GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Inspect the engine oil level.

Is the engine oil level at the FULL mark on the dipstick?

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Go to Step 3

Go to Step 2

2

  1. Fill the engine oil level to the full mark on the dip stick.
  2. Turn the ignition switch to the RUN position.

Does the low oil indicator illuminate for approximately 3 seconds and turn off?

--

System OK

Go to Step 3

3

Inspect for powertrain control module (PCM) DTCs.

Are any PCM DTCs set?

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Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 2.5L (LB8) and 3.0L (L46)

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 low oil indicator turn off?

--

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 2.5L (LB8) and 3.0L (L46)

Go to Step 5

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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