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Old 01-07-2015, 01:11 PM   #99
aquaholic
 
Drives: 2012 Camaro Convertible
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Just bought a 2012 L99 - vibration as RPMs are dropping is coming from two spring loaded valves in the exhaust pipes, close to the rear axle. You can see them if you put your head under the rear of the car and have someone else blip the throttle...you'll see them vibrate/rattle. Muffler shop said they get weak over time. I would post a pic, but I can't figure out how to get dropbox.com pics to post.
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Old 02-11-2015, 06:53 PM   #100
Mluisi
 
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Hey everyone I've been reading your posts and I just bought a 2015 v6 LS manual. When I accelerate above 3000 rpm I begin to hear a metallic ratltling noise coming from the drivers side sound like from the engine!! Everything below 3000 is clean. But this noise is pissing me off it had 600 miles for God sakes. Took it to the lousy dealer and they said nothing was wrong but I feel Like that's not the case. Someone please help should I go back?
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Old 02-11-2015, 06:55 PM   #101
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To add on to that I use plus gas from WAWa and it suggests regular unleaded. But I'm pretty sure plus (a mix of premium and regular) should run better
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Old 03-17-2015, 08:01 PM   #102
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Well this is good news i just bought a 2010 SS and im having the same issue. Luckily its gm certified used so it will be under warranty.
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