HVAC smell

Anyone notice a moldy smell coming out of the vents after running the AC for a whiel, letting the truck sit and then restarting it? Know how to fix it? Phew!
(I have an '03 Envoy SLT)

Yes - I've experienced the same in my Envoy and in a Chrysler 300M that has automatic climate control. I saw an episode of 2 Guys Garage a few weeks ago where they highlighted a product to take care of that; some kind of foam that you spray into a canister. That's about all I can tell you. Haven't tried it yet.

Found it: http://www.lubegard.com/automotive/radiator_foam.html

Try tuning off the A/C and letting the fan run for a few minuets at the end of the day to dry out the coils.

Anyone notice a moldy smell coming out of the vents after running the AC for a whiel, letting the truck sit and then restarting it? Know how to fix it? Phew!
(I have an '03 Envoy SLT)
The truck may have a cabin filter that may be changed out. My 02 Impala had that smelled due to the cabin filter needing to be changed out.

mine had this smell but it went away on it's own.