Rear End Clunk Woes

[moproblems]

Hello,

I have an 04 SMG that I have been fighting a rear end clunk (almost a bang) for a while, it's coming from the rear somewhere and I can't seem to find it. Happens low speed when pulsing the throttle, on shifts with the SMG especially at high shift settings. You may think it's diff bushings, well, so did I. I have replaced:

• RTABs (Monoball)
• Diff bushings
• Subframe bushings
• Guibo
• CSB
• All other rear bushings
• Installed Vincebar and lower plates

I inspected the diff when I did seals and didn't notice anything abnormal. Driveshaft CV did not visually have play when pulsing the car with the ebrake on while still making the noise. I need to get it up in the air and see if it's a bad CV on an axle and if it's not that I'm going to guess it's the differential. Is there anywhere else historically I should look at, or just any ideas? I am currently stumped.

[sapote]

I'm going to guess it's the differential..

I agreed that I also think it's the diff.I think if you remove a few clutch disks off the LSD to make it's an open diff then the noise will be gone. The loud clunk caused by the sudden slipage of the LSD clutches which caused the spider gears hit the side gears hard.

[moproblems]

I agreed that I also think it's the diff.I think if you remove a few clutch disks off the LSD to make it's an open diff then the noise will be gone. The loud clunk caused by the sudden slipage of the LSD clutches which caused the spider gears hit the side gears hard.

It's interesting that it happens almost all the time, not like normal m-clunk where it's low speed. I could maybe replace the plates as a stopgap until I save the money for an aftermarket LSD.