GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

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

Connector End View Reference: Lighting Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Turn OFF the ignition.

Are the daytime running lamps (DRL) OFF?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

Repair a short to ground in the DRL control circuit between the DRL series dropping resistor and the DRL ON relay. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3