For 1990-2009 cars

Cause | Correction
--- | ---
Inspect for proper gear oil levels prior to performing system diagnosis. Operate the vehicle turning in tight circles, in both left and right directions. Moan, groan, chatter, or a pulsing type concern may indicate a pump or clutch park problem within the axle assembly.
Worn or loose rear axle mounts | 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 | Replace with correct gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . Refer to Rear Axle Lubricant Replacement .
Worn differential side and/or idler gears and worn cross-pin | Replace gears and pin as required.
Worn clutch plates | Replace clutch drum.