GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Turn the parklamps on.

The following lamps are all on:

    • Tail/Stop
    • Rear Side Marker
    • License
    • Tail
    • Front side marker
    • Park/Turn

2

  1. Turn the ignition switch to the RUN position.
  2. Operate the turn signal switch to the left or the right position.
    • The park/turn and tail/stop/turn lamps flash continuously on and off.
    • The turn signal indicator flashes on the IP according to which position the turn signal switch is in.

3

Turn the turn signal switch off.

The park/turn and tail/stop/turn lamps are off.

Turn Signal Lamps Always On - One Side

4

  1. Turn the Ignition to the OFF position.
  2. Turn the hazard switch on.
    • The park/turn and tail/stop/turn lamps flash continuously from minimum intensity to maximum intensity.
    • Both turn signal indicators flash on the IP.

5

  1. Turn the hazard switch to the OFF position.
  2. Turn the ignition switch to the RUN position.
  3. Depress the brake pedal.

The center high mounted stop lamp, tail/stop/turn lamp, and tail/stop lamp (Chevrolet Only) are on.

    •  Stop Lamps Inoperative

6

Release the brake pedal.

The stop lamps turn off.

Stop Lamps Always On

7

Turn the ignition to the RUN position.

The Daytime Running Lamps (DRL) turns on.

    • Daylight -- the park/turn lamps are on (non-flashing).
    • Low light -- the park/turn lamps, side marker lamps, and low beam headlamps are on.

Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally

8

  1. Set the park brake.
  2. Turn the ignition to the RUN position.

The Daytime Running Lamps (DRL) are off.

Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally