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 MANUALSCHEVROLET2004AVALANCHE 2500 2WD V8-8.1L VIN GREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOIL PRESSURE SENSORSERVICE AND REPAIR
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN G
Oil Pressure Sensor: Service and Repair
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN GSECTION Service and Repair
Engine Oil Pressure Sensor and/or Switch Replacement
Tools Required
- J41712 Oil Pressure Sensor Socket
Removal Procedure
1. Remove the engine sight shield.
2. Disconnect the oil pressure sensor electrical connector (2).
3. Using J41712 or equivalent, remove the oil pressure sensor.
Installation Procedure
1. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent, to the threads of the oil pressure sensor.
Notice: Refer to Fastener Notice in Service Precautions.
2. Using J41712 or equivalent, install the oil pressure sensor.
Tighten the sensor to 30 Nm (22 ft. lbs.).
3. Connect the oil pressure sensor electrical connector (2).
4. Install the engine sight shield.
Tools Required
- J41712 Oil Pressure Sensor Socket
Removal Procedure
1. Remove the engine sight shield.
2. Disconnect the oil pressure sensor electrical connector (2).
3. Using J41712 or equivalent, remove the oil pressure sensor.
Installation Procedure
1. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent, to the threads of the oil pressure sensor.
Notice: Refer to Fastener Notice in Service Precautions.
2. Using J41712 or equivalent, install the oil pressure sensor.
Tighten the sensor to 30 Nm (22 ft. lbs.).
3. Connect the oil pressure sensor electrical connector (2).
4. Install the engine sight shield.
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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.