silverado 2500 Pickup; Dual AC blows cold air on passenger but hot on drivers side. It seems to happen randomly and it can be hot on both sides as well. As far a I can recall my battery has not been disconnected, but I did take the boat out and left the lights on for a good while, but it did not go completely dead. After this the problem got worse.I will try some of the fixes listed above. This is the first Chevrolet truck I've owned and its been in the shop more in the last three years, than my old Ford truck, that was 13yrs. old and had 300, 000 miles on it.
Reply #101 Carter (74.179.219.88) - Sun Aug 9 01:29:34 2009
2004 Avalanche Z71: Same hot(passenger)/ cold(driver) issue as described by others here after disconnecting negative battery ground to replace ABS Control Module that many of you will find is another cheap part GM buys and goes bad especially after putting it on the left driver side frame rail of all places so it can get exposed to all the elements. Toyota as most Japanese autos and trucks put it in the engine compartment. Anyway I digress. I did the #62 fix which is similar to #35 and #42(disconnected HVAC 10 amp fuse in Main Fuse Box in engine compartment and positive cable for a few minutes). I also believe responses #39 and #96 will also work depending on your situation. I do believe this will happen again and I plan to have a copy of these fixes in my glove box. Of course I have had the fluctuating speedometer problem and now have an intermediate steering column knock and possible control arm noise becomming problems. All on a 38000 mile truck. This is it for me and GM. I am going to Toyota Tundra for my next one - they are actually going up in value over the last 4 months.
Reply #102 Ray M (68.102.137.122) - Sun Aug 9 14:16:00 2009
Rely # 39 This works very well, you may have to try it several times however it will reset and solve the hic-up. My unit is an 04 Gmc 1500 with the auto A/C
Reply #103 Dan (68.59.96.135) - Sun Aug 9 23:25:29 2009
GM...come on now...My 04 Silverado loves blowing cold air/driver side and hot/passenger. Will try some of these suggestions. Next on my list of issues...My wife has an 04 Envoy and the airbag light will not turn off after the vehicle is started. it used to, but now remains lit the entire time...any ideas? Thanks to all who have posted their fixes. I can only imagine what's next. It surely will not be another GM product, that's for sure....
Reply #104 PT (69.148.168.188) - Mon Aug 10 08:58:02 2009
I tried #39 and it hasn't fixed it for good, but it does give me a lot more time. (A week instead of daily). I'll keep trying it.
Reply #105 gary hoskins (64.12.116.198) - Tue Aug 11 17:31:47 2009
i have a 1990 silverado. the air conditioning cools fine but drops water to ground when i shut motor off even when air hasen't been used. i also hear a swishing sound when driving like water being shaken around. would like any feedback on this and whatever the problem is could this water or whatever it is be causing my motor to hesitate, backfire in anyway. thank you very much.
Reply #106 rex (205.188.116.198) - Wed Aug 12 08:55:27 2009
2003 gmc pick-up serria 4- wheel drive a/c & heat fan wont blow air
Reply #107 shawn (99.194.101.159) - Wed Aug 12 17:44:46 2009
Don't know if this well help some of you, but I have an '04 chevy 2500hd with dual climate controls. The problem got worse as time went by, and then just recently it stopped blowing cold air at all, even when I restarted the truck. Couple of days ago it started working for me all of the sudden and did not turn to heat, well I noticed that I had unknowingly pressed the recurculation button and ever since I have had no problems with it blowing hot air. Not sure how long this will last for me, but it has been a week and still good. Hope this will help some of you that can't afford to pay for the over priced actuator, let alone the $80/hour labor costs.
Reply #108 Joe (75.70.143.245) - Thu Aug 13 02:20:03 2009
As you guessed I found this site after replacing my battery same problems above. I had a blower problem with my 2005 Tahoe when it was brand new with less than 1, 000 miles, no blower output. Several trips to the dealer and several poke and hopes by them replacing modules racking up the warranty work the problem persisted. The 2cnd dealer even replaced the fuse block base which lasted a little longer. After it went out the last time I reached my hand up under the dash to the back side of the diver's side fuse block. Gently massaged the wires on the backside of the heater fuse and the blower came back on. I cut a very small wood wedge and pushed that into the plastic block where the heater wire landed to tighten up the fit. 70, 000 miles no more problems. Cheaply made wiring harness connector.
Reply #109 david t (173.21.5.34) - Mon Aug 17 10:08:56 2009
Same problem Hot/cold AC.(03 Z71 5.3)Has happened 3 times in 6 weeks. I got the truck back from a shop after replacing brakes. I noticed the clock was wrong and figured they had disconnected the battery or ran it down somehow. Then with a day the Hot/cold AC problem showed up. It seems to fix after restarting the engine. If it happens again I will try #39.
