GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Check the master cylinder fluid level.

Master cylinder fluid level between ADD and FULL.

The master cylinder fluid level is low. Fill the Master Cylinder Reservoir as needed. Refer to Master Cylinder Reservoir Filling .

2

  1. Park brake not applied.
  2. Start the engine.

Brake warning indicator illuminates briefly (approximately 5 seconds) then turns off.

3

With the vehicle in PARK, press the brake pedal.

    • Brake pedal moves steadily towards floor, approximately 5-7.62 cm (2-3 in).
    • Brake pedal stops and is firm against the pressure.

4

Release the brake pedal.

Brake pedal returns to normal height.

Brake System Slow Release

5

  1. Press the brake pedal.
  2. Shift vehicle into DRIVE.
  3. Perform Brake System Test. Refer to Brake System Testing .
    • Braking action starts after applying the brakes.
    • Brakes do not grab - brake pedal does not vibrate.
    • Vehicle stops without excessive pedal effort.
    • Vehicle stops without pulling to one side.
    • Front and rear brakes apply evenly.
    • Vehicle stops without noise coming from the brakes.
    • Vehicle stops without noise coming from the Vacuum booster.
    • Brakes do not drag after releasing the brake pedal.
    • Brakes do not make noise while driving.
    •  Brakes Drag

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.