GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the 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 panel (IP) compartment lamp switch connector.
  2. Turn the ignition switch to the RUN position.
  3. Connect a fused jumper between the IP compartment lamp switch connector terminal B (BLK) and ground.

Does the IP compartment lamp light?

--

Go to Step 3

Go to Step 4

3

Test CKT 150 (BLK) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 150 OK?

--

Go to Step 8

Go to Step 7

4

Test CKT 39 (PNK) for an open or a short to ground between S215 and the IP compartment lamp. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems.

Is CKT 39 OK?

--

Go to Step 5

Go to Step 7

5

Test CKT 157 (GRY) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 157 OK?

--

Go to Step 6

Go to Step 7

6

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

Is the repair complete?

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Go to Interior Lights Dimming System Check

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7

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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8

Replace the IP compartment lamp switch.

Is the repair complete?

--

Go to Interior Lights Dimming System Check

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