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John
John, Master A.S.E Automotive technician
Category: Chevy
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Experience:  A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
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2002 Tahoe: I need to replace a water pump..diagrams..helpfull

Resolved Question:

I need to replace a water pump on my 2002 Tahoe, detail instructions and diagrams will be very helpfull.
Thanks
Submitted: 7 years ago.
Category: Chevy
Expert:  John replied 7 years ago.

HelloCustomer

This information should help you,this is not a bad chore.

Water Pump Replacement (4.8L, 5.3L, and 6.0L Engines)

Removal Procedure


    Object Number: 307286  Size: SH

  1. Drain the cooling system.
  2. Loosen the air cleaner outlet duct clamps at the following locations:
    Throttle body
    Mass airflow/intake air temperature (MAF/IAT) sensor
  3. Remove the radiator inlet hose clip from the outlet duct.
  4. Remove the air cleaner outlet duct.
    Object Number: 659465  Size: SH

  5. If necessary, remove the engine sight shield.
  6. Remove the radiator vent inlet hose from the radiator hose clips.
    Object Number: 659418  Size: SH

  7. Reposition the inlet hose clamp at the water pump.
  8. Remove the inlet hose from the water pump.
  9. Remove the fan blade.
  10. Remove the accessory drive belt. Object Number: 659509  Size: SH

  11. Reposition the outlet hose clamp at the water pump.
  12. Remove the outlet hose from the water pump.
    Object Number: 659180  Size: SH

  13. Reposition the surge tank outlet hose clamp at the water pump.
  14. Remove the surge tank outlet hose from the water pump.
    Object Number: 660665  Size: SH

  15. Reposition the heater inlet hose clamp at the water pump.
  16. Remove the heater inlet hose from the water pump.
    Object Number: 260121  Size: SH

  17. Remove the water pump bolts.
  18. Remove the water pump and gaskets.
  19. Discard the water pump gaskets.

Installation Procedure

Important: All gaskets surfaces are to be free of oil or other foreign material during assembly.


    Object Number: 260121  Size: SH

  1. Install the water pump and NEW gaskets.

    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 water pump bolts.

    Tighten

    1. Tighten the water pump bolts a first pass to 15 N·m (11 lb ft).
    2. Tighten the water pump bolts a final pass to 30 N·m (22 lb ft).

    Object Number: 660665  Size: SH

  3. Install the heater inlet hose to the water pump.
  4. Position the heater inlet hose clamp at the water pump.
    Object Number: 659180  Size: SH

  5. Install the surge tank outlet hose to the water pump.
  6. Position the surge tank outlet hose clamp at the water pump.
    Object Number: 659509  Size: SH

  7. Install the outlet hose to the water pump.
  8. Position the outlet hose clamp at the water pump.
  9. Install the accessory drive belt.
  10. Install the fan blade. Object Number: 659418  Size: SH

  11. Install the inlet hose to the water pump.
  12. Position the inlet hose clamp at the water pump.
    Object Number: 659465  Size: SH

  13. Install the engine vent inlet hose to the radiator hose clips.
  14. If necessary, install the engine sight shield.

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

  15. Install the air cleaner outlet duct.
  16. Install the radiator inlet hose clip to the outlet duct.
  17. 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).

  18. Fill the cooling system.
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