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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1284 (Engine Cooling System) >> Repair Instructions >> Coolant Heater Replacement (LMM) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Engine Block Heater
    GM663089Courtesy of GENERAL MOTORS CORP.
  1. Coat the O-ring seal and the cleaned surface of the plug opening with water resistant high-temperature grease lubricant GM P/N 1052196 (Canadian P/N 5264008), or the equivalent.
  2. NOTE: Avoid element contact with the inside walls of the engine block.
  3. Align the coolant heater element to point towards the top of the engine.
  4. Tightly push the coolant heater into the engine block.
  5. Fig 2: View Of Coolant Heater Locking Wings & Engine Block Inner Wall
    GM312945Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  6. Tighten the bolt on the engine coolant heater until both of the locking wings draw tightly against the inner wall of the engine block.

    Tighten the bolt to 2 N.m (18 lb in).

  7. Fig 3: View Of Engine Coolant Heater Cord
    GM674570Courtesy of GENERAL MOTORS CORP.
    CAUTION: The heater cord must not touch the engine, hot pipes, manifold, or any moving parts. Route the cord to the left front of the engine compartment securing with tie straps as necessary to prevent damage.
  8. Connect the heater cord to the coolant heater.
  9. Remove the right engine mount. Refer to Engine Mount Replacement - Right Side .
  10. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation .
  11. Fill the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill)  or Cooling System Draining and Filling (Static Fill) .
  12. Inspect for coolant leaks.