GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Release the parking brake.
  2. Turn the ignition switch to ON (engine OFF).

Brake warning indicator remains OFF.

    • Brake Warning Indicator Always On.
    • Brake Warning Indicator Inoperative (with Low Brake Fluid).

2

  1. Turn the Ignition Switch to START then back to ON (allow the engine to idle).
  2. Turn the ignition switch to the OFF position.

Brake Warning Indicator remains OFF when ignition switch is in the ON or the START positions.

    • Brake Warning Indicator Always On.
    • Brake Warning Indicator Inoperative (with Low Brake Fluid).

3

  1. Return the ignition switch back to ON.
  2. Set the parking brake.
  3. Release the parking brake.

Brake Warning Indicator remains ON only when the parking brake is set.

    • Brake Warning Indicator Always On.
    • Brake Warning Indicator Inoperative (with Parking Brake Applied).

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