Reply #110 JD (74.223.13.34) - Mon Aug 17 15:50:49 2009
WOW!! Can't believe all the same complaints here. 04 Sub 1500. Hot air out of driver, cold air everywhere else. No battery problems before this started. I have noticed when pulling a loaded trailer as I accelerate, the A/C works, when I brake, it would turn to heat. Sometimes turning it off resets it; sometimes not. I will try the popular #39 & see if that works. Good luck to all.
Reply #111 Bryan (71.145.186.161) - Tue Aug 18 17:21:19 2009
Replace the battery on my 2004 1500 Silverado. Had hot air out of driver side, cold air out of passenger. Tried suggestion in #39 and it fixed the problem! thanks so much! Awesome forum...
Reply #112 Terard (98.199.156.195) - Thu Aug 20 20:19:01 2009
I hate my Chevrolet Silverado. Yes I'm having the same problem. I want to drive it back to the Dealer and through their front window but cooler heads prevail. LOL. I'm going to try some of your solutions. Thanks!
Reply #113 Sandra (75.120.71.67) - Fri Aug 21 22:59:48 2009
Well here is another Z-71 that is blowing hot air out the passenger vents when the air is on. Driver side is cold. What will be the first steps to fix this?
Reply #114 Haim Glickman (216.203.6.12) - Mon Aug 24 09:38:36 2009
2004 Tahoe Z71, Same issue Dual AC blows Cold air on passenger but HOT on driver side. I'm going to try #39
Reply #115 Josh (69.29.88.143) - Wed Aug 26 11:36:00 2009
2004 Silver 100k miles. Same problem...all hot and full fan. I don't have auto climate so I'll try #77 and know that I will soon have to replace the battery. I hope the truck doesn't have a faulty harness (catch on fire).To stop the hot air from blowing turn your fan to zero and push the recirculation button and that will always shut off all air flow. As for Carter your steering shaft and instrument panel need to be replaced (recall on both)and my dealership replaced both for free even though my truck was beyond the mileage limit, with a little pushing (basically threatened to take my business elsewhere without saying as much).
Reply #116 Luke Jones (74.5.201.82) - Wed Aug 26 12:05:30 2009
Purchsed new 2005 Tahoe LT, 88K, loaded, Same issue as everyone else. Just got back from having a transmission replaced (thats another story), dual AC blows cold air on drivers side and hot I mean hot on passenger side. I am sure when the trans repair was done, battery was probably disconnected. It seams strange that most of the complaints are hot on drivers side and not on passanger. Goes to show you, GM really does not expext you to have to replace a battery in the vehicles lifetime or they wouldn't have designed the electronics to act the way they do. Maybe its time to get rid of it and move to a foreign made vehicle. I'm going to try #39 and see what happens
Reply #117 Jason (71.17.189.139) - Wed Aug 26 16:30:27 2009
What's with 05 GM trucks? Changed the battery and now the heat blows on the drivers side and the passengers side blows cold. I'll try one of the fixes posted. Shouldn't GM issue somekida recall on this issue. Any actual GM techs out there have something to say? Please keep me posted. I think we can all see why GM went bankrupt, they don't stand behind their product or their customer.
Reply #118 Brett (68.90.10.253) - Sat Aug 29 15:03:42 2009
Thank you Tom E. #39. That was a great fix for my 2005 Suburban when all the fuse pulling and battery disconnecting had failed.
Reply #119 Adam (166.137.6.53) - Sun Aug 30 08:54:21 2009
#39 sounds great and all but I don't have the digital temperture controller and I have no auto mode. Which fix would be the best for me.
Reply #120 Michael (99.7.39.53) - Sun Aug 30 21:59:25 2009
I have a 2005 Chevy Silverado Z-71 that is having the same issues as everyone else. Instead of deal with the dealerships I tried to figure it out on my own. after a few hours on here and playing around with different options I found a solution that worked for me. The driver side was cold and the passenger side was hot. I pulled the HVAC1 and HTR/AC fuses located inside the truck. then disconnected the Neg and Pos battery cables in that order. I left it for a few minutes then connected the Pos and Neg Battery cables and installed the same fuses. When i started it back up I got just the defrost working(ran into this before) I turned the ac off and then turned the truck off. Turned it back on and then turned the ac back on and it seems to be working fine. We will see for how long. Hope this helps someone else as well. I will be looking for a recall but i doubt it will happen!!
