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 entire Exterior Lights System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Cover the sunload sensor assembly.
  2. Turn ON the courtesy lamps.
  3. Open and close the I/P compartment.
  4. Observe the I/P compartment lamp.

Does the I/P compartment lamp operate properly?

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

Go to Step 3

3

Disconnect the I/P compartment lamp switch.

Did the I/P compartment lamp turn OFF?

Go to Step 4

Go to Step 5

4

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 7

Go to Step 6

5

Repair short to ground in the glove box lamp supply voltage circuit of the I/P compartment switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 7

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6

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

Is the switch replacement complete?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2