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 MANUALSCHEVROLET2001EXPRESS 1/2 TON VAN V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCRANKSHAFT POSITION SENSORSERVICE AND REPAIR
2001 Chevrolet Express 1/2 Ton Van V6-4.3L VIN W
Crankshaft Position Sensor: Service and Repair
2001 Chevrolet Express 1/2 Ton Van V6-4.3L VIN WSECTION Service and Repair
REMOVAL PROCEDURE
IMPORTANT: Perform the CKP system variation learn procedure whenever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure.
1. Raise the vehicle.
2. If the vehicle is equipped with the underbody shield package, remove the mounting bolts for the steering linkage shield.
3. Remove the steering linkage shield.
4. Disconnect the CKP sensor harness connector.
5. Remove the CKP sensor mounting bolt.
6. Remove the CKP sensor.
INSTALLATION PROCEDURE
IMPORTANT:
^ When installing the CKP sensor, make sure the sensor is fully seated before tightening the mounting bolt. A poorly seated CKP sensor may perform erratically and may set false DTCs.
^ Do not use the original O-ring.
1. Replace the CKP sensor O-ring.
2. Lubricate the O-ring with clean engine oil before installing the CKP sensor.
IMPORTANT: Make sure the CKP sensor mounting surface is clean and free of burrs.
3. Install the CKP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the CKP sensor mounting bolt.
Tighten
Tighten the mounting bolt to 8 N.m (71 lb in).
5. Connect the CKP sensor harness connector.
6. Install the steering linkage shield.
7. Install the mounting bolts for the steering linkage shield.
Tighten
Tighten the bolts to 33 N.m (24 lb ft).
8. Lower the vehicle.
9. Perform the CKP system variation learn procedure.Refer to CKP System Variation Learn Procedure. Programming and Relearning
IMPORTANT: Perform the CKP system variation learn procedure whenever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure.
1. Raise the vehicle.
2. If the vehicle is equipped with the underbody shield package, remove the mounting bolts for the steering linkage shield.
3. Remove the steering linkage shield.
4. Disconnect the CKP sensor harness connector.
5. Remove the CKP sensor mounting bolt.
6. Remove the CKP sensor.
INSTALLATION PROCEDURE
IMPORTANT:
^ When installing the CKP sensor, make sure the sensor is fully seated before tightening the mounting bolt. A poorly seated CKP sensor may perform erratically and may set false DTCs.
^ Do not use the original O-ring.
1. Replace the CKP sensor O-ring.
2. Lubricate the O-ring with clean engine oil before installing the CKP sensor.
IMPORTANT: Make sure the CKP sensor mounting surface is clean and free of burrs.
3. Install the CKP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the CKP sensor mounting bolt.
Tighten
Tighten the mounting bolt to 8 N.m (71 lb in).
5. Connect the CKP sensor harness connector.
6. Install the steering linkage shield.
7. Install the mounting bolts for the steering linkage shield.
Tighten
Tighten the bolts to 33 N.m (24 lb ft).
8. Lower the vehicle.
9. Perform the CKP system variation learn procedure.Refer to CKP System Variation Learn Procedure. Programming and Relearning
RENDER: 1.0x
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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.