GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Body Rear End Schematics

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 indicator illuminate?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

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 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 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 in Wiring Systems.

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 in Wiring Systems.

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 in Wiring Systems.

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 driver information center (DIC). Refer to Control Module References in Computer/Integrating Systems for 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