GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Interior Lights System Check?

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Go to Step 2

Go to Interior Lamps System Check

2

  1. Disconnect the rear compartment lid latch switch connector.
  2. Connect a fused jumper from the rear compartment lid latch switch connector cavity B (ORN/BLK) to ground.

Does the rear compartment lamp turn on?

--

Go to Step 6

Go to Step 3

3

Test CKT 737 (ORN/BLK) between the rear compartment lamp and the rear compartment lid latch switch for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 737 OK?

--

Go to Step 4

Go to Step 8

4

Test CKT 1732 (ORN) between the rear fuse block and the rear compartment lamp for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 1732 OK?

--

Go to Step 5

Go to Step 8

5

Replace the rear compartment lamp. Refer to Rear Compartment Courtesy Lamp Replacement .

Is the repair complete?

--

Go to Interior Lamps System Check

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6

Test CKT 650 (BLK) between the rear compartment lamp switch and G400 for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 650 OK?

--

Go to Step 7

Go to Step 8

7

Replace the rear compartment lid latch switch.

Is the repair complete?

--

Go to Interior Lamps System Check

--

8

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

Is the repair complete?

--

Go to Interior Lamps System Check

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