I HAVE A 99 SS WITH A FULL BMR REAR SUSPENSION AND MOSER 12 BOLT. THE 12 BOLT LEAKS OUT OF THE FRONT SEAL AND WHINES REAL BAD IT HAS 4.11, EATON POSI, 3-CHANNEL ABS, 33 SPLINE, ALUMINUN COVER, AND 4130 YOKE. AS FOR THE SUSPENSION IT IS EXTREMELY NOISY, I HAVE THE EXTREME SWAY BAR WHICH I KNOW IS NOISY BUT THE REAR HAS A CONSTANT THUD OR KNOCK WHEN YOU FIST RELEASE THE CLUTCH AND SOME TIMES WHEN I STOP. I ALSO HAVE THE TORQUE ARM AND IT KEEPS HITTING MY DRIVESHAFT TUNNEL ANY FIXES OUT THERE FOR THIS. ANY HELP IS GREATLY APPRECIATED, THANKS JESSIE.

 

TTT

I also have the same prob... thuds on clutch engagement.. My strange 12 bolt has the 33 spline, abs, tcs.. it leaks from the cover.. I also get lots of squeaking, only a short few days after greasing my setup.. and on a first gear downshift.. incredible wheelhop.

-Josh