GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Interior Lights Schematics

1

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

2

Open the IP compartment.

Does the lamp turn ON?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Turn ON the ignition, with the engine OFF.
  2. Disconnect the IP compartment lamp.
  3. Connect a test lamp to a good ground.
  4. Probe the IP compartment courtesy lamps supply voltage circuit with the test lamp.

Does the test lamp illuminate?

Go to Step 4

Go to Step 6

4

Connect a test lamp between the IP compartment courtesy lamps supply voltage circuit and the IP compartment lamp ground circuit.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

Inspect for poor connections at the harness connector of the IP compartment lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

6

Repair the open in the IP compartment courtesy lamps supply voltage circuit . Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

--

7

Repair the open in the IP compartment lamp ground circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 9

--

8

Replace the IP compartment lamp switch. Refer to Instrument Panel Compartment Lamp Switch Replacement in Instrument Panel, Gages and Console.

Did you complete the replacement?

Go to Step 9

--

9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2