GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Instrument Cluster Diagnostic System Check performed?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

  1. Disconnect the engine oil level sensor connector.
  2. Drive the vehicle for approximately half a mile.

Is the indicator lamp ON?

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Go to Step 3

Go to Step 4

3

Replace the engine oil level sensor.

Is the replacement complete?

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Go to Step 5

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4

  1. Check for a short to ground in CKTs XU4 and XU600.
  2. If OK, replace the gauge cluster.

Is the repair or replacement complete?

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Go to Step 5

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5

  1. Connect all connectors and components that were removed in previous steps.
  2. Verify that the low engine oil level indicator operates properly.

Does the low engine oil level indicator operate properly?

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System OK

Go to Step 2