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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1226 (Engine Cooling System) >> Repair Instructions >> Coolant Heater Replacement (3.8L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply a coat of GM P/N 12346004 thread sealant with Teflon or equivalent to the O-ring and clean the surface of the plug opening.
  2. Install the coolant heater by pushing tight to the block.
    Fig 1: Coolant Heater
    G01703924Courtesy of GENERAL MOTORS CORP.
  3. Install the coolant heater so the element is positioned as shown.
    NOTE: Refer to FASTENER NOTICE .
  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 (18 Ib in).

  5. Connect the coolant heater cord to the coolant heater.
  6. Fill the cooling system. Refer to Draining and Filling Cooling System .
  7. Inspect for leaks.
    Fig 2: Position For Coolant Heater Element Installation
    G01703925Courtesy of GENERAL MOTORS CORP.
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