Question about 2012 Chevrolet Impala LS Sedan 3.6L V6 FFV 6-speed Automatic

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My 2012 Chevy Impala makes a loud rumbling, vibrating, rattling sound when I first start it up and slowly go to back up in reverse

When I start my car up and put it in reverse, there is a loud rumbling, rattling sound that I can't tell where it is coming from. It sound's like I have no muffler and the sounds carries underneigh the car. It goes away after about 1 to 2 minutes when I am back in reverse. It only happens when I am slowing backing up in reverse and right when I first start the car up.

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Posted on Jan 02, 2017

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SOURCE: 2005 suburban and there is a loud rattling noise

Your heat shieid is ratting.

Posted on Dec 21, 2010

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SOURCE: Noisy rattle in engine compartment of 2003 Impala on cold start.

Take a broom handle(with the broom removed) or long heavy dowel rod , start the engine when cold and place one end of handle to your ear and the other to different parts non-moving parts of the engine compartment,including the engine to narrow down  the location of the noise. 

Posted on Dec 22, 2008

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SOURCE: 2006 Chevy Trailblazer loud thunk noise at start up

My first guess would be the front u-joint on the drive shaft. Try twisting the u-joint to see if there is any play, which there shouldn't be. If the u-joint is OK, have the transmission checked out at a reputable shop. There could be a problem with the torque converter, the valve body, or the bands. You didn't say whether this was a 4 wheel drive or not, but I doubt that the problem is with the transfer case. Let me know what you find.

Posted on Mar 10, 2009

  • 245 Answers

SOURCE: knocking sound from wheel well

it sounds like you have a bad cv axle on the drivers side.

Posted on May 15, 2009

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SOURCE: I have a 2008 chevy impala. The car suddenly

ur vehicle is in limp mode[ a safe mode ] which will get u home trying not to cause any damage to engine --theirs a few reasons the vehicle will do this-low oil pressure-transmission problem-have vehicle scanned most auto stores such as auto zone / advanced auto [check ur local area]do this service for free the code gives u a start point towards resolving ur problem

Posted on May 11, 2010

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