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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1003 (Engine Cooling System) >> Repair Instructions >> Water Pump Replacement (6.6L (LB7) Engine) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Lubricate the water pump O-ring with engine oil.
  2. Install the water pump.
    3. Fig 1: View Of Water Pump & O-Ring (6.6L (LB7))
    GM660521Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the water pump bolts. Ensure the correct length bolt is used in the proper location.

    Tighten:  Tighten the bolts to 21 N.m (15 lb ft).

  4. Install the water pump to oil cooler inlet pipe gasket.
  5. Install the engine wiring harness retainer on the water pump outlet pipe inner stud.
  6. Install the water pump to oil cooler inlet pipe nuts.

    Tighten:  Tighten the nuts to 21 N.m (1 lb ft).

    7. Fig 2: View Of Water Pump Inlet Pipe Nuts
    GM660519Courtesy of GENERAL MOTORS CORP.
  7. Install the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement (6.6L (LB7) Engine) .
  8. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in Engine Mechanical - 6.6 L.
  9. Install the fan clutch. Refer to Fan Clutch Replacement .
  10. Fill the engine with coolant. Refer to Draining and Filling Cooling System (without HP2) .
  11. Install the left fender wheelhouse inner panel. Refer to Wheelhouse Panel Replacement in Body Front End.
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