AC/Heater Issue. Please Help
#1
AC/Heater Issue. Please Help
Hello guys. It finally started getting cold enough in South Texas to were the heater is needed. I tried moving the Temp adjustment **** only to find out that my Hummer goes from really cold to really hot with the slightest movement of the ****. Has anyone experienced this before? Is it a **** issue? AC/Heater issue? Please help
BTW the Hummer is a 2007 Adv pkg with 43,xxx miles if it helps
Thanks in advanced for your replies
BTW the Hummer is a 2007 Adv pkg with 43,xxx miles if it helps
Thanks in advanced for your replies
#2
Hello guys. It finally started getting cold enough in South Texas to were the heater is needed. I tried moving the Temp adjustment **** only to find out that my Hummer goes from really cold to really hot with the slightest movement of the ****. Has anyone experienced this before? Is it a **** issue? AC/Heater issue? Please help
BTW the Hummer is a 2007 Adv pkg with 43,xxx miles if it helps
Thanks in advanced for your replies
BTW the Hummer is a 2007 Adv pkg with 43,xxx miles if it helps
Thanks in advanced for your replies
There are others including myself who have experienced this issue as well. Here is one thread about this problem, i know there are others you might want to search for. https://www.hummerforums.com/forum/h...t=hvac+control
In my case the temperature problem didnt appear until i ran the "temp control calibration" sequence with hopes of fixing a different a/c problem. The calibration process seemed to cycle through some modes with ***** flashing like it actually calibrated something. all it did was give me boiling heat when the **** was only 1 click to the right. I refused to believe i broke anything though just by pressing a few buttons and i wasn't going to take it to a dealership for them to rip me off so i let it be since it was the summer anyway. Well to make a long story short after a few months of maybe turning the ***** here and there it works perfectly again. Good luck with yours.
#3
Same problem with mine. Took it to the dealership they replaced the control module under warranty...
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