GM Service Manual Online
For 1990-2009 cars only

Tail Lamp Inoperative - Left Rear Export

Step

Action

Value(s)

Yes

No

1

Was the Exterior Lights System Check performed?

--

Go to Step 2

Go to Exterior Lights System Check

2

  1. Remove the bulb from the left rear tail lamp (park and stop) assembly.
  2. Remove the bulb from the left park lamp.
  3. Connect a J 39200 DMM between the left rear tail lamp (park and stop) assembly connector cavity G for CKT 150 (BLK) and ground, or the left park lamp cavity G for CKT 150 (BLK) and ground.

Is continuity present?

--

Go to Step 3

Go to Step 4

3

  1. Connect a J 39200 DMM between the left rear tail lamp (park and stop) connector cavity B for CKT 909 (BRN) to ground or the left park lamp cavity B for CKT 909 (BRN)to ground.
  2. Place the headlamp switch in the park lamp position.

Is voltage present?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 150 (BLK) between the left rear tail lamp (park and stop) to ground G400 or the left rear tail lamp to ground G400.

Is the repair complete?

--

Go to Exterior Lights System Check

--

5

Replace the left rear tail lamp (park and stop) bulb or the left park lamp bulb.

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open in CKT 909 (BRN) between splice S324 and the left rear tail lamp connector or the left park lamp connector.

Is the repair complete?

--

Go to Exterior Lights System Check

--

Tail Lamp Inoperative - Left Rear Domestic

Step

Action

Value(s)

Yes

No

1

Was the Exterior Lights System Check performed?

--

Go to Step 2

Go to Exterior Lights System Check

2

  1. Remove the bulb from the left rear taillamp or the left rear park and turn signal lamp connector.
  2. Connect a J 39200 DMM between the left rear taillamp or the rear park and turn signal lamp connector, cavity G for CKT 150 (BLK), and ground.

Is continuity present?

--

Go to Step 4

Go to Step 3

3

Repair the open in CKT 150 (BLK) between the left rear taillamp or the left rear park and turn signal lamp connector cavity G and ground G400.

Is the left rear taillamp or the rear park and turn signal lamp operative?

--

Go to Exterior Lights System Check

Go to Step 4

4

  1. Connect an unpowered test lamp between the left rear taillamp or the left rear park and turn signal lamp connector, cavity B for CKT 9 (BRN), and ground.
  2. Place the headlamp switch in the park lamps position.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

Replace the left rear taillamp or the left rear park and turn signal lamp bulb.

Is the left rear taillamp or the rear park and turn signal lamp operative?

--

Go to Exterior Lights System Check

Go to Step 6

6

Repair the open in CKT 9 (BRN) between splice S901 and the left rear taillamp or the left rear park and turn signal lamp connector.

Is the rear taillamp or the rear park and turn signal lamps operative?

--

Go to Exterior Lights System Check

--