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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 >> Coolant Heater Replacement (8.1L) >> Installation Procedure

Installation 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. Apply thread sealant GM P/N 12346004 or equivalent to the threads of the engine block heater.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  2. Install the engine block heater to the engine block.

    Tighten 

    Tighten the engine block heater to 50 N.m (37 ft lbs).

    Fig 1: Installing Engine Block Heater
    G01699638Courtesy of GENERAL MOTORS CORP.
  3. Connect the engine block heater cord (1) from the block heater.
  4. Fill the cooling system. Refer to Draining and Filling Cooling System .
    Fig 2: Connecting Engine Block Heater Cord
    G01699639Courtesy of GENERAL MOTORS CORP.
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