GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Check the engine oil level.

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

--

Go to Step 3

Go to Step 2

2

  1. Fill the engine oil level to the full mark on the dip stick.
  2. Start the engine.

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

--

System OK

Go to Step 3

3

Did you perform the Instrument Cluster Diagnostic System Check?

--

Go to Step 4

Go to Diagnostic System Check - Instrument Cluster

4

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool observe the Oil Pressure Lamp output in the IPC data list.

Does the scan tool indicate that the oil pressure lamp is ON?

--

Go to Step 5

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls-3.8L

5

Replace the instrument panel cluster. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

--

System OK

--