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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.
IMPORTANT: All gaskets surfaces are to be free of oil or other foreign material during assembly.
  1. Install the water pump and NEW gaskets.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  2. Install the water pump bolts.

    Tighten 

    1. 2.1. Tighten the bolts a first pass to 15 N.m (11 lb ft).
    2. 2.2. Tighten the bolts a final pass to 30 N.m (22 lb ft).
      Fig 1: Installing Water Pump & New Gaskets (5.3L Engine)
      G02129831Courtesy of GENERAL MOTORS CORP.
  3. Install the auxiliary heater inlet and outlet hoses/pipes.
  4. Connect the auxiliary heater inlet and outlet hoses/pipes to the heater water shutoff valve.
    Fig 2: Installing Auxiliary Heater Inlet & Outlet Hoses/Pipes (5.3L Engine)
    G02129832Courtesy of GENERAL MOTORS CORP.
  5. Install the auxiliary heater inlet and outlet hose/pipe nut.

    Tighten 

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

  6. Install the hose to the throttle body.
  7. Using J 38185  , position the throttle body hose clamp at the throttle body.
  8. Install the inlet and outlet hoses/pipes to the water pump.
  9. Using J 38185  , position the auxiliary heater inlet and outlet hose/pipe clamps at the water pump.
    Fig 3: Installing Auxiliary Heater Inlet & Outlet Hose/Pipe (5.3L Engine)
    G02129833Courtesy of GENERAL MOTORS CORP.
  10. Install the outlet hose to the water pump.
  11. Using J 38185  , position the outlet hose clamp at the water pump.
    Fig 4: Installing Outlet Hose To Water Pump (5.3L Engine)
    G02129834Courtesy of GENERAL MOTORS CORP.
  12. Install the inlet hose to the water pump.
  13. Using J 38185  , position the inlet hose clamp at the water pump.
  14. Install the cooing fan and shroud. Refer to COOLING FAN AND SHROUD REPLACEMENT   .
  15. Install the accessory drive belt. Refer to DRIVE BELT REPLACEMENT - ACCESSORY  in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
    Fig 5: Installing Inlet Hose To Water Pump (5.3L Engine)
    G02129835Courtesy of GENERAL MOTORS CORP.
  16. Install the air cleaner outlet duct and bolt.

    Tighten 

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

  17. Tighten the air cleaner outlet duct clamps at the following locations:
    • Throttle body
    • MAF/IAT sensor

      Tighten 

      Tighten the clamps to 7 N.m (62 lb in).

  18. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6)   or  DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3)   .
    Fig 6: Installing Air Cleaner Outlet Duct & Bolt (5.3L Engine)
    G02129836Courtesy of GENERAL MOTORS CORP.
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