GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Body Rear End

2

Disconnect the liftgate door lock (ajar indicator switch).

Does the REAR HATCH AJAR message turn off on the IP reconfigurable telltale?

Go to Step 3

Go to Step 4

3

Replace the liftgate door lock (ajar indicator switch). Refer to Liftgate Latch Replacement .

Is the repair complete?

Go to Step 6

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4

Test the signal circuit of the trunk ajar switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Important: Perform the set up procedure for the IP.

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement and the set up procedure?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2