GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2

Disconnect the oil pressure switch connector.

Does the oil pressure indicator remain lit?

--

Go to Step 3

Go to Step 4

3

Repair the short to ground in the YEL/BLK wire or the instrument panel cluster printed circuit.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

4

Test the oil pressure with a mechanical gauge.

Is the oil pressure normal?

--

Go to Step 5

Go to Engine Mechanical

5

Replace the oil pressure switch.

Is the repair complete?

--

Go to Instrument Cluster System Check

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