| |
 Jim Grant's Tech Tips '03 Chevy Trailblazer, Musty A/C
Q: My Girlfriend has an ‘03 Chevy Trailblazer. When the vehicle is first started up, and usually in warmer weather, there is a musty smell coming from the ventilation system. She has already taken the vehicle in for this problem and they put a kit on it that cycles the fan for about 10 seconds at 15 minute intervals. My question is, is there a cabin filter on this vehicle or is there a better solution to this problem? Other than that, she likes her Trailblazer. A: Your girlfriends' Chevy Trailblazer is not equipped with a cabin air filter system. The Trailblazer’s seem to be suffering from an odor (microbial growth) problem that is the result of water retention problem in the A/C system. The modification that was installed in the vehicle is designed to operate the blower motor (when deemed necessary by a little computer) for 10 seconds every 10 minutes up to 2 hours after the vehicle is turned off. The reasoning of this is to dry out the A/C unit of any water that has collected. Also, GM has a coating to spray on the A/C evaporator's cooling fins to help kill and prevent the swamp growth that is occurring. We’ve had some reasonable success with the aftermarket treatments. But, depending on the weather it has to be applied annually, if not more often. At this time I'm not aware of any real fixes for the problem.
|
|
