Removal & Installation (8.1L)
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Use care when removing/installing Crankshaft Position (CKP) sensor so as not to damage CKP sensor reluctor wheel/ring.
- Raise and support vehicle. Remove fuel line bracket retaining nut, attached to top left bellhousing stud. See Fig 1. Remove fuel line bracket from bellhousing stud. Lower vehicle.
- Remove driver side rear ignition coil bolts. Reposition driver side rear ignition coil for access to CKP sensor. Disconnect CKP sensor harness connector. Spray penetrating oil around CKP sensor and allow it to soak in before attempting removal from engine block.
- Remove CKP sensor retaining bolt. See Fig 2. Twist CKP sensor back and forth several times prior to removal from engine block. Remove CKP sensor.
- Inspect CKP sensor for wear. CKP sensor is designed to contact reluctor wheel of crankshaft. Wear toward outside edges of CKP sensor tip is normal. Wear should not be visible toward center of CKP sensor tip. Replace CKP sensor as necessary. Inspect CKP sensor "O" ring for wear or damage. Replace as necessary. Lubricate CKP sensor "O" ring with clean engine oil.
- Clean CKP sensor retaining bolt hole of any debris. Install CKP sensor into engine block. Ensure CKP sensor is fully seated against crankshaft reluctor ring. Upper flange on CKP sensor MAY NOT seat against engine block.
- Apply Thread Adhesive (12345493) to CKP sensor retaining bolt threads. Install CKP sensor retaining bolt and tighten to specification. See TORQUE SPECIFICATIONS . To complete installation, reverse removal procedure.