GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Turn the ignition to the RUN position.

Does the CHANGE ENGINE OIL indicator turn off after the bulb test?

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

Go to Step 3

3

  1. Turn the ignition switch to the RUN position with the engine off.
  2. Press and hold the odometer trip reset button for approximately 12 seconds.

Does the change oil indicator flash twice and then turn off?

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Go to Step 6

Go to Step 4

4

  1. Connect a scan tool to the vehicle data link connector (DLC).
  2. Enter the instrument cluster WOW mode.
  3. Command the instrument cluster indicators off.

Does the change oil indicator turn off?

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Go to Step 6

Go to Step 5

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

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Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK