GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Fan Lower Shroud Replacement 4.3L, 4.8L, 5.3L, 6.0L

Removal Procedure

  1. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement for the 4.8L, 5.3L, 6.0L engines or Air Cleaner Assembly Replacement for the 4.3L engine.

  3. Object Number: 834218  Size: SH
  4. Remove the fan shroud bolts (1,3,4).
  5. Remove the fan shroud (2,5).

Installation Procedure


    Object Number: 834218  Size: SH
  1. Install the fan shroud (2,5).
  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.

  3. Install the fan shroud bolts (1,3,4).
  4. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  5. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement for the 4.8L, 5.3L, 6.0L engines or Air Cleaner Assembly Replacement for the 4.3L engine.
  6. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .

Engine Coolant Fan Lower Shroud Replacement 6.6L

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

  2. Object Number: 1728178  Size: SH
  3. Remove the upper fan shroud to lower fan shroud retaining bolts.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  5. Object Number: 1732226  Size: SH
  6. Remove the lower fan shroud retaining bolts.

  7. Object Number: 1732257  Size: SH
  8. Remove the lower fan shroud from the vehicle.

Installation Procedure


    Object Number: 1732257  Size: SH

    Important: Align lower fan shroud to the upper fan shroud with the alignment pins in the upper fan shroud.

  1. Install the lower fan shroud to the vehicle.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1732226  Size: SH
  3. Install the lower fan shroud retaining bolts.
  4. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  5. Lower the vehicle.

  6. Object Number: 1728178  Size: SH
  7. Install the upper fan shroud to lower fan shroud retaining bolts.
  8. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  9. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .