GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the entire Interior Lights System Check performed?

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Go to Step 2

Go to Interior Lamps System Check

2

  1. Disconnect the suspect door lock actuator C1.
  2. Connect a fused jumper between the following appropriate door lock actuator connector cavities:
  3. • LH front: cavities A (TAN) and D (BLK)
    • RH front: cavities D (BLK) and A (TAN)
    • LH rear: cavities A (LT BLU) and D (BLK)
    • RH rear: cavities D (DK BLU) (Buick) or D (LT BLU) (Oldsmobile/Pontiac) and A (BLK/WHT)

Do all of the courtesy lamps turn on?

--

Go to Step 3

Go to Step 4

3

Replace the suspect door lock actuator.

Is the door lock actuator replacement complete?

--

Go to Interior Lamps System Check

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4

Inspect the following circuits for an open:

    • LH front: CKT 126 (TAN)
    • RH front: CKT 49 (BLK)
    • LH rear: CKT 49 (LT BLU)
    • RH rear: CKT 49 (DK BLU) (Buick) or (LT BLU) (Oldsmobile/Pontiac)

Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 5

Go to Step 6

5

Repair the faulty circuit. Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

6

Inspect the following circuits for an open:

    • LH front: CKT 1250 (BLK)
    • RH front: CKT 1250 (TAN)
    • LH rear: CKT 1250 (BLK)
    • RH rear: CKT 1250 (BLK/WHT)

Refer to Testing for Continuity in Wiring Systems.

Was an open found?

--

Go to Step 7

Go to Step 8

7

Repair the open in CKT 1250 (BLK). Refer to Wiring Repairs in Wiring Systems.

Is the circuit repair complete?

--

Go to Interior Lamps System Check

--

8

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

Is the MALL Module replacement complete?

--

Go to Interior Lamps System Check

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