GM Service Manual Online
For 1990-2009 cars only

Fan Clutch Replacement 5.7L and 6.5L

Removal Procedure

Tools Required

    • J 41240 Fan Clutch Wrench and Spanner
    • J 41240-5A Fan Clutch Wrench

    Caution: Do not use or attempt to repair a damaged cooling fan assembly. Replace damaged fans with new assemblies. An unbalanced cooling fan could fly apart causing personal injury and property damage.

  1. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement or Drive Belt Replacement .

  3. Object Number: 362333  Size: SH
  4. Use the J 41240 in order to remove the fan and the clutch on the 5.7L .
  5. Use the Spanner of the J 41240 in order to hold the Pulley.

  6. Use the J 41240-5A in order to remove the fan and the clutch on the 6.5L.
  7. Use the Spanner of the J 41240 in order to hold the Pulley.


    Object Number: 362335  Size: SH
  8. Remove the fan blade assembly from the clutch.

Installation Procedure

Tools Required

    • J 41240 Fan Clutch Wrench and Spanner
    • J 41240-5A Fan Clutch Wrench

Caution: Do not use or attempt to repair a damaged cooling fan assembly. Replace damaged fans with new assemblies. An unbalanced cooling fan could fly apart causing personal injury and property damage.


    Object Number: 362335  Size: SH

    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.

  1. Install the fan blade to the clutch.
  2. Tighten
    Tighten the bolts to 23 N·m (17 lb ft).


    Object Number: 362333  Size: SH
  3. Use the J 41240 in order to tighten the fan and clutch on the 5.7L.
  4. Use the Spanner of the J 41240 in order to hold the pulley.

  5. Use the J 41240-5A and the J 41240 in order to tighten the fan and clutch on the 6.5L.
  6. Use the Spanner of the J 41240 in order to hold the pulley.

    Tighten

        • Tighten the 5.0L and 5.7L fan clutch nut to 56 N·m (41 lb ft).
        • Tighten the 6.5L fan clutch nut to 59 N·m (44 lb ft).
  7. Install the accessory drive belt. Refer to Drive Belt Replacement or Drive Belt Replacement .
  8. Install the upper fan shroud. Refer to Fan Shroud Replacement .

Fan Clutch Replacement 7.4L

Removal Procedure


    Object Number: 108015  Size: SH
  1. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
  2. • Locate the yellow dot on the fan clutch hub.
    • Mark the coolant pump pulley adjacent to the yellow dot.
  3. Remove the nuts from the fan clutch hub.
  4. Remove the fan and fan clutch from the coolant pump pulley.
  5. Remove the bolts.
  6. Remove the radiator fan from the fan clutch.
  7. Inspect the mating surfaces of the coolant pump hub and the fan clutch hub for smoothness. Rework as needed in order to eliminate any burrs or other imperfections.

Installation Procedure

    Caution: Do not use or attempt to repair a damaged cooling fan assembly. Replace damaged fans with new assemblies. An unbalanced cooling fan could fly apart causing personal injury and property damage.

  1. Install the radiator fan to the fan clutch.

  2. Object Number: 108015  Size: SH

    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.

  3. Install the bolts.
  4. Tighten
    Tighten the bolts to 24 N·m (18 lb ft).

  5. Install the fan and clutch assembly to the coolant pump pulley. Align the yellow marks on the coolant pump pulley and the fan clutch hub.
  6. Install the nuts.
  7. Tighten
    Tighten the nuts to 24 N·m (18 lb ft).

  8. Install the upper fan shroud. Refer to Fan Shroud Replacement .