GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

Measure the voltage to ground from the IP compartment lamp connector terminal A (ORN).

Is battery voltage measured?

--

Go to Step 3

Go to Step 5

3

Measure the voltage from the IP compartment lamp connector terminal A (ORN) to terminal B (BLK).

Is battery voltage measured?

--

Go to Step 4

Go to Step 6

4

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

Is the repair complete?

--

Go to Step 7

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5

Repair the open in CKT 640 (ORN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 7

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6

Repair the open in CKT 150 (BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 7

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7

Operate the system in order to verify the repair. Did you correct the condition?

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System OK.

Go to Step 2