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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 596 (Engine Cooling System) >> Repair Instructions >> Thermostat Replacement (4.3L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air cleaner and the duct assembly.
  2. Partially drain the coolant. Refer to Draining and Filling Cooling System .
  3. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement .
  4. Disconnect the radiator hose from the thermostat housing.
    Fig 1: Removing Coolant Recovery Reservoir
    G01699527Courtesy of GENERAL MOTORS CORP.
  5. Remove the bolts attaching the thermostat housing to the thermostat.
  6. Remove the thermostat housing.
  7. Remove the thermostat.
  8. Clean the gasket mating surfaces.
    Fig 2: Removing Bolts, Thermostat Housing & Thermostat
    G01699528Courtesy of GENERAL MOTORS CORP.
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