GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Instrument Cluster Schematics

1

Did you perform the IPC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

  1. Turn ON the ignition, with the engine OFF.
  2. Install a scan tool.
  3. With a scan tool, perform the Tach Gage Sweep Test.

Does the tachometer move from 0 RPM to 7000 RPM and back to 0 RPM when you sweep this gage up and down?

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

Go to Step 3

3

Important: Perform the compass calibration and variance procedure on the replacement IPC.

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 4

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4

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2