GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

  1. Turn the ignition ON, with the engine OFF.
  2. Install a scan tool.
  3. With the scan tool, perform the Displays Test in the IPC scan tool Output Controls.

Does the gage move from 0 to its maximum value and back to 0 when you perform the Displays Test?

Go to Step 3

Go to Step 4

3

  1. Install a scan tool.
  2. Start the engine.
  3. With the scan tool, observe the Battery Voltage parameter in the BCM Data list.

Does the Battery Voltage parameter match the gage display?

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

Go to Step 4

4

Replace the instrument panel cluster (IPC). Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 5

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5

  1. Use the scan tool in order to clear any induced DTCs.
  2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2