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Installation Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a new water pump gasket.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  2. Install the water pump and secure the water pump with the bolts.

    Tighten 

    Tighten the bolts to 10 N.m (89 lb in).

    Fig 1: Installing Water Pump & Water Pump Bolts (4.2L Engine)
    G02129823Courtesy of GENERAL MOTORS CORP.
  3. Install the water pump pulley.
  4. Install the water pump pulley bolts.
  5. Using the J 41240  , secure the water pump pulley while tightening the water pump pulley bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

  6. Remove the J 41240  .
  7. Install the drive belt. Refer to DRIVE BELT REPLACEMENT  in Engine Mechanical - 4.2L.
  8. Install the fan and the shroud. Refer to COOLING FAN AND SHROUD REPLACEMENT   .
  9. Fill the cooling system with the specified coolant and concentration. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6)   or  DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3)   .
  10. Inspect for leaks.
    Fig 2: Installing Water Pump Pulley & Water Pump Pulley Bolts (4.2L Engine)
    G02129824Courtesy of GENERAL MOTORS CORP.
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