Montana SV6 V6-3.9L (2007)
Heater Core: Service and Repair
Heater Core Replacement
Heater Core Replacement
Tools Required
J 38185 Hose Clamp Pliers
Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill LZ9) Draining and Filling Cooling System (Vac-N-Fill).
2. Disconnect both of the heater hose clamps at the heater core using the J 38185.
3. Remove the heater hoses from the heater core.
Important: Cap off the heater core inlet and outlet pipes to prevent coolant spilling inside of the vehicle.
4. Cap off the heater core pipes.
5. Remove the heater core cover.