GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Fan Upper Shroud Replacement

Removal Procedure

    Object Number: 489174 Size: SH
  1. If equipped with a 4.3L engine, perform the following:
    2. • Loosen the air cleaner outlet duct clamps at the following locations:
       - Throttle body
       - Mass airflow/intake air temperature (MAF/IAT) sensor
    • Remove the air cleaner outlet duct wingnut.
    • Remove the air cleaner outlet duct.
    • Pivot the resonator end of the duct upward until the hinge clip releases from the lip on the throttle body.

    Object Number: 307286 Size: SH
  2. If equipped with a 4.8L, 5.3L, or 6.0L engine, perform the following:
    3. • Loosen the air cleaner outlet duct clamps at the following locations:
       - Throttle body
       - MAF/IAT sensor
    • Remove the radiator inlet hose clip from the outlet duct.
    • Remove the air cleaner outlet duct.

    Object Number: 700979 Size: SH
  3. If equipped with the 8.1L engine, perform the following:
  4. Loosen the air cleaner outlet duct clamps at the following locations:
    5. • Throttle body
    • MAF/IAT sensor
  5. Remove the air cleaner outlet duct.

    6. Object Number: 700598 Size: SH
  6. If equipped with the 6.0L, 6.6L, or 8.1L engine with the regular production option (RPO) M74 transmission, remove the engine harness clip from the powertrain control module (PCM) cover.

    7. Object Number: 700600 Size: SH
  7. If equipped with the 6.0L, 6.6L, or 8.1L engine with the RPO M74 transmission, remove the transmission control module (TCM) cover bolts.
  8. Lift up TCM cover to unclip the cover from the fan shroud.

    9. Object Number: 700599 Size: SH
  9. If equipped with the 6.0L, 6.6L, or 8.1L engine with the RPO M74 transmission, loosen the TCM electrical connector bolts.
  10. Disconnect the TCM electrical connectors (1).
  11. Remove the TCM and cover.
  12. Reposition the TCM electrical connectors.

    13. Object Number: 659416 Size: SH
  13. If equipped with the 4.8L, 5.3L, or 6.0L engine, reposition the inlet hose clamp at the radiator.
  14. Remove the inlet hose rosebud clips from the following locations:
    15. • Fan shroud
    • Air cleaner outlet duct
  15. Remove the inlet hose from the radiator.
  16. Reposition the radiator inlet hose.

    17. Object Number: 362174 Size: SH
  17. Remove the fan shroud retainers.

    18. Object Number: 362162 Size: SH
  18. Remove the fan shroud bolts
  19. Remove the upper fan shroud.

Installation Procedure

    Object Number: 362162 Size: SH
  1. Install the upper fan shroud.

    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 fan shroud bolts.

    3. Tighten
    Tighten the fan shroud bolts to 9 N·m (80 lb in).


    Object Number: 362174 Size: SH
  3. Install the fan shroud retainers.
  4. Reposition the radiator inlet hose.

    5. Object Number: 659416 Size: SH
  5. If equipped with the 4.8L, 5.3L, or 6.0L engine, install the inlet hose to the radiator.
  6. Position the inlet hose clamp at the radiator.
  7. Install the inlet hose rosebud clips to the following locations:
    8. • Fan shroud
    • Air cleaner outlet duct

    Object Number: 700599 Size: SH
  8. If equipped with the 6.0L, 6.6L, or 8.1L engine with the RPO M74 transmission, reposition the TCM electrical connectors.
  9. Connect the TCM electrical connectors (1).
  10. Install the TCM and cover.
  11. Tighten the TCM electrical connector bolts.

    12. Tighten
    Tighten the TCM electrical connector bolts to 8 N·m (71 lb in).


    Object Number: 700600 Size: SH
  12. If equipped with the 6.0L, 6.6L, or 8.1L engine with the RPO M74 transmission, push down the TCM cover in order to clip the cover to the fan shroud.
  13. Install the TCM cover bolts.

    14. Tighten
    Tighten the TCM cover bolts to 9 N·m (80 lb in).


    Object Number: 700598 Size: SH
  14. If equipped with the 6.0L, 6.6L, or 8.1L engine with the RPO M74 transmission, install the engine harness clip to the PCM cover.

    15. Object Number: 700979 Size: SH
  15. If equipped with the 8.1L engine perform the following:
    16. • Install the air cleaner outlet duct.
    • Tighten the air cleaner outlet duct clamps at the following locations:
       - Throttle body
       - MAF/IAT sensor

    Tighten
    Tighten the air cleaner outlet duct clamp screws to 7 N·m (62 lb in).


    Object Number: 307286 Size: SH
  16. If equipped with a 4.8L, 5.3L, or 6.0L engine, perform the following:

    17.    Important: Align the arrow at the throttle body end of the duct with the throttle body attaching stud.

    • Install the air cleaner outlet duct.
    • Install the radiator inlet hose clip to the outlet duct.
    • Tighten the air cleaner outlet duct clamps at the following locations:
       - Throttle body
       - MAF/IAT sensor

    Tighten
    Tighten the air cleaner outlet duct clamp screws to 7 N·m (62 lb in).


    Object Number: 489174 Size: SH
  17. If equipped with a 4.3 L engine, perform the following:
    18. • Install the air cleaner outlet duct.
    • Align the hinge clip with the lip on the throttle body. Pivot the air cleaner outlet duct and resonator downward until the mounting stud is through the hole.
    • Install the air cleaner outlet duct wingnut.

    Tighten
    Tighten the air cleaner outlet duct wingnut to 3 N·m (27 lb in).

    • Tighten the air cleaner outlet duct clamps at the following locations:
       - Throttle body
       - MAF/IAT sensor

    Tighten
    Tighten the air cleaner outlet duct clamp screws to 7 N·m (62 lb in).