Removal Procedure
- Drain the cooling system. Refer to Cooling System Draining and Filling .
- Remove the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Disconnect the engine coolant heater cord from the engine coolant heater.
- Remove the engine coolant heater.
- Clean the opening in the engine block, remove any burrs, sealing compound, or paint.
Important: Take care not to damage the surface of the opening in the engine block.
Installation Procedure
- Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the engine coolant heater sealing washer.
- Insert the engine coolant heater.
- Tighten the engine coolant heater.
- Install the engine coolant heater cord to the engine coolant heater.
- Install the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Fill the cooling system. Refer to Cooling System Draining and Filling .
Important: The engine coolant heater sealing washer may be reused if not bent, scored or otherwise damaged.
Notice: 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
Tighten the engine coolant heater to 40 N·m (30 lb ft).
