Montana AWD V6-3.4L VIN E (2004)
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.
2. Remove the left wiper arm linkage nuts.
Reposition the left wiper arm linkage for access.
3. Disconnect the vacuum hose from the brake booster and reposition.
4. Remove the air cleaner cover and intake tube.
5. Disconnect the throttle and cruise control cables from the TBI mounting bracket.
IMPORTANT:Disconnect the throttle and cruise control cables to prevent bending the cable housings.
6. Remove the transmission fluid filler tube.
7. Disconnect both of the heater hose clamps at the heater core using the J 38185.
8. Remove the heater hoses from the heater core.
9. Cap off the heater core pipes.
IMPORTANT:Cap off the heater core inlet and outlet pipes to prevent coolant spilling inside of the vehicle.
10. Remove the heater core cover.
11. Remove the heater core pipe retaining clamp screw.
12. Remove the heater core from the HVAC module.
