GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Turn the ignition switch to the RUN position.

The BRAKE warning indicator is on for 3 to 5 seconds.

Brake Warning Indicator Inoperative

2

  1. Apply the parking brake.
  2. Release the parking brake.
  1. The parking brake indicator turns on.
  2. The parking brake indicator turns off.

Brake Warning Indicator Inoperative

3

Turn the ignition switch to the bulb test position (just past the RUN position).

  1. The ANTI-LOCK indicator turns on.
  2. The BRAKE indicator turns on.

Brake Warning Indicator Inoperative

4

Start the engine and let the engine idle.

The BRAKE warning indicator remains off unless a fault is detected in the base brake system, the parking brake is engaged, or the brake fluid level is low.

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