Important: In order to avoid misdiagnosis, check for proper engine oil pressure before performing this diagnosis. Refer to Oil Pressure Diagnosis and Testing (V8 VIN G) or Oil Pressure Diagnosis and Testing (V6 VIN K).

Does the oil pressure gage always read low pressure?

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Go to Engine Oil Pressure Gauge Always Low

Go to Step 2

1. Disconnect the oil pressure sensor.
2. Using IP tester J33431, connect one red lead to the sensor connector terminal A and connect the other red lead to ground.
3. Turn the ignition switch to the RUN position.
4. While observing the oil pressure gage, set the resistance dial on the tester to 0ohms, 40ohms, and 100ohms.

Does the oil pressure gage move from low pressure to approximately 30 psi, and then high pressure?

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Go to Step 3

Go to Step 4

1. Check for a poor connection at the oil pressure sensor.
2. If the connections are OK, replace the oil pressure sensor.

Is the repair complete?

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System OK

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1. Check for an open or poor connection in circuit 31 between the oil pressure sensor and the instrument cluster.
2. If circuit 31 is OK, replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

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System OK

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