GM Service Manual Online
For 1990-2009 cars only

Park Lamps Inoperative Chevolet Domestic, Gulf, Pontiac

Step

Action

Yes

No

Schematic Reference: Exterior Lights Schematics

DEFINITION: The park lamps are inoperative from the headlamp switch.

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

  1. Turn the ignition to the OFF position.
  2. Place the headlamp switch in the PARK position.

Do all the park lamps illuminate?

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

Go to Step 3

3

Are all of the park lamps inoperative?

Go to Step 6

Go to Step 4

4

  1. Disconnect the inoperative park lamp connector.
  2. Place the headlamp switch in the PARK position.
  3. Probe the supply voltage circuit of the inoperative park lamp with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 13

5

Probe between the ground circuit and the supply voltage circuit of the inoperative park lamp with a test lamp.

Does the test lamp illuminate?

Go to Step 10

Go to Step 14

6

  1. Disconnect the headlamp switch connector.
  2. Probe the battery positive voltage circuit of the headlamp switch connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 7

Go to Step 8

7

Connect a fused jumper wire between the battery positive voltage circuit and the park lamp supply voltage circuit of the headlamp switch connector. Refer to Circuit Testing in Wiring Systems.

Do the park lamps illuminate?

Go to Step 9

Go to Step 11

8

Test for an open or high resistance in the battery positive voltage circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 17

Go to Step 12

9

Inspect for poor connections at the harness connector of the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 15

10

Inspect for poor connections at the harness connector of the inoperative park lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 16

11

Repair an open or high resistance in the park lamp supply voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

12

Repair a short to ground in the battery positive voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

13

Repair an open or high resistance in the park lamp supply voltage circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

14

Repair an open or high resistance in the ground circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 17

--

15

Replace the headlamp switch. Refer to Headlamp Switch Replacement .

Did you complete the replacement?

Go to Step 17

--

16

Replace the inoperative park lamp. Refer to the appropriate procedure.

Did you complete the replacement?

Go to Step 17

--

17

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2

Park Lamps Inoperative Japan

Step

Action

Yes

No

Schematic Reference: Exterior Lights Schematics

DEFINITION: The park lamps are inoperative from the headlamp switch.

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

  1. Turn the ignition to the OFF position.
  2. Place the headlamp switch in the PARK position.

Do the all the park lamps illuminate?

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

Go to Step 3

3

Are all the park lamps inoperative?

Go to Step 9

Go to Step 4

4

Are the front park lamps inoperative?

Go to Step 5

Go to Step 7

5

Are the both front park lamps inoperative?

Go to Step 10

Go to Step 6

6

  1. Disconnect the inoperative front park lamp connector.
  2. Place the headlamp switch in the PARK position.
  3. Probe the supply voltage circuit of the inoperative front park lamp with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 12

7

  1. Disconnect the inoperative park lamp connector.
  2. Place the headlamp switch in the PARK position.
  3. Probe the supply voltage circuit of the inoperative park lamp with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 19

8

Probe between the ground circuit and the supply voltage circuit of the inoperative park lamp with a test lamp.

Does the test lamp illuminate?

Go to Step 16

Go to Step 20

9

  1. Disconnect the headlamp switch connector.
  2. Probe the battery positive voltage circuit of the headlamp switch connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 13

10

  1. Place the headlamp switch in the PARK position.
  2. Connect a test lamp to ground.
  3. Backprobe the park lamp supply voltage circuit of the female C216 connector that feeds the turn signal switch .

Does the test lamp illuminate?

Go to Step 14

Go to Step 21

11

Connect a fused jumper wire between the battery positive voltage circuit and the park lamp supply voltage circuit of the headlamp switch connector. Refer to Circuit Testing in Wiring Systems.

Do the park lamps illuminate?

