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Home >> Chevrolet >> 2001 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L - Repair Instructions >> Repair Instructions >> Crankshaft Position Sensor Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Crankshaft Position Sensor
    GM470801Courtesy of GENERAL MOTORS COMPANY
  1. If reusing the old sensor, Inspect the O-rings for cuts, cracks, tears or damage, replace as needed.
  2. Lubricate the CKP sensor O-rings with clean engine oil.
    IMPORTANT:

    Ensure that the CKP sensor is fully seated against the crankshaft reluctor ring. The upper flange on the sensor MAY NOT seat against the engine block.

  3. Install the CKP sensor.
  4. IMPORTANT:

    The CKP sensor bolt has adhesive applied to the threads. The adhesive may have come off during removal of the bolt. Ensure that the bolt hole is clean of any debris before installing the reinstalling bolt.

  5. If reusing the old sensor, apply thread adhesive GM P/N United States 12345493, GM P/N Canada 10953488, or equivalent to the bolt threads.

    Refer to FASTENER NOTICE in Cautions and Notices.

  6. Install the CKP sensor bolt.

    Tighten 

    Tighten the bolt to 12 N.m (106 lb in).

  7. Fig 2: View Of Crankshaft Position Sensor Harness Connector
    GM674728Courtesy of GENERAL MOTORS COMPANY
  8. Connect the CKP sensor electrical connector.
  9. Position the coil to the rocker cover.
  10. Install the driver side rear ignition coil bolts.

    Tighten 

    Tighten the bolts to 12 N.m (106 lb in).

  11. Fig 3: View Of Rear Of Engine Fuel Pipe Connections
    GM300360Courtesy of GENERAL MOTORS COMPANY
  12. Raise the vehicle.
  13. Install the fuel line bracket to the bellhousing stud.
  14. Install the fuel line bracket nut (5).
  15. Lower the vehicle.
  16. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn .