GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition OFF.
  2. Connect a scan tool.
  3. Turn the ignition to the ON position.
  4. Using the scan tool, check for any DTCs in the body control module (BCM).

Does the scan tool show any DTCs?

--

Go to Diagnostic System Check - Body Control System in Body Control System

Go to Step 2

2

Do the courtesy lights function properly?

--

Go to Step 3

Go to Courtesy or Dome Lamps Inoperative

3

Remove and inspect the light bulb.

Is the filament open?

--

Go to Step 4

Go to Step 5

4

Replace the bulb as necessary. Refer to Instrument Panel Compartment Lamp Replacement

Is the repair complete?

--

System OK

--

5

Connect a test lamp from terminal A of the instrument panel (IP) compartment lamp to ground.

Does the test lamp light?

--

Go to Step 7

Go to Step 6

6

Locate and repair the open in CKT 1732 (ORN) between the IP compartment lamp and the mid bussed electrical center (MBEC).

Is the repair complete?

--

System OK

--

7

Connect a self powered test lamp from terminal B to ground.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

8

Replace the IP compartment lamp assembly. Refer to Instrument Panel Compartment Lamp Replacement .

Is the repair complete?

--

System OK

--

9

Locate and repair the open in CKT 2450 (BLK) between the IP compartment lamp and ground.

Is the repair complete?

--

System OK

--