GM Service Manual Online
For 1990-2009 cars only

Causes

Correction

Worn out brake linings

Replace the brake linings.

Uneven brake lining wear

Replace the brake linings.

Incorrect lining material

Replace the brake linings.

Contaminated lining material

Replace the brake linings.

Linings damaged by abusive use

Replace the brake linings.

Improper rotor surface finish

Recondition the rotor surface or replace the rotor.

Scored rotor

Recondition the rotor surface or replace the rotor.

Improper thickness variation in the rotor

Repair/replace the rotor.

Excessive rotor lateral runout

Repair/replace the rotor.

Damaged vacuum booster

Replace the vacuum booster.

Front and/or rear brake assembly attachment loose

Locate and tighten the loose brake components.