We've noticed recently that the interior of our 2001 Chevy Tahoe has been smelling pretty musty. We cleaned all the carpets, but to no avail. I was then reminded that the last time this smell appeared, it was time to change the air filter that protects the HVAC system in the cabin. It's a pretty simple job, and one that should be identical on all 1999-2006 GMC/Chevy Sierra pickups and all 2000-2006 Tahoes, Suburbans, Yukons, and Denalies.
