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 MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCRANKSHAFT POSITION SENSORSERVICE AND REPAIR
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Crankshaft Position Sensor: Service and Repair
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Service and Repair
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
IMPORTANT: The CKP System Variation Learn Procedure will need to be performed whenever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure.
1. Disconnect the negative battery cable.
2. Disconnect the CKP sensor harness connector.
3. Remove the CKP sensor mounting bolt.
4. Remove the CKP sensor.
INSTALLATION PROCEDURE
IMPORTANT:
^ Make certain that the CKP sensor mounting surfaces are clean and free of burrs before installing the new CKP sensor.
When installing the CKP sensor make sure the sensor is fully seated and held stationary in the front cover before torquing the hold down bolt into the front cover. A CKP sensor which is not seated may result in erratic operation and lead to the setting of false codes.
^ Inspect the sensor O-ring for wear, cracks or leakage.
1. Install the CKP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the mounting bolt.
Tighten
Tighten the bolt to 20 N.m (15 lb ft).
3. Connect the CKP sensor connector.
4. Connect the negative battery cable.
5. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure. Testing and Inspection
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
IMPORTANT: The CKP System Variation Learn Procedure will need to be performed whenever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure.
1. Disconnect the negative battery cable.
2. Disconnect the CKP sensor harness connector.
3. Remove the CKP sensor mounting bolt.
4. Remove the CKP sensor.
INSTALLATION PROCEDURE
IMPORTANT:
^ Make certain that the CKP sensor mounting surfaces are clean and free of burrs before installing the new CKP sensor.
When installing the CKP sensor make sure the sensor is fully seated and held stationary in the front cover before torquing the hold down bolt into the front cover. A CKP sensor which is not seated may result in erratic operation and lead to the setting of false codes.
^ Inspect the sensor O-ring for wear, cracks or leakage.
1. Install the CKP sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the mounting bolt.
Tighten
Tighten the bolt to 20 N.m (15 lb ft).
3. Connect the CKP sensor connector.
4. Connect the negative battery cable.
5. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure. Testing and Inspection
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.