A/C Question

[TGCOFTN]

On my 2007 H2.......after it sits overnight, and I start it up the next morning, and turn the A/C on, it has like a mildew,musky smell that comes out of the vents. I normally have to start it up and let the windows down and let it run for about 10 minutes with the A/C on high to get the smell out.

I took it to my local Hummer dealer last week, and they claimed the vent tube was stopped up. I get it back 2 days later and the smell is still VERY STRONG. It has not helped any at all. My dealer asked if I park it in the garage? I told them yes, it stays in the garage full time and only gets driven on sunny days. They said thats why........when I am running the A/C and park it inside the garage, going from hot to cool is making it do that.

Personally, I dont buy that, and I am gonna take it back up there. I have another H2 (2008) and it stays in the garage also, and it dont stink like mildew. I have a Volvo S80 which stays in the garage and it dont smell like that either..........does anyone know what this could be so that I can tell my dealer? Due to the economy the dealer has actually laid off and cut back some of there good people and now its people up there thats not getting the jobs done right.

Any suggestions, ideas, recomendations, advice would be GREAT APPREICATED!!! Thanks in Advance!!!!