Todd (207.67.86.128) - Tue Aug 26 08:02:44 2008

I have a 2004 chevy 2500hd that had the battery go dead. After getting the battery jumped my airconditioning only blows hot air. I have started and stopped the vehicle multiple times , checked all the fuses and all other gauges appear to be working with no problems. I have driven the vehicle two days with no other problems. Any ideas what could have happened when the battery went dead.

Reply #1 wes goodrich (65.11.22.215) - Sun Sep 28 11:00:24 2008

My mother-in-laws is doing the same thing, but only one side is blowing hot. The backlights on the A/C control, passanger side air bag and headlght cotrol knob stay lit and drain the battery. I think something in the control unit is shorting. I plled the A/C unit and am waiting for dark to see if all the lights go out. I found a place that sells the control for half of GMC/chevy. If you have figured anything out please email me. Thanks Wes

Reply #2 shorty strother (64.12.117.68) - Tue Oct 14 22:58:29 2008

how would i go about getting all the General motors recalls pertaining to a 2004 chevy silverado 2500HD diesel truck

Reply #3 Dar (71.54.34.188) - Mon Nov 10 20:16:35 2008

My battery went dead ...jump started and every thing was working, had the battery replaced, and now the AC blows hot air. Any clues? All fuses check good.

Reply #4 Chad (68.112.188.82) - Tue Nov 11 22:41:12 2008

Has anyone had any issues with 2004 Chevy Silverado 2500 HD Diesel truck & the injectors going? I think this truck has been a lemon since we purchased it nothing but problems or the mechanics at the dealership have no idea what they are doing.

Very frustrated!!!

Reply #5 graphics (24.3.111.236) - Sun Nov 23 08:57:11 2008

my oem battery went bad got a new one ..i am getting about a 12volt drain with everything off this kills the battery every night ..does anyone know where this drain is comming from ..

Reply #6 jacob (216.217.169.2) - Thu Apr 9 11:33:34 2009

ok all of your guys problems are simple! and can be simple. for the ones that the battery is drainin for no reason...you will have that with a big truck. they use alot of power....

then the whole air thing...that would have to be hooked to a computed at a dealership or autozone or something and they can tell u wats wrong for sure..im guessing a vacum tube or connections between the alternator and the engine...

Reply #7 brian (137.240.136.80) - Mon Apr 27 10:20:54 2009

the computer has to reset you have to have secondary power when pulling the battery

Reply #8 daniel culkin (24.39.246.206) - Mon Jun 29 06:43:55 2009

i have a 2004 chevy diesel: it started and then shut off within 30sec. all it would do after that was turn over. next i tried: held diesel pedal down pumped brakes three times let off on all pedals started truck. all d.i.c. reset and truck runs good. anybody else have this problem ?

Reply #9 jr taylor (69.144.128.208) - Mon Jul 6 12:22:18 2009

I have a 2005 1500HD with a 6.0 in it. The air-conditioning will not work sometimes. If i stop the truck turn it off and then back on the a/c will start working. Sometimes if i have it working it will stop working after a while. I have tried to have it recharged, and replaced the switch. Any other ideas? This happens both in town and on the interstate.

Thanks

Reply #10 Bernard Enger (24.138.55.107) - Thu Jul 30 09:28:11 2009

After a battery failure I re-sarted the truck and after 10 to 15 second the ac is blowing hot air at full speed? I try to disconnect the battery for about 20 minute to see if the control would reset but no luck. I cannot get service for few day our dealer is now out of business do you have any suggestions?

Thank's

Bernard

Reply #11 Keith Talley (171.161.160.10) - Mon Aug 3 06:35:26 2009

Please help I have a 2005 Chevy Diesel 2500 when I turn the air on it's blowing cold but after a few minurtes it has started blowing hot air. I can turn the truck off and restart it and its fine. Does anyone know what the problem is?????????????

Reply #12 matt (72.77.254.204) - Wed Aug 5 23:37:23 2009

I have a 2004 chevy 2500 hd with a 6.6. I just changed the alternator yesterday and know my a/c only blows on the defrost. I have turned the unit off for 10 min but it still does it. Any idea???

