Cobalt SS :: 2008 - Growling Noise From Transmission Area When Drive In Heavy Rain
Jul 14, 2013
I drive a 2008 Cobalt SS turbo. its been a good car and I haven't had any major problems with it aside from the small stuff.
Well for the past few months I've noticed that, whenever i drive in heavy rain or in snow etc I will get a loud Growling/whining noise from the transmission area. Now it will do it while in Neutral, 1st etc and when stopped it will go away. If I stop the car for a few moments, the noise goes away until I hit another puddle and then it comes back again.
I also feel a "knocking" in the shifter and I've noticed its vibrated really badly for awhile now.
the caveat to this is it ONLY does it when its wet outside. I've taken it to GM a few times, and even showed the service manager the issues when it was raining out and he said everything was fine. The car never did it when I first purchased it.
I should include that there are some aftermarket modifications on the car. Catless downpipe, new intercooler, lowering springs. stock exhaust and stock turbo.
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