Reply #121 mb (76.95.201.39) - Mon Aug 31 11:24:37 2009
As I was coming home from a trip in my 2003 Tahoe, the air went blazing hot on the driver side and remained somewhat cold on the passenger side (dual climate controls) This of course happened while driving in traffic in Los Angeles last week with the scorching heat 90-100 degrees. The air coming out of the driver side was so hot it almost burned, but the cars engine temp was just fine. Called two dealers who claimed to know nothing of the problem, they wanted me to bring the Tahoe in to have it checked out, this would start at $100.00 for the examination and would increase depending on what they deemed was the issue. Also called a small a/c shop who claimed to know nothing of the issue, they claimed it would be $120-800 dollars to fix. Thanks to Tom E #39 things seem to be working.. now only if I found that fix on my iphone through LA LOL! I did have my battery die two months ago, so perhaps something goes a little mad when the battery is disconnected?
Reply #122 Matt (24.129.96.15) - Sat Sep 5 16:44:22 2009
Anyone have a problem with the Silverado when it rains or you drive through water? The compressor turns off until the truck seems to dry out. Each time I hit the "snowflake", it blinks three times and stays off.
Reply #123 jason (72.253.129.54) - Sat Sep 5 17:08:42 2009
my 2001 chevy silverado blows warm air after running for 30 mins, I recently had it filled with freon. Why does it do this everyday? Cold when i start the truck, then warm 30 mins later?
Reply #124 Joe (173.58.77.64) - Sat Sep 5 17:22:47 2009
My 03 Silverado 1500 recently started this problem. It blows the ac compressor fuse. I replace it and after a few minutes it blows it again. I took it to a mom and pop place and they couldnt find anything wrong with it (the truck would not blow the fuse). Later that evening, the truck blew the fuse. I was told that if it continued it would probably the entire a/c system that would need to be replaced for about $800 anyone have any solutiong. They checked it for a short and found none.
Reply #125 Scott (24.117.12.188) - Sun Sep 6 21:27:30 2009
#39 fixed it!!....Thanks Tom
Reply #126 mb (76.95.201.39) - Mon Sep 7 13:01:21 2009
Update from my last post #121 My battery died on Friday, it was an AC delco from the dealer, about 3 years old. I got a jump from AAA and went right to my trusted local mechanic, he told me he had a lot of problems with AC delco, and would only use interstate batteries. He installed the interstate, later while driving on the freeway, the a/c seemed to work better and was even colder than before on a 40 minute drive... no problems. However, on the way home after 15 minutes I felt the heat begin to come through the drivers vent... I immediately turned the ac on auto, cranked the drivers side to max heat and the passenger side to its lowest setting, waited about a minute then did the opposite: driver low, passenger high, no restarts... A kind of Tom E post #39 on the fly, ... the air went back down to cold and has worked fine since... very strange indeed.
Reply #127 TonyInVegas (65.160.210.27) - Tue Sep 8 23:23:57 2009
2003 Silverado 1500 LS, 58K mils. I'm having the same issue as most of you. Driver/Cold Passenger/Hot (the wife hates it hehe). I tried post #77 and got the driver side to go hot as well. Then I do the same procedures with opposite starting positions and can get the driver to go back to cold, but still can't get the passenger to go cold. Not sure if that means I have a true electrical issue or not. I will try disconnecting the battery and see if that helps. will update soon
Reply #128 Bradley in Wichita (70.182.248.193) - Wed Sep 9 17:23:50 2009
I have 2004 Silverado 2500 HD. 6.6 diesel. Changed both batteries , driver side hot and passenger cold. My dad was a Chevy man, I was a Chevy man. I had a 94 Chevy 2500 with 220 thousand miles on it. I pulled a 28' 5th wheel. Had tranny rebuilt at 150. That was all the problems i had. This 2004 has been in the shop at least 2 times a year for computer related problems. I'm going to FORD!! Only because Dodge (which i would bye before a Ford) Along with Chevy are now owned by the government.
Reply #129 Dwade (98.20.14.239) - Fri Sep 11 10:26:14 2009
I have a 2007 chey 2500 the driver side contol will only blow cold air the passenger works fine. It has 91, 000 miles any suggestion?
