GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Was the Interior Lights System Check performed?

--

Go to Step 2

Go to Interior Lamps System Check

2

Backprobe the luggage compartment lamp connector with a test light from cavity 1 to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 5

3

Test for an open in the BLK/YEL wire between the luggage compartment lamp and the luggage compartment lamp switch.

Was an open found?

--

Go to Step 7

Go to Step 4

4

Replace the luggage-compartment lamp switch.

Refer to Liftgate Lock System Replacement (2-Door) or Lock System Replacement - Rear Compartment (4-Door) in Body Rear End.

Is the repair complete?

--

Go to Interior Lamps System Check

--

5

Test for an open in the WHT wire between the junction block and the luggage compartment lamp.

Was an open found?

--

Go to Step 7

Go to Step 6

6

Replace the junction block.

Is the repair complete?

--

Go to Interior Lamps System Check

--

7

Repair the open. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lamps System Check

--