GM Service Manual Online
For 1990-2009 cars only

Turn Signal Lamps and Indicators Inoperative - One Side Right

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 right side turn signal lamps are inoperative.

Are the right side turn signal lamps inoperative?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Disconnect connector 216. Refer to Lighting Systems Components .
  2. Turn the turn signal switch to the RIGHT position.
  3. Test for an open between terminals 11 and 12.

Is an open present?

Go to Step 5

Go to Step 4

4

Replace the turn signal switch. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR.

Is the repair complete?

Go to Step 8

--

5

Test for an open in the GRN/YEL wire between connector 216 and the junction block.

Is an open present?

Go to Step 6

Go to Step 7

6

Repair the open in the GRN/YEL wire between connector 216 and the junction block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 8

--

7

Replace the junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems.

Is the repair complete?

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

Turn Signal Lamps and Indicators Inoperative - One Side Left

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 side turn signal lamps are inoperative.

Are the left side turn signal lamps inoperative?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3

  1. Disconnect connector 216. Refer to Lighting Systems Components .
  2. Turn the turn signal switch to the LEFT position.
  3. Test for an open between terminals 16 and 12.

Is an open present?

Go to Step 5

Go to Step 4

4

Replace the turn signal switch. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR.

Is the repair complete?

Go to Step 8

--

5

Test for an open in the GRN/RED wire between connector 216 and the junction block.

Is an open present?

Go to Step 6

Go to Step 7

6

Repair the open in the GRN/RED wire between connector 216 and the junction block. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

Go to Step 8

--

7

Replace the junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems.

Is the repair complete?

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3