I have a 2004 Chevy Colorado and the AC only worked on the high setting no other settings today it stopped working on high as well will not work at all what could be the problem?

Answer 1

My wife's truck had the same problem with the AC only staying on when set on high. She found that she could kick under the glove box and the other setting would work. She brought her truck in under warranty and they just told her that it was a loose wire. I'm not sure what they did but it worked for a month or two and then went back to not working. Many months later...I inspected under the glove box and found that one of the pins on the connector connecting to the Delphi AC unit's harness was burned almost all the way through and was only making intermittent contact. As soon as I forced the wires to touch the ac worked but the wires got red hot and burned my hands. I found that if I just disconnect that part of the harness the "high" setting will still work but not the others. The truck is now out of warranty and we are leaving the harness unplugged so as not to cause any more failures in her electrical system due to the short or whatever it is. In short, our problem has something to do with a short or something that burned up our harness and it is now only making intermittent contact. I'm not sure if you have the same defect cause as us but it wouldn't hurt for you to check.

I have a 2005 Chevy Colorado and I have had the same problem. Chevy has had problems with the original wire harness and now offer a new one that corrects the problem. I had to replace the blower, harness, and the blower resistor connection which cost just under 400.00 installed. From everyone I have talked to this has been a pretty big hassle for all Colorado owners and Chevy has never mentioned a recall. I don't think I will be buying another Chevy anytime soon.