Quote:
Originally Posted by ZLRob
Exactly. The engine mounts are absolutely good and I just checked the CB here very recently and I don't do hard take offs like drag strip stuff so the chances of that thing getting wasted between the time I checked it and now is HIGHLY unlikely, especially since I checked it within the last 3-5K miles. The only thing that leaves is the trans mount and the diff. To answer your first question though, yeah, it sounds like it's coming from the rear. I give it some throttle when backing up, and if it's anything more than a gentle feather I feel this THUMP feeling.
The fact that no one offers a poly trans mount for these cars yet is mind numbing considering that they offer poly crap for literally everything else around the car.
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I guess check your bolts on all the control arms. Look for "shadows" of where you can see the bolt has slightly shifted.
On the impalas i see pretty regularly a pop noise in the rear from a bushing that is pressed into the knuckle that a control arm bolts to. I know it's a whole different knuckle but good info for diag.