GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value

Yes

No

Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Turn the ignition ON, with the engine OFF.
  2. Press and release the Eng/Met button.

Does the MPH indicator and then the km/h indicator illuminate after each button activation?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Install a scan tool.
  2. With a scan tool, observe the English/Metric Status parameter in the IPC data list.
  3. Press the Eng/Met button.

Does the English/Metric Status parameter display Active?

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Go to Step 4

Go to Step  5

4

Replace the instrument panel cluster (IPC). Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you find and correct the condition?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2