GM Service Manual Online
For 1990-2009 cars only

Brake Pad Inspection LWB SWB

    Caution: Refer to Safety Glasses Caution in the Preface section.

    Caution: Refer to Vehicle Lifting Caution in the Preface section.

    Caution: Refer to Brake Dust Caution in the Preface section.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the front wheels. Refer to Tire and Wheel Removal and Installation .
  3. Carry out a visual inspection of the front brake assemblies.
  4. With the aid of an assistant or a brake pedal holding bar, apply and hold the foot brake.

  5. Object Number: 1943406  Size: SH
  6. Using a vernier caliper gauge, on the outer brake pad backing plate (2), take note of the measurement from the brake pad backing plate (2) to the brake disc (1), as shown in the diagram.

  7. Object Number: 1943412  Size: SH
  8. Using a vernier caliper gauge, on the inner brake pad (2), take note of the measurement from the brake pad backing plate (2) to the brake disc (1), as shown in the diagram
  9. Replace the pads if .
  10. • Either reading is 10 mm or less (this equates to 3 mm lining material remaining on the brake pad).
    • If there is more than 2 mm variation between the inner and outer brake pad reading, this may indicate that the caliper is partially sticking.