GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to RUN.
  2. Connect a scan tool.
  3. Select the instrument cluster Data Menu.
  4. View the coolant temperature input data on the scan tool.

Does the coolant temperature input data on the scan tool match the coolant temperature on the instrument cluster?

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Go to Engine Controls

Go to Step 2

2

Replace the instrument cluster.

Is the repair complete?

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Go to Diagnostic System Check - Instrument Cluster

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