Heater Core: Service and Repair

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE NEGATIVE BATTERY (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY OR DEATH.

NOTE: Disassembly of the HVAC housing is not required to remove heater core.




1. Remove the HVAC housing.
2. Remove the foam seal from the heater core tubes.
3. If equipped with the dual zone heating-A/C system, remove the linkage rod (4) to gain access to the heater core (3).
4. Remove the two screws (1) that secure the heater core tube bracket (2) to the HVAC housing and remove the bracket.
5. Carefully pull the heater core out of the front of the HVAC housing.
6. Inspect all foam seals and replace as required.

INSTALLATION




1. Carefully install the heater core (3) into the front of the HVAC housing.
2. Position the heater core tube bracket (2) onto the HVAC housing.
3. Install the two screws (1) that secures the heater core bracket to the HVAC housing. Tighten the screws to 2.2 N.m (20 in. lbs.).
4. If equipped with the dual zone heating-A/C system, install the linkage rod (4).
5. Install the foam seal onto the heater core tubes.

NOTE: If the heater core is being replaced, flush the cooling system.

6. Install the HVAC housing.