GM Service Manual Online
For 1990-2009 cars only

Park Lamps Always On Buick

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

Disconnect the headlamp switch connector.

Do the park lamps go out?

--

Go to Step 7

Go to Step 3

3

Disconnect the remote function actuator (RFA) module connector (with AU0).

Do the park lamps go out?

--

Go to Step 8

Go to Step 4

4

Disconnect the lamp control module (LCM) connector C1.

Do the park lamps go out?

--

Go to Step 9

Go to Step 5

5

Remove the PARK LP fuse 8C from the IP fuse block.

Do the park lamps go out?

--

Go to Step 12

Go to Step 6

6

Repair the short to battery positive voltage (B+) in CKT 9 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

7

Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Exterior Lights System Check

--

8

Replace the RFA module. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Inspect for a short to ground in CKT 308 (GRY/BLK). Refer to Testing for Short to Ground in Wiring Systems.

Is CKT 308 OK?

--

Go to Step 10

Go to Step 13

10

Inspect for a short to ground in CKT (624 (BLK/WHT). Refer to Testing for Short to Ground in Wiring Systems.

Is CKT 624 OK?

--

Go to Step 11

Go to Step 13

11

Replace the LCM.

Is the repair complete?

--

Go to Exterior Lights System Check

--

12

Repair the short to battery positive voltage (B+) in CKT 256 (PPL). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

13

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

Park Lamps Always On Oldsmobile

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

Disconnect the headlamp switch connector.

Do the park lamps go out?

--

Go to Step 8

Go to Step 3

3

Remove the park lamp relay position K from the RH IP fuse block.

Do the park lamps go out?

--

Go to Step 9

Go to Step 4

4

Disconnect the remote function actuator (RFA) module connector (with T2T).

Do the park lamps go out?

--

Go to Step 12

Go to Step 5

5

Disconnect the lamp control module (LCM) connector C1.

Do the park lamps go out?

--

Go to Step 11

Go to Step 6

6

Inspect for a short to ground in CKT 624 (BLK/WHT). Refer to Testing for Continuity in Wiring Systems.

Is CKT 624 OK?

--

Go to Step 7

Go to Step 13

7

Repair the short to battery positive voltage (B+) in CKT 9 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

8

Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Inspect for a short to battery positive voltage (B+) in CKT 74 (LT BLU). Refer to Testing for Continuity in Wiring Systems.

Is CKT 74 OK?

--

Go to Step 10

Go to Step 13

10

Replace the park lamp relay position K in the RH IP fuse block.

Is the repair complete?

--

Go to Exterior Lights System Check

--

11

Replace the LCM.

Is the repair complete?

--

Go to Exterior Lights System Check

--

12

Replace the RFA module. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Exterior Lights System Check

--

13

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

Park Lamps Always On Pontiac

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

Disconnect the headlamp switch connector.

Do the park lamps go out?

--

Go to Step 7

Go to Step 3

3

Disconnect the remote function actuator (RFA) module connector (with AU0).

Do the park lamps go out?

--

Go to Step 9

Go to Step 4

4

Disconnect the lamp control module (LCM) connector C1.

Do the park lamps go out?

--

Go to Step 8

Go to Step 5

5

Inspect for a short to ground in CKT 624 (BLK/WHT). Refer to Testing for Short to Ground in Wiring Systems.

Is CKT 624 OK?

--

Go to Step 6

Go to Step 10

6

Repair the short to battery positive voltage (B+) in CKT 9 (BRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--

7

Replace the headlamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Exterior Lights System Check

--

8

Replace the LCM.

Is the repair complete?

--

Go to Exterior Lights System Check

--

9

Replace the RFA module. Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry.

Is the repair complete?

--

Go to Exterior Lights System Check

--

10

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

--