GM Service Manual Online
For 1990-2009 cars only

Causes

Correction

Loose front suspension parts

Locate and tighten, repair or replace the loose front suspension components.

Worn out brake linings

Replace the brake linings.

Uneven brake lining material

Replace the brake linings.

Contaminated brake linings

Replace the brake linings.

Linings damaged by abusive use

Replace the brake linings.

Scraping Noise

  • Loose front suspension parts

Locate and tighten, repair or replace the loose front suspension components.

  • Worn out brake linings

Replace the brake linings.

  • Uneven brake lining material

Replace the brake linings.

  • Contaminated brake linings

Replace the brake linings.

  • Linings damaged by abusive use

Replace the brake linings.

  • Front or rear brake assembly attachment loose

Locate and tighten the loose brake components.

Chatter/Roughness

  • Scored rotor

Refinish rotor surface or replace the rotor.

  • Improper thickness variation in rotor

Repair or replace the rotor.

  • Out-of-balance tire and wheel assembly or assemblies

Locate and repair out-of-balance tire and wheel assembly or assemblies

  • Excessive rotor lateral runout

Repair or replace the rotor.

  • Loose front or rear brake assembly attachment

Locate and tighten the loose brake components.

  • Loose front suspension parts

Locate and tighten, repair, or replace the loose front suspension components.

  • Incorrect wheel nut torque

Tighten the wheel nuts to specification.

  • Poor drum surface finish

Refinish the drum surface or replace drum.