Reply #130 Fran (97.125.164.212) - Sun Sep 13 12:05:29 2009
Reply 39 worked for me as well.I don't believe this has anything to do with an actuator arm, low freon or anything else (at least in my case). My '05 Suburban did this intermittently before but I recently changed the battery and then it was stuck in hot mode for the passenger. The battery issues I was having before was that the battery would just die, enough that I had to reset the clock. That may have been why I was having the intermittent issues. I agree it loses it's reference point and it needs to be reset. We will see if it continues to work but after a long drive yesterday with half the front of the truck being scorching hot and the other half freezing it can't be any worse..... Try reply 39 several times before taking to a dealer or doing anything else. It is quick and free. I did not have to start the truck until I was done (just turned the ignition off), but I think you could with the same results.
Reply #131 Bill McCampbell (74.193.223.186) - Tue Sep 15 11:41:13 2009
the blower on my 2006 silerado is not blowing. i recently replaced the battery. any ideas if that may have messed up the ac blower. any suggesion on what to do. thanks hot in louisiana bill
Reply #132 mike (70.234.51.126) - Thu Sep 24 11:12:25 2009
The Cause: The Blower Motor wiring harness is defective, it shorts and that frys the "relay/resistor". I've spent the money and replaced the wiring harnes with Genuine GM Part, new harness, new resistor/relay, worked for maybe 10 seconds and wham... fried harness fried resistor/relay -the first 4 speeds of the blower motor will work, but not the 5th, this is how you know this is the problem, if you have automatic speed, this is the problem. This was given to me by a GM Tech who felt guilty because of the fraud being perpatrated agains the GM owners, this is not limited to GM Trucks, it's cars, vans all of them. He advised they were doing about 3-5 cars and trucks aday, replacing the harness's and resistor/relay moduals at $300 - $500 a pop, depended on your face. So lots of luck folks, we're screwed - it would be a fleetwide recall of every vehicle after 2003 - 2009. GM just don't have the money and while vendors and shops are making an easy $400 bucks for a temporary fix they wont complain.
Reply #133 weldon (32.176.253.84) - Sat Sep 26 10:24:31 2009
on the air changing from hot to cold when it wants to try with key on turn off a/c wait and key off wait 5 min then turn key on and turn a/c on by auto button only leave on 15 min . turn key off then restart this fixed mine was told my service who had to replace the actuator. I have had a problem for two years and this has fixed it each time saved the $550.00 to replace it
Reply #134 jag (72.178.19.175) - Sat Sep 26 16:50:16 2009
just replaced factory battery after 4.5 yrs with chevy 1500 silverado and have had zero problems, now my ac only blows out of the defrost vents. have tried disconnect and reconnect with no success. any suggestions?
Reply #135 Fred Smith (96.243.165.56) - Sun Sep 27 23:37:22 2009
2005 silverado extended cab. Having same trouble with a/c that everyone else is having. Drivers side blows HOT and passenger side blows COLD. this has been going on for months. turn off ignition it goes back to blowing cold, now that doesn't even work anymore. My blower motor only works on # 1, 2, 3. #4 and 5 stopped working months ago, also my lights in the a/c control panel quit working a couple weeks ago. Getting fed up!!!!
Reply #136 Dennis (71.203.105.150) - Mon Sep 28 15:15:54 2009
04 Silverado 1500 Z71 Extended CabSame issue Driver side is extremely hot, passenger side is blowing ice cubes. Started on a long trip back to Florida from Michigan, we turned left after highway travel and that was it, can not get it to blow cold on the driver side at all. I will check the wiring harness and all to make sure nothing is burning up.... GM needs to really set a recall..
Reply #137 Jeffrey (71.58.176.180) - Wed Oct 7 12:35:43 2009
I have a 2006 Silverado 1500 pick up truck. On Dec. 31st 2008 the truck was parked and when I came out to get in the truck the windows were black. I opened the door and the driver side had caught fire. I did reserch and found a friend had a 2004 Silverado and there was a recall on the gages. If not fixed could cause fire, found another person and his burned to the ground. I took the truck home, it was driveable and the gages were going crazy. This was before I found out about the recall. GM denied my claim, said there was no problem with that year. Our insurance company fixed the fire damaged, said they would not fix the gages but the shop that did the work fixed them anyway, so I thought. The truck has been fixed for several months and now the gages are going crazy again. Can anyone tell me if they have had the same problem with this year truck>
Reply #138 Mike (99.20.113.53) - Wed Oct 7 14:25:51 2009
2005 Chevy 1500I cannot adjust the speed control for my AC and Heat. It even continued to blow at full speed when I turned off the engine and removed the key from the ignition. I was finally able to get it turned off and lowered the speed to low, but now I still can't adjust the fan speed. The heater and AC still work as I can feel that air seeping out, but I just can't change the fan speed. I have been told it could be the HVAC Resistor. Is this true, or are their other quick fixes? I have checked the wiring and have not noticed them to be melted. I have already received a quote of over $400 to replace the HVAC Resistor, but I am looking to trade this vehicle in, so I don't want to pay that if I don't have to. Any advice would be great.
