GM Service Manual Online
For 1990-2009 cars only

Cause

Correction

Important: 

   • Inspect for the proper gear oil levels prior to performing system diagnosis. Refer to Lubricant Level Check .
   • Operate the vehicle turning in tight circles in both left and right directions. A chatter type concern may indicate an incorrect type gear oil, lack of the friction modifier additive, or worn friction discs and/or plates.

Worn or loose rear axle mount and/or bracket

Repair or replace as required.

Worn axle shaft constant velocity joints

Replace the constant velocity joints as required.

Worn wheel bearings

Replace the wheel bearings as required.

Incorrect gear oil

Fill to the proper level with the correct gear oil and friction modifier additive. Refer to Sealers, Adhesives, and Lubricants and Lubricant Change .

Worn clutch plates

Replace the friction discs and plates as required.