GM Service Manual Online
For 1990-2009 cars only

Engine Oil Pressure Gauge Always High V8 Vin G

Step

Action

Value(s)

Yes

No

Important: Inspect for proper oil level, then inspect oil pressure with a mechanical gauge before proceeding. Refer to Engine Mechanical Specifications in Engine Mechanical.

1

  1. Turn the ignition switch to the RUN position with the engine OFF.
  2. Disconnect the oil pressure sensor connector.
  3. Connect a jumper between terminal A of the connector and ground.

Does the gauge move back to the left (low pressure)?

--

Go to Step 2

Go to Step 4

2

Inspect the oil pressure sensor connector for a poor connection.

Did you repair a poor connection?

--

Go to Instrument Cluster System Check

Go to Step 3

3

Replace the oil pressure sensor.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

4

Inspect CKT 31 for a poor connection or open.

Did you repair a poor connection or open?

--

Go to Instrument Cluster System Check

Go to Step 5

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--