GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Exterior Lights Circuit Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

Verify that the left front turn signal lamp is inoperative.

Is the left front turn signal lamp inoperative?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Turn the ignition switch to the ON position.
  2. Turn the turn signal switch to the LEFT position.
  3. Connect a test lamp between the turn signal lamp connector terminal 3 and ground.

Does the test lamp flash?

Go to Step 5

Go to Step 4

4

Repair the open in the GRN/RED wire between the turn signal lamp and the junction block. Refer to Wiring Repairs in Wiring Systems and Lighting Systems Components .

Is the repair complete?

Go to Step 6

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5

Repair the open in the BLK wire between the turn signal lamp and S202. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3