GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Park Avenue 🢒 Engine 🢒 Engine Controls - 3.8L 🢒 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. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Remove the front headlamps. Refer to Headlamp Replacement in Lighting.
  3. Remove the hood latch support. Refer to Hood Latch Support Replacement in Body Front End.

    4. Object Number: 165589 Size: SH
  4. Remove the upper radiator seal.
  5. Remove the upper radiator brackets.
  6. Disconnect the inlet radiator hose from the radiator.

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

    8. Object Number: 420678 Size: SH
  8. Disconnect the transmission oil cooler line clip from the lower rail.

    9. Object Number: 130726 Size: SH
  9. Disconnect the fan mounting bolts.
  10. Disconnect the coolant overflow hose from the fan assembly.
  11. Lift the radiator assembly off the lower mounts and move the assembly towards the front of the vehicle on left side.
  12. Remove the fans by releasing from the lower mounting tabs and raise the left side of the fans up.

    13. 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.

  13. Remove the fan retaining nut (5) from the motors (2).
  14. Remove the fan (4) from the motor shaft
  15. Remove the motor retaining screws (3).
  16. 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).


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

    7. Tighten
    Tighten the electric cooling fan mounting bolts to 9 N·m (80 lb in).

  7. Reposition the radiator and fan assembly onto the lower mounts.
  8. Install the coolant overflow hose into the fan shroud clips.

    9. Object Number: 420678 Size: SH
  9. Install the transmission oil cooler line clip bolt.

    10. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 165592 Size: SH
  10. Connect the wiring harness electrical connectors to the fan motors.
  11. Install the inlet radiator hose to the radiator.
  12. Install the upper radiator brackets and bolts.

    13. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 165589 Size: SH
  13. Install the upper radiator seal.
  14. Install the hood latch support. Refer to Hood Latch Support Replacement in Body Front End.
  15. Install the front headlamps. Refer to Headlamp Replacement in Lighting.
  16. Fill the coolng system. Refer to Cooling System Draining and Filling .