Coolant Heater Replacement

Coolant Heater Replacement

Removal Procedure




1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (GE 47716) (Cooling System Draining and Filling (GE 47716)).
2. Remove the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation (Service and Repair).
3. Disconnect the engine coolant heater cord from the engine coolant heater.





Note: Take care not to damage the surface of the opening in the engine block.

4. Remove the engine coolant heater.
5. Clean the opening in the engine block, remove any burrs, sealing compound, or paint.

Installation Procedure

Note: The engine coolant heater sealing washer may be reused if not bent, scored or otherwise damaged.




1. 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.
2. Insert the engine coolant heater.

Caution: Refer to Fastener Caution (Fastener Caution).

3. Tighten the engine coolant heater.

Tighten the engine coolant heater to 40 Nm (30 lb ft).




4. Install the engine coolant heater cord to the engine coolant heater.
5. Install the tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation (Service and Repair).
6. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (GE 47716) (Cooling System Draining and Filling (GE 47716)).