GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Interior Lights Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

Open the instrument panel (I/P) compartment.

Does the instrument panel compartment lamp illuminate?

Go to Testing for Intermittent Conditions and Poor Connections

in Wiring Systems

Go to Step 3

3

Do the courtesy lamps operate properly?

Go to Step 4

Go to Courtesy Lamps Inoperative

4

  1. Disconnect the I/P compartment lamp switch.
  2. Probe the courtesy lamps supply voltage circuit of the I/P compartment lamp with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

Connect a test lamp between the courtesy lamps supply voltage circuit and the ground circuit of the I/P compartment lamp.

Does the test lamp illuminate?

Go to Step 6

Go to Step 8

6

Inspect for poor connections at the harness connector of the I/P 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 10

Go to Step 9

7

Repair an open or high resistance in the courtesy lamps supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 10

--

8

Repair an open or high resistance in the ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 10

--

9

Replace the I/P compartment lamp switch. Refer to Instrument Panel Storage Compartment Lamp Replacement .

Did you complete the replacement?

Go to Step 10

--

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3