GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the entire Interior Lights Dimming System Check?

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Go to Step 2

Go to Interior Lights Dimming System Check

2

  1. Disconnect the instrument cluster connector C1.
  2. Connect a J 39200 digital multimeter (DMM) from the instrument cluster connector C1 cavity A3 (PNK) to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 5

3

Connect a DMM from the instrument cluster connector C1 cavity A4 (LT GRN) to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 4

Go to Step 6

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Is the instrument cluster replacement complete?

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Go to Interior Lights Dimming System Check

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5

Repair the open in CKT 1039 (PNK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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6

Repair the open in CKT 147 (LT GRN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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