GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Interior Lights System Check performed?

--

Go to Step 2

Go to Interior Lamps System Check

2

  1. Disconnect the left front door lock actuator connector C1.
  2. Connect a fused jumper between the left front door lock actuator connector C1 terminal A (TAN) and terminal D (BLK/WHT).

Do the courtesy lamps light?

--

Go to Step 3

Go to Step 4

3

Replace the left front door lock actuator. Refer to Door Lock Actuator Replacement in Doors.

Is the repair complete?

--

Go to Interior Lamps System Check

--

4

Connect a fused jumper from the left front door lock actuator connector C1 terminal A (TAN) to ground

Do the courtesy lamps light?

--

Go to Step 5

Go to Step 6

5

Repair the open in CKT 51 (BLK/WHT) between S201 and the left front door lock actuator. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--

6

Inspect CKT 126 (TAN) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 126 OK?

--

Go to Step 7

Go to Step 8

7

Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--

8

Repair the open in CKT 126 (TAN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

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