GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Inspect the headlamp and the instrument panel (IP) lamp dimmer switch harness connector for a poor connection.

Is there a poor connection?

Go to Step  3

Go to Step  4

3

  1. Repair a poor connection on the headlamp switch.
  2. Inspect the system.

Is the symptom still present?

Go to Step  5

--

4

  1. Replace the headlamp and IP lamp dimmer switch. Refer to Headlamp Switch Replacement .
  2. Inspect the system.

Is the symptom still present?

Go to Step  5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2