GM Service Manual Online
For 1990-2009 cars only

Circuit Description

The instrument panel cluster (IPC) performs a diagnostic self-test when the ignition switch is turned on. If the IPC senses a malfunction, this DTC will be stored.

Conditions for Running the DTC

The ignition switch is turned on.

Conditions for Setting the DTC

Any of the following conditions will set this DTC:

    • The IPC part number does not match the part number stored in the body control module (BCM) memory.
    • The IPC make (pontiac, chevrolet) does not match the make stored in the BCM memory.
    • The IPC vehicle identification number (VIN) does not match the VIN stored in the BCM memory.

Action Taken When the DTC Sets

The SERVICE VEHICLE SOON indicator will illuminate if possible.

Conditions for Clearing the DTC

    • A current DTC B1001 will clear when a properly operating IPC is installed.
    • A history DTC will clear if the condition is no longer present after 100 ignition cycles with no current DTCs within the 100 ignition cycles.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. If DTC B1001 is set as current, replace the instrument cluster.

Step

Action

Yes

No

1

Did you perform the Instrument Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Perform the setup procedure for the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Does the DTC reset?

Go to Step 3

System OK

3

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Did you complete the procedure?

System OK

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