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 for a short to B+ on CKT 8.

Is there a short?

Go to Step 3

Go to Step 4

3

  1. Repair a short to B+ on CKT 8.
  2. Inspect the system.

Is the symptom still present?

Go to Step  5

--

4

  1. Replace the headlamp and instrument panel (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