Crankshaft Position Sensor Replacement 7X

1. Remove the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Turn the steering wheel fully to the left.
3. Raise vehicle on hoist. Refer to Lifting and Jacking the Vehicle in General information.
4. Disconnect the electrical connector.
5. Remove the retaining bolt.
6. Remove the sensor from the engine.
7. If the sensor is not being replaced inspect for the following:

7.1.	Inspect the sensor for wear, cracks, or leakage. Replace the O-ring if necessary.

7.2.	Lubricate the new O-ring with clean engine oil before installing.

1. Install the sensor into the block.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Reinstall the retainer bolt to hold sensor to block face.

Tighten
Tighten the bolt to 8 N·m (71 lb in).

3. Connect the electrical connector.
4. Lower the vehicle.
5. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Crankshaft Position Sensor Replacement 24X

1. Turn OFF the ignition.
2. Remove the serpentine drive belt from crankshaft pulley. Refer to Water Pump Removal in Engine Mechanical.
3. Raise the vehicle on hoist. Refer to Lifting and Jacking the Vehicle in general information.
4. Remove the crankshaft harmonic balancer retaining bolt. Refer to Crankshaft Balancer Removal in Engine Mechanical.
5. Remove the crankshaft harmonic balancer. Refer to Drive Belt Tensioner Removal in Engine Mechanical.
6. Note the routing of sensor harness before removal.
7. Remove the harness retaining clip with bolt (1).
8. Disconnect the sensor electrical connector.
9. Remove the sensor bolts (2).
10. Remove the sensor.

1. Install the 24X Crankshaft Position Sensor with bolts (2) and route harness as noted during removal.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the harness retaining clip with bolt (1).

Tighten
Tighten the bolts to 10 N·m (8 lb ft).

3. Connect the sensor electrical connector.
4. Install the balancer on the crankshaft. Refer to Drive Belt Tensioner Removal in Engine Mechanical.
5. Apply thread sealer GM #1052080 or equivalent to threads of the crankshaft harmonic balancer bolt.

Tighten
Tighten the bolt to 150 N·m  (110 lb ft).

6. Lower vehicle.
7. Reinstall the serpentine drive belt. Refer to Drive Belt Tensioner Removal in Engine Mechanical.
8. Perform the Crankshaft Position System Variation Learn .