Camshaft Position Sensor Replacement for GMC Truck TopKick C-Series (Conventional) C4/C5 2004

1. Remove the cooling fan. Refer to Fan Replacement in Engine Cooling.



2. Disconnect the camshaft position (CMP) sensor connector (1).
3. Remove the cooling fan pulley (2). Refer to Cooling Fan Pulley Replacement in Engine Cooling.
4. Remove the CMP sensor retaining bolt.
5. Remove the CMP sensor.

1. Install the CMP sensor.

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 CMP sensor retaining bolt.

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




3. Install the cooling fan pulley (2). Refer to Cooling Fan Pulley Replacement in Engine Cooling.
4. Connect the CMP sensor connector (1).
5. Install the cooling fan and shroud. Refer to Fan Replacement in Engine Cooling.