I have a 2000 LS V8 with 160,000 miles. About two weeks ago the vehicle suddenly started to have a regular banging/clunking from the rear end near the rear differential when accelerating from a dead stop. The noise and clunk only persists for about 10 feet or 2 sec and doesn't happen when accelerating if I'm already moving. Also if I allow the car to roll for a few feet and then accelerate it does not happen. The noise/clunk increases in intensity when I accelerate harder.
Clunk from rear when accelerating from stop
- Thread starter dreigen
- Start date
G-RELL
FULLY DIPPED LS
sounds dangerous, and something that will get worse (and more expensive) the more you drive... I was going to have you check u joints, but a repeating "clunk" doesn't seem to match.
Yeah I was thinking that at first too. It started suddenly with no gradual indications of noise and only from a stop. If I slow to 5 mph and then accelerate there is no noise or clunk. It sounds and feels to be coming from the middle rear around the rear differential as far as I can tell.
pragmatic
Dedicated LVC Member
Center bearing on the driveshaft will cause a loud thumping that sounds like its coming from the rear. My V6 MT started doing this just during clutch release when pushed hard in first gear. Eventually it was when ever starting out in first gear only lasted until the maybe 5 -10 mph. Could not get it to do it if I was not releasing the clutch from a dead stop. Unfortunately you can't really check it without dropping the exhaust and the heat shield. But its not hard to change (if the part is still available).
pragmatic
Dedicated LVC Member
pragmatic
Dedicated LVC Member
Now just get one from FoMoCo or RockAuto (RA lists it for $73 under drivetrain/driveshaft center support) and change it. Watch those weighted nuts and bolts on the driveshaft rubber isolated. They're there for balance so they have to go back in the same position they came out of.