GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the air cleaner and the duct. Refer to Engine Controls.
  2. Remove the coolant recovery reservoir or the surge tank (Diesel).
  3. • For the reservoir, refer to Coolant Recovery Reservoir Replacement .
    • For the surge tank, refer to Surge Tank (Diesel) .
  4. Remove the upper radiator shroud.

  5. Object Number: 82152  Size: SH
  6. For the 4.3L, 5.0L, and the 5.7L, remove the fan and the clutch retaining nut from the coolant pump pulley.
  7. Remove the fan and the clutch from the vehicle.

  8. Object Number: 71667  Size: SH
  9. For the 7.4L, remove the fan and the clutch retaining nuts from the coolant pump pulley.
  10. Remove the fan and the clutch from the vehicle.

  11. Object Number: 71647  Size: SH
  12. For the diesel engines, remove the fan and the clutch retaining nuts from the coolant pump pulley.
  13. Remove the fan and the clutch from the vehicle.

Installation Procedure


    Object Number: 82152  Size: SH
  1. For the 4.3L, 5.0L, and the 5.7L, install the fan and the clutch to the vehicle.
  2. Install the fan and the clutch retaining nut to the coolant pump pulley.
  3. Tighten
    Tighten the nut to 57 N·m (42 lb ft).

    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: 71667  Size: SH
  4. For the 7.4L, install the fan and the clutch to the vehicle.
  5. Install the fan and the clutch retaining nuts to the coolant pump pulley.
  6. Tighten
    Tighten the nuts to 57 N·m (42 lb ft).


    Object Number: 71647  Size: SH
  7. For the diesel engines, install the fan and the clutch to the vehicle.
  8. Install the fan and the clutch retaining nuts to the coolant pump pulley.
  9. Tighten
    Tighten the nuts to 24 N·m (18 lb ft).

  10. Install the upper radiator shroud.
  11. Install the coolant reservoir or the surge tank (Diesel).
  12. • For the reservoir, refer to Coolant Recovery Reservoir Replacement .
    • For the surge tank, refer to Surge Tank (Diesel) .
  13. Install the air cleaner and the duct. Refer to Engine Controls.