GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Exterior Lights System Check?

--

Go to Step 2

Go to Exterior Lights System Check

2

  1. Turn the hazard flasher switch to the ON position.
  2. Observe the lights on the malfunctioning side.

Do all the lights flash?

--

Go to Step 3

Go to Step 4

3

  1. Turn the hazard flasher switch to the OFF position.
  2. Place the ignition switch in the RUN position.
  3. Place the turn/hazard switch to the side that is not operating.
  4. Connect a J 35616-200 test lamp from CKT 14 (LT BLU) or CKT 15 (DK BLU) at connector C266 to ground.

Does the test lamp light?

--

System OK

Go to Step 6

4

Connect a J 35616-200 test lamp from CKT 14 (LT BLU) or CKT 15 (DK BLU) at the park/turn or marker lamp connector to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 7

5

Connect a J 35616-200 test lamp from CKT 14 (LT BLU) or CKT 15 (DK BLU) to CKT 150 (BLK) or CKT 250 (BLK) at the park/turn or marker lamp.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

6

Replace the turn/hazard switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .

Is the repair complete?

--

Go to Exterior Lights System Check

--

7

Repair the open in CKT 14 (LT BLU) or CKT 15 (DK BLU) between the affected park/turn or marker lamp and connector C102, or between connector C102 and connector C266. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

8

  1. Inspect the condition of the bulb sockets.
  2. Repair the bulb sockets, as necessary.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Repair the open in CKT 150 (BLK), CKT 250 (BLK), or CKT 9 (BRN) between the affected park/turn or marker lamp and ground G113 or ground G112. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--