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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 601 (Engine Cooling System) >> Repair Instructions >> Coolant Heater Replacement (3.1L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System 
  2. Raise and support the vehicle.
  3. Disconnect the engine coolant heater cord from the engine coolant heater.
  4. Loosen the engine coolant heater bolt. Do not remove the engine coolant heater bolt.
  5. Remove the engine coolant heater.
  6. Clean the engine coolant heater opening.
    Fig 1: Engine Coolant Heater Cord From The Engine Coolant Heater
    G01764851Courtesy of GENERAL MOTORS CORP.
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