Did you perform the Lighting Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

Do the left turn signal lamps operate properly?

Go to Step 3

Go to Turn Signal Lamps Inoperative - Hazard Lamps Operate

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Move the turn signal lever to the left turn position.
4. With the scan tool, observe the Left Turn Signal parameter in the instrument cluster (IPC) data list.

Does the scan tool indicate that the Left Turn Signal parameter is On?

Go to Step 6

Go to Step 4

Test the LH turn signal circuit for an open or high resistance between the instrument cluster (IPC) and the splice of the LH turn signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 5

Inspect for poor connections at the harness connector of the instrument cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 6

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, perform the Display(s) Test in instrument cluster (IPC) Special Functions.
4. Observe the left turn indicator on the instrument cluster (IPC) during the Display(s) Test.

Does the left turn indicator illuminate during the Display(s) Test?

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

Go to Step 7

Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console.

Did you complete the replacement?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2