GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle.

2

  1. Turn the ignition switch to the RUN position.
  2. Turn the headlamp switch to the ON position.
  3. Place the headlamp dimmer switch to the low beams position.

Does the high beam indicator turn OFF as expected?

Go to Testing for Intermittent Conditions and Poor Connections.

Go to Step 3

3

Do the high beam headlamps turn OFF as expected?

Go to Step 4

Go to Symptoms - Lighting Systems.

4

Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the condition?

System OK

Replace the IPC. Refer to Control Module References, for replacement, setup, and programming.