GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the instrument panel cluster (IPC) connector.
  3. Test for an open or high resistance in the left turn signal input circuit (14). Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

System OK

Go to Step 3

3

Inspect the turn signal bulb and the connections to the cluster. If the bulb and connections are OK, replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Did you complete the repair?

System OK

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