Question about 2007 Chevrolet Equinox LS New Cars
Anyone have any ideas on a loud noise sounds like a open exhaust noise from the front of the car it gets louder under load but does not seem to affect the power on a Equinox, Torrent, or Buick Lucern? This condition only happens in rainy conditions. Not a light rain but a medium to heavy rain. The air filter is dry the dealer has tryed to replace the cat. converter twice and rear exhaust once. we have removed the heat shields to check for burn carbon marks found none. loosened the motor and trans mounts to "relax" them per GM tsb and have had no luck. There are no oil leaks no obvious damage this condition has been from new to now at 46000 miles and no change. Looking for help or any ideas. I can not believe GM does not know the fix for this with a ton of concerns out there. People in seattle Washington must not drive any Equinox, Torrent, or Buick Lucerns. All of these cars can have this problem.
I had a trooper that did the same thing (it had a GM motor). I discovered that when water hit the exhaust pipe in the front of the vehicle it warped and came loose from the exhaust manifold. When it dried off it warped back and made full contact with the exhaust manifold and was quiet again until the next puddle. It kept getting worse. The actual problem was that the clamp that held the exhaust pipe to the exhaust manifold was cracked. You needed to look very close to see the crack. Once I had the clamp replaced the problem was gone. Hope this helps.
Posted on May 22, 2009
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Posted on Jan 02, 2017
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