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