GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Diagnostic System Check - Lighting Systems?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Test for an open in the flash to pass ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Was an open found and corrected?

System OK

Go to Step 3

3

Inspect for poor connections at the turn/headlamp switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

System OK

Go to Step 4

4

Replace the turn/headlamp switch assembly. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column.

Is the repair complete?

System OK

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