Clunking coming from rear end

[stlrammer]

I have a manual tranny and I have clutch clunk based on load. It happens ~25% of time and normally between 1st and 2nd. This condition existed from day one and I'm at 28K miles. Two different dealers said it is normal. Just listened to your video and not the same sound. Get it to dealer soon.

[humblebeast07]

I tried to make it to work for the next 2 days and go to the dealer on sat, but on the way to work today it was not a clunk it was a THUMP THUMP, reminded me of my crown vic when the u joint broke...same thump thump

[wakespeak]

Yeah check for play in the u-joints. You can stick a screwdriver in there to turn it with the motor off and check for play. Not sure on the Camaro but some driveshafts use rubber joints instead of or together with u-joints as well that can tear/crack. For that you have to usually pull the driveshaft and check.

[humblebeast07]

Well shes at the doctors office right now, I hope Its not something serious, and i get her back soon, Ill keep yall updated. Thanks davidcroft, I know shes in good hands

[markgws6]

I had some drive train noise and shifting problems so I took my car down to the dealer and they replaced some bearings in the diff and also filled it with ZR1 diff fluid. The mechanic compared it to another ZL1 (same tranny) and it felt different to him like excessive play and the recommendation from GM was to do this and replace the brake/clutch fluid. But my sound did not come from the rear end... and I sometimes still get the clunking from what sounds like the clutch but not under load.

[markgws6]

That is definitely much worse than anything I've heard. It sounds like bad bearings or possible u-joint issues as mentioned already.

Originally Posted by humblebeast07

your really here it @15-20 seconds

[Chevrolet Customer Svc]

Glad to hear she is in good hands! Yes, please keep us posted on the outcome.

Jessica
Chevrolet Customer Care

Originally Posted by humblebeast07

Well shes at the doctors office right now, I hope Its not something serious, and i get her back soon, Ill keep yall up dated. Thanks davidcroft, I know shes in good hands

[humblebeast07]

Well just to let you guys know, I broke some teeth in the rear diff.....Warranty has got it covered though, bad news...it looks like it may take some time to get my ride back though....parts are back ordered

[Lumino1LE]

Originally Posted by humblebeast07

So im at about 7800 miles(hard miles..burn outs, launches ect) on my 1LE and I hear....notice a "clunking" with the rotation in the wheels. I work at a mechanic shop , so I decided to put it on my alignment rack, raise up the rear end put it in gear (tried 1-4th) and listen from under the car. I found that the rear diff and transmission make a significant amount of noise(lots of random noises from trans and clunk clunk clunk from diff). Im trying to find out if and one else has dealt with these type of issues before removing my headers and intake and bringing it to the dealer. Thanks

I've tracked mine 20+ hours and it makes that noise on the track on really tight turns while braking.

I also notice that the transmission gets quieter as it warms up. Almost like butter when it's really warm.