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 dome lamp connector with a test lamp from cavity 2 to ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Replace the dome lamp assembly. Refer to Dome Lamp Replacement .

Is the repair complete?

--

Go to Interior Lamps System Check

--

4

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

Was an open found?

--

Go to Step 5

Go to Step 6

5

Replace the junction block.

Is the repair complete?

--

Go to Interior Lamps System Check

--

6

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

Is the repair complete?

--

Go to Interior Lamps System Check

--