2002 Chevy Suburban. 90,000 miles. Great vehicle. my mechanic cannot determine the cause of a loud sound emitting from the front passenger side of the vehicle. It is on the outside of the truck, based on how loud it is, especially with the passenger window down. Shortly after starting and driving a few hundred feet, while accellerating, a loud fluttering/air compressor sound emits from somewhere near the front passenger tire side. (Like a steady buzzing, I picture air shooting out of a hose) My mechanics have never heard this before. They are totally stumped. The sound will continue while I accellerate, but diminish when I let off the gas. I first noticed it while driving steadily for 2 hours at 65 MPH towing a 27 foot travel trailer(4 second buzz, it would stop, then 2-3 minutes later another 4 second buzz, repeat. We pulled over at a rest stop and a lot of water was pouring off from under, but my mechanic says that is normal from the AC condensation.) It has been happening only 3 days, and each day the temperature here has been in the low 90's. Not sure that is a factor, but maybe. No leaks, the brakes are fine, suspension fine, brakes fine. The sound may be under the hood, but it is so loud and frustrating since we can't ride out there and listen while it's happening! 2 mechanics totalling 40 years experience are both stumped. Any clue you can provide will be much appreciated. We absolutely love the suburban for our family of 7 here in western New York State.
Jun 1, 2006 at 7:01 AM