.......... and other road irregularities. A definite squeaking sound from the rear of the car most noticeable on the descent from a speed bump. Goes away if the car is wet. I have tried to isolate the cause and it's not the deck lid or anything inside the trunk. Tried bouncing the rear of the car by hand and all is quiet. Has anyone had this problem and found the fix? (Another person I know who has an '09 Impala has the same problem).
I had the same thing. It's the rear sway bar end links. They are worn out and loose. Grab them and twist them, they should not move much at all. Originals are very weak. Moog replacements are much heavier and are greasealbe.
2007 Monte Carlo SS White with Red Pace Car checkered flag graphics, Red SS inserts and Taz graphics.
3" Hogan catted downpipe, 3" electric exhaust cutout, cortex tuned, custom cai w/aluminum box, relocated iat sensor, custom made 1.5" throttle body spacer, wrapped cross pipe, rotated engine mount, Pace Car side graphics, really good looking driver, upgrade speakers and 6 cd changer.
They tried and couldn't. Since then I replaced my rear speakers with some Infinity Kappas so I had to remove the rear seat and package shelf. Now all back together and no noise and the speakers sound nice too.