GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Were you sent here from the Interior Light Dimming System Check?

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Go to Step 2

Go to Interior Lights Dimming System Check

2

Inspect the WHT/GRN wire between the IP lamp controller cavity 3 and junction block 3, C3 cavity 17 for an open or bad connections.

Did you find any opens or bad connections?

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Go to Step 3

Go to Step 5

3

Repair any opens and/or any bad connections in the WHT/GRN wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Interior Lights Dimming System Check

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4

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

Is the replacement complete?

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Go to Interior Lights Dimming System Check

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5

Inspect the GRN wire between the IP lamp controller cavity 1 and junction block 3, C4 cavity 7 for an open or bad connections.

Did you find any open or bad connections?

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Go to Step 6

Go to Step 4

6

Repair the open and or any bad connections in the GRN wire. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Interior Lights Dimming System Check

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