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 SYSTEMSCAMSHAFT POSITION SENSORSERVICE AND REPAIR
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN G
Camshaft Position Sensor: Service and Repair
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN GSECTION Service and Repair
CAMSHAFT POSITION (CMP) SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the engine shield bolts and shield, if equipped.
3. Disconnect the camshaft position (CMP) sensor electrical connector (1).
4. Remove the CMP sensor bolt.
5. Remove the CMP sensor.
6. Inspect the CMP sensor for wear, cracks or leakage if the sensor is not being replaced.
INSTALLATION PROCEDURE
IMPORTANT: Inspect the CMP sensor O-ring for wear or damage. If a problem is found, replace the O-ring. Lubricate the new O-ring with engine oil before installing.
1. Install the CMP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the CMP sensor bolt.
Tighten the bolt to 12 N.m (106 lb in).
3. Connect the CMP sensor electrical connector (1).
4. Install the engine shield and bolts, if equipped.
Tighten the bolt to 20 N.m (15 lb ft).
5. Lower the vehicle.
RENDER: 1.0x
NO RELATED
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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.