Heater Core: Service and Repair

REMOVAL
1. Prepare the vehicle for heater core removal.
1 Remove the A/C evaporator housing, please refer to Heating and Air Conditioning/Evaporator Case/Service and Repair/ Service and Repair
2 Remove the Dash Board. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Removal and Installation, Service and Repair

3 Remove the Powertrain Control Module (PCM), please refer to Powertrain Management/Computers and Controls/Engine Control Module/Service and Repair/ Service and Repair

NOTE: If a heater core leak is suspected, the heater core must be leak tested before it is removed from the vehicle.






2. Remove the PCM heat sink
1 Remove the ground strap screw.
2 Remove the heat sink.






3. Remove the four nuts from the engine side of the dash panel. Position the plenum chamber on the vehicle floor.






4. Remove the heater core cover.
1 Remove the screws.
2 Remove the heater core cover.






5. Remove the heater core.
- During installation, be sure to install a new oval foam seal around the heater core inlet and outlet tubes.

INSTALLATION
1. To install, reverse the removal procedure.