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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 881 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSWATER PUMP REPLACEMENT (6.6 L ENGINE)INSTALLATION PROCEDURE
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

Installation Procedure

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Yukon, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, and 2001 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Water Pump & O-Ring (6.6L (LB7))
    GM660521Courtesy of GENERAL MOTORS COMPANY
  1. Lubricate the water pump O-ring with engine oil.
  2. Install the water pump.
  3. Install the water pump bolts. Ensure the correct length bolt is used in the proper location.

    Tighten 

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

    4. Fig 2: View Of Water Pump Outlet Pipe Nuts
    GM660519Courtesy of GENERAL MOTORS COMPANY
  4. Install the water pump to water pump outlet pipe gasket.
  5. Install the engine wiring harness retainer on the water pump outlet pipe inner stud.
  6. Install the water pump to water pump outlet pipe nuts.

    Tighten 

    Tighten the water pump to water pump outlet pipe nuts to 21 N.m (15 lb ft).

    7. Fig 3: View Of Wheelhouse Panel & Push-In Retainers
    GM401885Courtesy of GENERAL MOTORS COMPANY
  7. Install the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement .
  8. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in Engine Mechanical - 6.6L.
  9. Install the fan clutch. Refer to Fan Clutch Replacement .
  10. Fill the engine with coolant. Refer to Cooling System Draining and Filling .
  11. Install the left front fender wheelhouse inner panel (1).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.