GM Service Manual Online
For 1990-2009 cars only

Noisy on Turns

Cause

Correction

Inspect for the 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 pack condition 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 gear oil GM P/N United States 12378514, GM P/N Canada 88901045.

Worn differential side and/or idler gears and worn cross pin

Replace the gears and pin as required.

Worn clutch plates

Replace the clutch drum.