Reply #139 daniel (98.77.88.227) - Thu Oct 8 21:26:09 2009
2007 Chevy Silverado Classic , a/c blowing warm on drivers side cold on passenger side, they fixed it at the Chevy dealership 8 months ago. today a/c stopped working completely for 15 mins. then started blowing full blast ice cold electric fire smelling air. 35, 000 miles on a truck shouldn’t have this much trouble .Chevy a/c is no good, Chevy speedometer and gauges are no good, and the speakers in the front door panels are no good.
Reply #140 soon to be x chevy man (205.188.116.198) - Sun Oct 18 21:09:18 2009
im having the same issue alot of other are but i have changed the acuator, the heater a/c controls in the dash and still on they heat will work on the driver side. it never changes NO MATTER WHAT I DO, none of the "fixes" on here helps me at all. i hear there are some wiring harness issues, does anyone have pics of the issue?..or where do i look for the problem?..any other repairs out there?..does any picture exist of the problem?? I refuse to pay gm to fix it!..i paid enough for the truck and it seems to be a big issue and a recall should be in order..my next truck will not be a gm and i hope and pray that someone in gm's office reads every complant on this site!
Reply #141 Wes Scales (65.119.225.228) - Mon Oct 19 19:59:17 2009
2004 Suburban - dual climate control - blowing cold air all the time on driver side. Passenger side seems to be working fine. We have heard at times a clicking noise coming from the dash like a damper trying to switch positions. It does appear to be a damper problem in which the heat cannot be routed properly. Any help would be appreciated!!
Reply #142 jeff (216.68.121.170) - Fri Oct 23 12:25:37 2009
joining the crowd 06 silverado cold drivers side hot passenger repaired three times first time control head 2nd and 3rd blend door modules back to it again for forth time october 2009. any suggestions, advocacy groups, lawsuit ect to join in on.? truck just out of warranty but gm says keep fixing till resolved but patients runing thin
Reply #143 Nils (76.108.125.225) - Sat Oct 31 12:35:32 2009
Ok after trying just about everything including disconnecting the battery, i found this worked. Start engine, shut it off, press the gas pedal 5 times, wait 2 seconds and press the pedal again 5 times. This will reset the computer. After performing this on my truck, the AC is now normal. Removing the battery cables or even shorting them together off the battery does not reset the computer. I was told to just turn the ignition to on then off the press the pedal 5 times, but it just did not work for me that way.
Reply #144 Nils (76.108.125.225) - Sat Oct 31 13:19:52 2009
The front Servo Motor and the Transfer case Encoder Motor are both poor designed parts, and therefor are prone to failure. They claim after market Motors are better quality. My Sierra 4 wheel drive controls were acting crazy after the car wash where it sprays water up under the truck. I remember when the truck was new i had the same problem and had it out with the worthless service advisors when they told me it was due to the car wash, the car wash ? this is a 4 wheel drive truck for off road, mud etc i demanded! what kind of 4 wheel drive is this ?. Anyway, water gets into the connectors and motors since the sealing design sucks for both the connectors and the motors. My latest problem was the 4 wheel drive control would change by itself from 2 wheel drive to 4 wheel or Auto 4 wheel by itself, and then if you press 4 wheel drive it would just blink for a while and go back to where it was. After troubleshooting with meter and diagrams i found a open circuit between the Red and Black wire on the Transfer case Encoder Motor. The Red and Black is the power wires to the Motor that moves the gears. Checking with a Ohm meter it should read 12.1 Ohms or close to it, and the Orange and Tan wire to the Encoder should read 21.8 or close to it. This is reading from the connector at the Encoder Motor assy itself, connector disconnected. Mine was Zero ohms. Replacing the Encoder Motor fixed it. I am not sure what the front servo reads but maybe someone on here knows. You should check all fuses for 4 wheel drive, Ohm motors, and check all connectors for moisture, water etc. Always fill connectors with clear silicone lubricant before re-assembly. Good luck
Reply #145 someone (205.188.116.198) - Tue Nov 3 23:06:08 2009
Nils, what does your 4wheel drive issues have to do with this heater/ac forum
Reply #146 Rob (68.35.197.223) - Thu Nov 5 22:54:20 2009
Tried Post #39s suggestion it worked great thanks a bunch Tom E. I will post again if it happens again but for now, I have air when I want it and heat when I want it. Thanks a bunch your life/money saver.
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