Yesterday morning I got in my car and AC worked fine. In the afternoon got in my car and AC wouldnt blow any air at all. Has anyone else ever had this problem?

 

Yes, I had the same exact problem. I took it into the dealer and they said there was a wire behind the radio that was slightly pinched. Also check your fuses. This happened to me twice. One day it would work perfectly, then the next it just wouldn't come on. Then it would come on again, and then stop again. I thought it was something major, but in the end was simple fix. Good luck...

 

Sounds the same as a lot of us on here has had.
The wir harness behind the glove box melts on one end and your blower fan stops working.
It's an easy fix and at the same time quite an alarming problem. They should have had a recall on it in my opinion.
The thread is here https://www.hummerforums.com/forum/s...ad.php?t=19208 with pictures.
Good luck !

 

Great advice from UKpaul. But definitely check your fuses first.

 

I'm having the same problem. I checked everything and removed the glove box. When I turn the dial from 3-4 on the level a click comes from the ac compartment. Don't know what it might be or how to get into it. Any help is greatly appreciated.

Thanks,

 

Check the red connector directly behind your glovebox. Its a very common problem and an easy fix. As stated before...there is a thread that covers this.

https://www.hummerforums.com/forum/showthread.php?t=19208