Normandy Posted August 31, 2014 Report Share Posted August 31, 2014 Hey guys. I installed my new PCM last night and today only my drivers side a/c worked. I tried finding something on it. One of the truck sites recommended pulling the HVAC fuse for 30 or so seconds. After I did that now I have no a/c, just hot hot air. Please help! Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 1, 2014 Report Share Posted September 1, 2014 Could be your blend door actuator Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 1, 2014 Author Report Share Posted September 1, 2014 (edited) Could be your blend door actuator Do they suddenly just go out? I at least has drivers a/c before I pulled the hvac fuse. My a/c has been awesome since I bought the truck. There hasn't been any signs of it going out (hot and cold air randomly from what I've read). How do I fix this? Edited September 1, 2014 by Normandy (see edit history) Quote Link to comment Share on other sites More sharing options...
Thickcajun Posted September 1, 2014 Report Share Posted September 1, 2014 Adjust your slides and listen for a clicking noise behind the dash. Mine did the same thing about 4 months ago... I refuse to move them now. I hear changing them is a pita. Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 1, 2014 Report Share Posted September 1, 2014 Ya my passanger side went out one day and was stuck blowing hot air full blast. That's the one that takes some time to get to, but it's doable. There's a good write up somewhere on line that I followed and it worked perfect. I'll try and find the post and get the link up Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 1, 2014 Author Report Share Posted September 1, 2014 Adjust your slides and listen for a clicking noise behind the dash. Mine did the same thing about 4 months ago... I refuse to move them now. I hear changing them is a pita. Slides? Mine has the 2 round knobs for each side. I've never heard them make any noise. I've completely disconnected the battery. I'll let it set for an hour or so then I'll try the actuators calibration. Ya my passanger side went out one day and was stuck blowing hot air full blast. That's the one that takes some time to get to, but it's doable. There's a good write up somewhere on line that I followed and it worked perfect. I'll try and find the post and get the link up Awesome, I really appreciate it. Ive been looking all over for some concrete evidence on a fix for this. Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 1, 2014 Author Report Share Posted September 1, 2014 Well, I just tried the actuators calibration and I got it to blow cold air for about 8 seconds and then it went back to hot again. Thoughts? Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 1, 2014 Author Report Share Posted September 1, 2014 Well, I tried this: Start engine, turn off climate system. Stop engine. Turn key on, but do not start. Leave for 10 seconds. Turn off and pull key out of ignition. Leave out for 30 seconds. Restart engine, turn on air conditioning. Now I have no air blowing whatsoever. What the hell man.. Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 1, 2014 Report Share Posted September 1, 2014 Here are a couple links with detailed pics and instructions on how to change out 2 of the 3 blend door actuators http://www.sparkys-answers.com/2011/02/2003-chevrolet-silverado-changing-mode.html (this is on the driver side of the center console if the a/c is stuck blowing in one position i.e defrost only) http://www.sparkys-answers.com/2011/03/2004-chevrolet-silverado-dash-cover.html (this is if the passenger side is blowing out hot air) If the driver side is only blowing hot air this actuator is on the passenger side under that black cover under the glove compartment. Hope this helps. Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 1, 2014 Author Report Share Posted September 1, 2014 (edited) Here are a couple links with detailed pics and instructions on how to change out 2 of the 3 blend door actuators http://www.sparkys-answers.com/2011/02/2003-chevrolet-silverado-changing-mode.html (this is on the driver side of the center console if the a/c is stuck blowing in one position i.e defrost only) http://www.sparkys-answers.com/2011/03/2004-chevrolet-silverado-dash-cover.html (this is if the passenger side is blowing out hot air) If the driver side is only blowing hot air this actuator is on the passenger side under that black cover under the glove compartment. Hope this helps. I appreciate it a lot thank you. Did you read my last post? Now I cannot get any air to blow from anywhere. . I also hooked up my code scanner and there are no codes. Edited September 1, 2014 by Normandy (see edit history) Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 2, 2014 Report Share Posted September 2, 2014 damn that sucks. it doesn't blow through the defroster or anything? or the feet only? Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 2, 2014 Author Report Share Posted September 2, 2014 damn that sucks. it doesn't blow through the defroster or anything? or the feet only? No, right after I performed that procedure it stopped altogether. The compressor still kicks on but thats all right now. I'm at a complete loss here.. Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 2, 2014 Report Share Posted September 2, 2014 No, right after I performed that procedure it stopped altogether. The compressor still kicks on but thats all right now. I'm at a complete loss here.. hmm... only other thing that I had happen to my a/c was it would only turn on when it was on max. I replaced the blower motor resistor. Like a 20 dollar part. Here's a link to replace that Quote Link to comment Share on other sites More sharing options...
Normandy Posted September 2, 2014 Author Report Share Posted September 2, 2014 hmm... only other thing that I had happen to my a/c was it would only turn on when it was on max. I replaced the blower motor resistor. Like a 20 dollar part. Here's a link to replace that Thank you very much, I'll take a look at it when I get off work. Quote Link to comment Share on other sites More sharing options...
la122685 Posted September 2, 2014 Report Share Posted September 2, 2014 No prob. When I pulled mine u could see the traces on the card were burnt Quote Link to comment Share on other sites More sharing options...
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