Clunk in the Trunk :)

maverick470

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Hello Fellow Viper Owners & Enthusiasts. I recently purchased the 2013 SRT GTS shown in my profile picture with ~8,000 miles on it. It has a clunk in the rear end that occurs after completing a shift then getting back on the accelerator and also when there is no shift involved and I just get back on the accelerator after lifting. In all situations, it only occurs after getting back on the accelerator and it does it at non-aggressive, slow speeds in the city, at high speeds on the highway and when ripping through the gears aggressively.

This is my first Viper so I took it into the Dodge dealer and they determined that it needed a new transmission mount and stated that it had already been replaced once because there was currently an after market mount installed. I thought, 8K miles and it's already chewed through 2 transmission mounts, hmmmmm, but I had them replace it and it fixed ABSOLUTELY nothing. While they had it I also asked them to check the U-Joints and they said the U-Joints and half shafts were all good, yet the clunk persists. The dealer then surmised that the problem must be in the rear end and informed me that parts are no longer available (yes, I understand that after market parts are available but the dealers can't use those).

I did search the forums here before posting this but didn't find anything that seemed to closely mimic my condition. I apologize in advance if I missed something in previous forum posts.

Has anyone experienced this with a Gen V Viper? What was the fix?
 

Steve M

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What is your ability to get under the car, get the belly pan off, and start poking around yourself?

Could be mounting bushing related, could be internal to the diff, or could be internal to the axles (e.g., worn or damaged CV joints). It could also be something completely unrelated to the drivetrain, like worn or damaged suspension components.

If you can reproduce the sound by rotating the driveshaft by hand, it would help tremendously to narrow things down a bit. You can also look for anything that looks like it might be rubbing.
 
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