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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 (8.1L) >> 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. Disconnect the following electrical connectors:
    • Mass airflow (MAF) sensor (1)
    • Intake air temperature (IAT) sensor (2)
    Fig 1: Disconnecting MAF & IAT
    G01699541Courtesy of GENERAL MOTORS CORP.
  2. Loosen the clamp at the air cleaner.
  3. Remove the air cleaner bolts.
  4. Remove the air cleaner.
    Fig 2: Removing Air Cleaner
    G01699542Courtesy of GENERAL MOTORS CORP.
  5. Loosen the clamp (2) at the throttle body (1).
  6. Remove the air cleaner duct (3).
    Fig 3: Removing Air Cleaner Duct
    G01699543Courtesy of GENERAL MOTORS CORP.
  7. Drain the coolant until the level is below the thermostat.
  8. Loosen the inlet hose clamp at the thermostat housing.
  9. Remove the inlet hose (1) from the housing.
    Fig 4: Removing Inlet Hose
    G01699544Courtesy of GENERAL MOTORS CORP.
  10. Remove the thermostat housing bolts (2).
  11. Remove the thermostat housing (1).
  12. Remove the thermostat (3).
    Fig 5: Remove Thermostat
    G01699545Courtesy of GENERAL MOTORS CORP.
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