GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41240 Fan Clutch Wrench

Removal Procedure

  1. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
  2. Important: In order to maintain a balanced fan assembly, align the yellow paint mark on the fan clutch hub with the yellow paint mark on the water pump hub.


    Object Number: 42910  Size: SH
  3. Remove the fan clutch from the coolant pump using J 41240
  4. 2.1. Install J 41240-1 into the water pump access holes.
    2.2. With J 41240-2 secure on the fan clutch nut, hold J 41240-1 firmly in place while turning J 41240-2 counter-clockwise.
  5. Remove the fan and the fan clutch as an assembly.

  6. Object Number: 42877  Size: SH
  7. Remove the fan-to-fan clutch mounting bolts.
  8. Remove the fan from the clutch.

Installation Procedure

    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: 42877  Size: SH
  1. Install the fan to the fan clutch mounting bolts.
  2. Tighten
    Tighten the fan clutch mounting bolts to 33 N·m (24 lb ft).


    Object Number: 42910  Size: SH
  3. Install the fan and fan clutch assembly to the coolant pump pulley using the J 41240 .
  4. Install the upper fan shroud. Refer to Fan Shroud Replacement .