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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1782 (Engine Cooling System) >> Repair Instructions >> Water Outlet Housing Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air cleaner and duct assembly. Refer to in Engine Controls-3.4L
  2. Drain the coolant until the coolant level is below the thermostat. Refer to DRAINING AND FILLING COOLING SYSTEM  .
  3. Remove the crossover exhaust pipe. Refer to EXHAUST CROSSOVER PIPE REPLACEMENT in Engine Exhaust.
  4. Remove the radiator hose from the thermostat housing.
  5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
  6. Remove the thermostat housing and gasket.
    Fig 1: Removing Thermostat Housing And Bolts
    G01500970Courtesy of GENERAL MOTORS CORP.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
Fig 2: Removing Thermostat
G01500971Courtesy of GENERAL MOTORS CORP.
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