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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 (3.8L) >> Installation Procedure

Installation 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. Apply GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the following:
    • Engine block heater seal
    • Cleaned surface of the engine block heater hole
  2. Install the coolant heater by pushing tight to the block.
    Fig 1: Coolant Heater
    G01764854Courtesy of GENERAL MOTORS CORP.
  3. Position the engine coolant heater element at the 9 o'clock position (2). Final installed position between 10 o'clock (1) and 8 o'clock (3) is acceptable.
  4. Tighten the coolant heater bolt until both locking wings draw tight against the inner wall of the engine block.

    Tighten: 

    Tighten the coolant heater bolt to 2 N.m (17 in lbs) 

  5. Install the coolant heater cord to the coolant heater.
  6. Fill the cooling system. Refer to Draining and Filling Cooling System 
    Fig 2: Position The Engine Coolant Heater Element
    G01764855Courtesy of GENERAL MOTORS CORP.
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