Problem with Heat and AC

[r33pwrd]

Well im new to the forum just picked up a nice 07 Yukon Denali a few months back after selling my G8.

So for the first month no problems but I now am noticing that the AC or heat is not working properly. When I turn the Air on it sounds like it is blowing out under the passanger airbag area?? (not much of anything from the vents) if I cycle the hvac (turn on and off) it will correct itself most of the time.

The only thing I have done to the truck so far is a GMX322 and im not sure if this might be screwing with the Can system or if the problem is not related?? (the problem started a few days after the GMX install)

Anyone else has this issue? I do not see any TSB's on it

Thanks

 

[r33pwrd]

TTT no one has had this issue? Could it be the GMX322 doing this?

 

[zach2011]

Hm. Take out your GMX322 and see if the problem persists.

 

[r33pwrd]

Hm. Take out your GMX322 and see if the problem persists.

I will try that... pain in the ass as between my GMX322, bluettoth and video cables its kinda a pain to get to and the problem is intermitend (sp?) it can go for days without the problem and that have it for a day or two.