Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2002EXPRESS 1 TON VAN V8-8.1L VIN GREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOIL PRESSURE SENSORSERVICE AND REPAIR
2002 Chevrolet Express 1 Ton Van V8-8.1L VIN G
Oil Pressure Sensor: Service and Repair
2002 Chevrolet Express 1 Ton Van V8-8.1L VIN GSECTION Service and Repair
Engine Oil Pressure Sensor and/or Switch Replacement
^ Tools Required
- J 25254-10 A Oil Pressure Sending Unit Socket
Removal Procedure
1. Remove the engine cover.
2. Disconnect the oil pressure sensor electrical connector (2).
3. Using J25254-10 A or equivalent, remove the oil pressure sensor.
Installation Procedure
1. If Installing the old sensor, apply sealant GM U.S. P/N 12346004, Canada P/N 10953480, or equivalent, to the threads.
Notice: Refer to Fastener Notice in Service Precautions.
2. Using J25254-10 A or equivalent, install the oil pressure sensor.
^ Tighten the oil pressure sensor to 30 Nm (22 ft. lbs.).
3. Connect the oil pressure sensor electrical connector (2).
4. Install the engine cover.
^ Tools Required
- J 25254-10 A Oil Pressure Sending Unit Socket
Removal Procedure
1. Remove the engine cover.
2. Disconnect the oil pressure sensor electrical connector (2).
3. Using J25254-10 A or equivalent, remove the oil pressure sensor.
Installation Procedure
1. If Installing the old sensor, apply sealant GM U.S. P/N 12346004, Canada P/N 10953480, or equivalent, to the threads.
Notice: Refer to Fastener Notice in Service Precautions.
2. Using J25254-10 A or equivalent, install the oil pressure sensor.
^ Tighten the oil pressure sensor to 30 Nm (22 ft. lbs.).
3. Connect the oil pressure sensor electrical connector (2).
4. Install the engine cover.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.