GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

   • 

Turn ON the ignition switch, with the engine OFF.

   • 

Place the headlamp switch in the OFF position.

   • 

Ensure the parking brake is disengaged.

Does the DRL indicator illuminate?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Are the daytime running lights illuminated?

Go to Step 4

Go to Diagnostic System Check - Lighting Systems

4

Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement .

Did you complete the repair?

Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3