GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Instrument Cluster Schematics or Release Systems Schematics

Connector End View Reference: Displays and Gages Connector End Views

1

Did you review the Luggage Compartment Description and Operation, and perform the necessary inspections?

Go to Step 2

Go to Luggage Compartment Description and Operation

2

Open the rear compartment.

Does the trunk ajar message/indicator illuminate?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Disconnect the rear compartment lid latch.
  2. Connect a fused jumper wire between the rear compartment lid ajar switch signal circuit and a good ground.

Does the trunk ajar message/indicator illuminate?

Go to Step 4

Go to Step 5

4

Connect a fused jumper between the rear compartment lid ajar switch signal circuit and the rear compartment lid ajar switch ground circuit.

Does the trunk ajar message/indicator illuminate?

Go to Step 7

Go to Step 6

5

Test for an open or high resistance in the signal circuit of the rear compartment lid latch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

6

Test for an open or high resistance in the ground circuit of the rear compartment lid latch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 10

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7

Inspect for poor connections at the harness connector of the rear compartment lid latch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 8

8

Replace the rear compartment lid latch. Refer to Rear Compartment Lid Latch Replacement .

Did you find and correct the condition?

Go to Step 10

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9

Replace the instrument panel cluster (IPC). Refer to Control Module References for the IPC replacement, setup, and programming.

Did you find and correct the condition?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2