Reply #13 R POND (208.133.5.68) - Wed Aug 12 23:07:18 2009

I HAVE A 2004 CHEVY SILVERADO WITH DUEL TEMPURATURE CONTOLS AND SOMETIME WHEN I'M DRIVING DOWN THE ROAD MY DRIVER SIDE AIR STARTS BLOWING OUT HOT AIR, I CAN STOP THE TRUCK AND SHUT IT OFF AND RESTART IT AND IT WILL BE FINE FOR AWHILE, I'VE HAD IT PUT ON A COMPUTER AND IT DIDN'T SHOW ANYTHING, I'VE FOUND NO PATTERNS TO WHAT MIGHT BE CAUSING IT TO START BLOWING HOT, IF ANY ONE HAS ANY IDEAS AS TO WHAT IT COULD BE, PLEASE LET ME KNOW.

Reply #14 Cheri (98.242.3.199) - Thu Aug 27 22:30:41 2009

I too have the problem with my 2004 chevy tahoe blowing hot air when the ac should blow cold air. I've done some research and the good news is it can be fixed. It is a good new is the actuator needs to be replaced and will fix the problem The bad news it is over a grand. Not sure what I'm going to do but I live in a very hot city and the ac is a must while I taxiy two year old around all day.

Reply #15 Janis Whitehead (199.67.138.43) - Tue Sep 8 15:41:05 2009

I have a 2004 chevy 2500hd. I had to replace the battery yesterday and the AC is now blowing hot air. Has anyone had a similiar problem? The fuse is fine and I unplugged and replugged the battery... still no luck. It was working fine before the new battery. Any help anyone can offer would be great.. I am in Texas and it's hot here :(

Reply #16 David (132.79.11.15) - Mon Sep 28 12:07:07 2009

I am having similar issues with my 2004 Chevy Silverado 2500HD. First the radio volume went out. The radio was on, I could change the channel, but no noise came out. Then the driver side vents started blowing hot air while driving. Then the radio stopped turning off when I turn off the vehicle and open the door. I took it to the dealership. I was told the radio issue was either the sensor in the door latch or the radio. It could not be determined which. The AC issue was the left front door actuator in the blower was stripped out. It would periodically rotate to heat if I hit a bump and restarting the engine (comp) would reset it. It sounds like this is a defect issue with this era vehicle.

Reply #17 M. (65.10.135.192) - Thu Oct 1 07:00:50 2009

I HAVE A 2004 CHEVY SILVERADO 2500 HD DIESEL WITH DUEL TEMPURATURE CONTOLS AND SOMETIME WHEN I'M DRIVING DOWN THE ROAD MY DRIVER SIDE AIR STARTS BLOWING OUT HOT AIR, I CAN STOP THE TRUCK AND SHUT IT OFF AND RESTART IT AND IT WILL BE FINE FOR AWHILE, I'VE HAD IT PUT ON A COMPUTER AND IT DIDN'T SHOW ANYTHING, I'VE FOUND NO PATTERNS TO WHAT MIGHT BE CAUSING IT TO START BLOWING HOT, IF ANY ONE HAS ANY IDEAS AS TO WHAT IT COULD BE, PLEASE LET ME KNOW too.

Reply #18 Al (75.251.211.112) - Fri Oct 9 15:34:53 2009

I had A/C problems of the same sort. Blows hot sometimes and cold sometimes. I would shut off engine and restart and A/C would work. The problem was some relays under and behind the dash.

There are 4 of them and they have to be replaced at a dealership. I had one replaced and it worked for a while then quit again. I had 3 replaced and it works fine now. My extended warranty covered all but the deductible. Had about 75 to 80k on it.

Reply #19 brian sheley (173.65.129.216) - Tue Oct 13 08:19:20 2009

sometimes air blows out hot on one side

Reply #20 Art (75.62.70.100) - Fri Oct 23 09:52:27 2009

I have a 2004 HD Diesel and am having a problem w/ a greyish/white smoke out of the exhaust. Doesn't do it while its cold but once the engine warms up it gets extremely unbearalbe. Trying to get problem fixed. I bought the truck new and never had a problem w/ it til about 3 months ago. The dealer ship tells me theres nothing the can do for it. Anyone else having this issue.

Reply #21 Dave (70.116.88.58) - Sat Oct 31 11:17:15 2009

I have the same problem with one side of ac running hot. This happened before when I had bought a new battery. After I replaced it the ac started running hot. But my sister's boyfriend did some funny trick to get it working again. He placed his hand over the (ac intake?) underneath the passenger side for about a minute and then moved both knobs on the ac (both right and left knobs) up and down several times (fast) and all of a sudden it started working! Can't get a hold him. I can't get it to do it again. Anyone else ever heard of this?

thanks

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