GM Service Manual Online
For 1990-2009 cars only

Turn Signal Lamp Inoperative - Right Side Rear Domestic

Step

Action

Value(s)

Yes

No

DEFINITION: The right rear turn signals do not operate, but all other front and rear turn signals and the taillamps (rear park lamps) operate correctly.

1

Review the turn signal operation and perform the necessary inspections.

Did you complete the system review and inspection?

--

Go to Step 2

Go to Symptoms

2

Attempt to operate the right turn signals.

Does the system operate normally?

--

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

Go to Step 3

3

  1. Visually and physically examine the turn signal bulb.
  2. Replace the bulb if it is defective.

Did you replace a defective bulb?

--

Go to Step 5

Go to Step 4

4

Repair the open CKT 15 (DK BLU) between splice S237 and the right rear turn signal lamp connector.

Did you complete the repair?

--

Go to Step 5

--

5

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3

Turn Signal Lamp Inoperative - Right Side Rear Export

Step

Action

Value(s)

Yes

No

DEFINITION: The right rear turn signal is inoperative, but all other front and rear turn signals are operating.

1

Review the turn signal operation and perform the necessary inspections.

Did you complete the system review and inspection?

--

Go to Step 2

Go to Symptoms

2

Attempt to operate the turn signals.

Does the system operate normally?

--

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

Go to Step 3

3

  1. Remove the bulb from the right rear turn signal lamp connector.
  2. Test continuity between ground and the ground terminal of the right rear turn signal lamp connector.

Is continuity present?

--

Go to Step 5

Go to Step 4

4

Locate and repair the open CKT 250 (BLK) between the turn signal lamp connector and ground.

Did you complete the repair?

--

Go to Step 8

--

5

  1. Turn the ignition ON with the engine off.
  2. Place the turn signal switch in the right turn position.
  3. At cavity A of the turn signal lamp connector, measure the voltage of the power feed CKT 15 (DK BLU).

Did the measurement equal battery voltage?

B+

Go to Step 7

Go to Step 6

6

Locate and repair the open CKT 15 (DK BLU) between the right rear turn signal lamp connector and ground.

Did you complete the repair?

--

Go to Step 8

--

7

Replace the right rear turn signal lamp bulb.

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