Go to Step 15

Go to Step 17

12

Test for an open or high resistance in the park lamp supply voltage circuit of the inoperative front park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 25

Go to Step 14

13

Test for an open or high resistance in the battery positive voltage circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 25

Go to Step 18

14

Inspect for poor connections at the harness connector of the turn signal switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 25

Go to Step 22

15

Inspect for poor connections at the harness connector of the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 25

Go to Step 23

16

Inspect for poor connections at the harness connector of the inoperative park lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 25

Go to Step 24

17

Repair an open or high resistance in the park lamp supply voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

18

Repair a short to ground in the battery positive voltage circuit or the parklamps supply voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

19

Repair an open or high resistance in the park lamp supply voltage circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

20

Repair an open or high resistance in the ground circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

21

Repair an open or high resistance in the park lamp supply voltage circuit that feeds the turn signal switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

22

Replace the turn signal switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Did you complete the replacement?

Go to Step 25

--

23

Replace the headlamp switch. Refer to Headlamp Switch Replacement in Steering Wheel and Column.

Did you complete the replacement?

Go to Step 25

--

24

Replace the inoperative park lamp. Refer to the appropriate procedure.

Did you complete the replacement?

Go to Step 25

--

25

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2

Park Lamps Inoperative Europe, Scandanavia

Step

Action

Yes

No

Schematic Reference: Exterior Lights Schematics

DEFINITION: The park lamps are inoperative from the headlamp switch.

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

  1. Turn the ignition to the OFF position.
  2. Place the headlamp switch in the PARK position.

Do the all the park lamps illuminate?

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

Go to Step 3

3

Are all the park lamps inoperative?

Go to Step 10

Go to Step 4

4

Is only one park lamp inoperative?

Go to Step 8

Go to Step 5

5

Are all of the following park lamps inoperative?

    • All the tail lamps
    • All the license lamps

Go to Step 20

Go to Step 6

6

Are all of the following park lamps inoperative?

    • Both of the RH tail lamps
    • All the license lamps

Go to Step 21

Go to Step 7

7

Are the both tail lamps inoperative on one side?

Go to Step 12

Go to Step 8

8

  1. Disconnect the inoperative park lamp connector.
  2. Place the headlamp switch in the PARK position.
  3. Probe the supply voltage circuit of the inoperative front park lamp with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 9

Go to Step 16

9

Probe between the ground circuit and the supply voltage circuit of the inoperative park lamp with a test lamp.

Does the test lamp illuminate?

Go to Step 15

Go to Step 17

10

  1. Disconnect the headlamp switch connector.
  2. Probe the battery positive voltage circuit of the headlamp switch connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 13

11

Connect a fused jumper wire between the battery positive voltage circuit and the park lamp supply voltage circuit of the headlamp switch connector. Refer to Circuit Testing in Wiring Systems.

Do the park lamps illuminate?

Go to Step 14

Go to Step 19

12

Test for an open or high resistance in the park lamps supply voltage circuit of the inoperative tail lamps. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 25

Go to Step 22

13

Test for an open or high resistance in the battery positive voltage circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

Go to Step 25

Go to Step 18

14

Inspect for poor connections at the harness connector of the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 25

Go to Step 23

15

Inspect for poor connections at the harness connector of the inoperative park lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 25

Go to Step 24

16

Repair an open or high resistance in the park lamp supply voltage circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

17

Repair an open or high resistance in the ground circuit of the inoperative park lamp. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

18

Repair a short to ground in the battery positive voltage circuit or the park lamps supply voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

19

Repair an open or high resistance in the park lamp supply voltage circuit of the headlamp switch. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

20

Repair an open or high resistance in the park lamps supply voltage circuit that feeds the auxiliary tail lamp fuse holder - left. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

21

Repair an open or high resistance in the park lamps supply voltage circuit that feeds the auxiliary tail lamp fuse holder - right. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

22

Repair a short to ground in the park lamps supply voltage circuit of the inoperative tail lamps. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 25

--

23

Replace the headlamp switch. Refer to Headlamp Switch Replacement in Steering Wheel and Column.

Did you complete the replacement?

Go to Step 25

--

24

Replace the inoperative park lamp. Refer to the appropriate procedure.

Did you complete the replacement?

Go to Step 25

--

25

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2