GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Interior Lights Schematics

1

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Disconnect the IP compartment lamp.
  2. Turn the ignition switch to the ON position.
  3. Probe the supply voltage circuit of the I/P compartment lamp connector with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 3

Go to Step 6

3

Probe the ground circuit of the I/P compartment lamp connector with a test lamp that is connected to B+.

Does the test lamp illuminate?

Go to Step 10

Go to Step 4

4

  1. Remove the IP compartment lamp switch. Refer to Instrument Panel Compartment Lamp Switch Replacement in Instrument Panel, Gauges and Console.
  2. Probe the ground circuit of the I/P compartment lamp switch connector with a test lamp that is connected to B+.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

  1. Install the IP compartment lamp.
  2. Connect a fused jumper between the I/P compartment switch ground circuit and the I/P compartment switch signal circuit of the IP compartment lamp switch connector.

Does the IP compartment lamp turn ON?

Go to Step 9

Go to Step 8

6

Repair an open or high resistance in the I/P compartment lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 11

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7

Repair an open or high resistance in the I/P compartment lamp switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 11

--

8

Repair an open or high resistance in the I/P compartment switch signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 11

--

9

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

Did you complete the repair?

Go to Step 11

--

10

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

Did you complete the repair?

Go to Step 11

--

11

  1. Connect all connectors and components that were previously disconnected.
  2. Verify that the IP compartment lamp operates properly.

Does the IP compartment lamp operate properly?

System OK

Go to Step 2