GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Savana 🢒 Engine 🢒 Engine Controls - 6.5L 🢒 Crankshaft Position Sensor Replacement

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

    2. Object Number: 72319 Size: SH
  2. Remove the harness connector from the crankshaft position sensor by releasing the locking tab.

    3. Object Number: 72320 Size: SH
  3. Remove the sensor mounting bolt.

    4. Object Number: 72321 Size: SH
  4. Remove the sensor from the engine.

    5. Important: Take care when handling the sensor. Damage to the sensor will affect the operation of the injection timing control system.

Installation Procedure
  1. Lube the new O-ring with engine oil.

    2. Object Number: 72321 Size: SH

    Important: Take care when handling the sensor. Damage to the sensor will affect the operation of the injection timing control system.

  2. Install the sensor in the engine.

    3. 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.


    Object Number: 72320 Size: SH
  3. Install the sensor mounting bolt.

    4. Tighten
    Tighten the mounting bolt to 25 N·m (17 lb ft).


    Object Number: 72319 Size: SH
  4. Install the sensor harness connector.

    5. Important: Ensure that the PCM electrical harness is properly routed to avoid contact with the engine cover during installation.

  5. Install the engine cover. Refer to Engine Cover Installation in Interior Trim.
  6. Connect the negative battery cables.
  7. Refer to PCM Programming (TDC Offset). This procedure must be done when a crankshaft position sensor is replaced.