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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Repair Instructions >> Water Pump Replacement >> Installation Procedure

Installation Procedure

  1. Install the coolant pump gaskets.
  2. Install the coolant pump.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the four bolts retaining the coolant pump.

    Tighten 

    Tighten the bolts to 45 N.m (33 lb ft).

    Fig 1: Installing Coolant Pump
    G01646433Courtesy of GENERAL MOTORS CORP.
  4. Connect the coolant bypass hose and clamps.
    Fig 2: Installing Coolant Bypass Hose
    G01646434Courtesy of GENERAL MOTORS CORP.
  5. Connect the radiator outlet hose to the coolant pump. Refer to RADIATOR HOSE REPLACEMENT - OUTLET .
  6. Install the coolant pump pulley and the bolts.

    Tighten 

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

    Fig 3: Installing Coolant Pump Pulley Bolts And Pulley
    G01646435Courtesy of GENERAL MOTORS CORP.
  7. Install the fan and fan blade clutch assembly. Refer to FAN REPLACEMENT .
  8. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.
  9. Install the upper fan shroud and the bolts. Refer to FAN SHROUD REPLACEMENT - UPPER .
  10. Install the Mass Air Flow (MAF) sensor. Refer to ENGINE CONTROLS - REMOVAL & INSTALLATION in Engine Controls -4.3L.
  11. Install the air cleaner assembly. Refer to ENGINE CONTROLS - REMOVAL & INSTALLATION in Engine Controls - 4.3L.
  12. Refill the radiator with coolant. Refer to DRAINING AND FILLING COOLING SYSTEM .
  13. Start engine. After engine reaches normal operating temperature, check for coolant leaks.
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