Installation Procedure
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- Coat the O-ring seal and the cleaned surface of the plug opening with water resistant high-temperature grease lubricant GM P/N 9985164 (Canadian P/N 10953480), or the equivalent.
Important: Avoid element contact with the inside walls of the engine block.
- Tightly push the coolant heater (1) into the engine block.
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.
- Tighten the coolant heater bolt until both of the locking wings draw tightly against the inner wall of the engine block.
Tighten
Tighten the bolt to 2 N.m (18 in lbs).
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. - Connect the heater cord to the coolant heater (4).
- Fill the cooling system. Refer to Draining and Filling Cooling System .
- Inspect the cooling system for leaks.