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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1115 (Engine Cooling System) >> Repair Instructions >> Water Outlet Housing Replacement (LA1) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 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 Air Cleaner Assembly Replacement 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 (LA1) or Exhaust Crossover Pipe Replacement (LY7) in Engine Exhaust.
  4. Remove the radiator hose from the thermostat housing.
    5. Fig 1: Water Outlet Housing & Bolts
    GM30962Courtesy of GENERAL MOTORS CORP.
  5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
  6. Remove the thermostat housing and gasket.
    7. Fig 2: View Of Thermostat (3.4L)
    GM30995Courtesy of GENERAL MOTORS CORP.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
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