GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 28662 Brake Pedal Effort Gauge

Diagnostic Procedure

At frequent intervals, check the brake pedal travel. Brake pedal travel is the distance the pedal moves toward the floor from a fully released position. Make this check with the brakes cold. Apply about 445 N (100 lb) on the pedal using the J 28662 .

  1. Apply the brake pedal six to ten times with the engine OFF.

  2. Object Number: 156222  Size: SH
  3. Measure the distance (1) from the bottom of the steering wheel to the brake.

  4. Object Number: 197536  Size: SH
  5. Apply about 445 N (100 lb) of force to the brake pedal using the J 28662 .
  6. With the force applied to the brake pedal, measure the distance (2) from the bottom of the steering wheel to the brake pedal.
  7. Subtract measurement (1) from measurement (2) in order to determine brake pedal travel.
  8. Brake pedal travel should be 50-72 mm (2-3 in).