QuestionMy Yukon was fine when I left for vacation. A week later, I get back and the truck wont start. I jumped it off and it started up fine, but then I noticed two things.
First, the drivers side mirror was blue, like there were brights on behind me, but it was daylight, and I was in my driveway. Second, the A/C in the front wouldnt come on. The controls wont come on at all. But... the rear controls, all knobs and not digital, seem to work, at least the fan blows and I can control it's speed and all. It isnt blowing cold though. The mirror corrected itself after restarting the truck a couple of times, but that hasnt fixed the A/C.
I checked all the fuses I could find in both the panel in the truck on the drivers side, and the panel under the hood. There were at least 5 or 6 of them, and they were all good (marked HVAC, HTR, A/C, etc.). I also checked the A/C Comp relay I found under the hood, swapped it with the headlight relay, and the A/C still wont work but the headlights continued to work fine.
I havent found any other problems at all, every thing else electrical seems to work fine. Am I missing a fuse? There were some really wierd names and abbreviations on some of them. I am headed out to go get a multimeter so I can test the fuses a little easier. If anything changes or I find the problem I will update you, but I doubt I will, and I appreciate all of your help.
Thanks in advance.
AnswerYou could try removing your low pressure cycling switch and reinstalling it. If that switch is stuck removing it will reset it, and if that is the problem you really should replace it.
By the way, the switch is located on the drier near the firewall on the passenger side.
