GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Bonneville 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Fan Replacement

Removal Procedure

    Caution: An electric fan under the hood can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan.

    Caution: To help avoid personal injury or damage to the vehicle, a bent, cracked, or damaged fan blade or housing should always be replaced.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the upper radiator support bar. Refer to Radiator Support Replacement in Body Front End.

    3. Object Number: 165592 Size: SH
  3. Disconnect the wiring harness electrical connector from the motor and the fan bracket.

    4. Object Number: 420680 Size: SH
  4. Remove the transmission oil cooler line clip from the fan shroud.
  5. Remove the two fan mounting bolts.
  6. Lift the fan assembly off the lower holding tabs and remove from the vehicle.
  7. Remove the cooling fan heat shield (SSE models only).

    8. Object Number: 334274 Size: SH

    Important: The fan blade retaining nut is left hand thread, damage may occur to motor threads if trying to remove as a right hand thread nut.

  8. Remove the fan retaining nut (5) from the motors (2).
  9. Remove the fan (4) from the motor shaft
  10. Remove the motor retaining screws (3).
  11. Remove the motor (2) from the shroud (1).

Installation Procedure

    Object Number: 334274 Size: SH
  1. Install the motor (2) to the shroud (1).

    2. 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 motor retaining screws (3).

    3. Tighten
    Tighten the electric cooling fan motor mounting bolts to 6 N·m (53 lb in).

  3. Install the fan (4) to the motor shaft
  4. Install the fan retaining nut (5) to the motors (2).

    5. Tighten
    Tighten the electric cooling fan blade attaching nut to 6 N·m (53 lb in).

  5. Install the cooling fan heat shield and bolts.

    6. Tighten
    Tighten the bolts to 4 N·m (35 lb in).


    Object Number: 130726 Size: SH
  6. Install the fan assembly and insert into the lower radiator holding tabs.
  7. Install the electric cooling fan mounting bolts.

    8. Tighten
    Tighten the electric cooling fan mounting bolts to 8 N·m (71 lb in).


    Object Number: 420680 Size: SH
  8. Position the transmission oil cooler lines and install the bracket and bolt.

    9. Tighten
    Tighten the mounting bolt to 8 N·m (71 lb in).


    Object Number: 165592 Size: SH
  9. Connect the wiring harness electrical connectors to the fan motors.
  10. Install the upper radiator support bar. Refer to Radiator Support Replacement in Body Front End.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.