Heater Core: Service and Repair

BROUGHAM

1. Disconnect electrical connectors at blower motor, compressor cycling switch, power module and radio lead-in connections.
2. Remove righthand windshield washer nozzle.
3. Remove righthand secondary air inlet screen from plenum.
4. Partially remove rubber molding above plenum.
5. Remove remaining screws and the primary inlet screen.
6. Remove blower motor.
7. Remove two screws securing compressor cycling switch to module and position switch out of way.
8. Remove A/C module cover attaching screws and the cover.
9. Disconnect heater hoses at heater core.
10. Remove screw and retainer holding heater core to frame top.
11. With temperature door in max. hot position, reach through temperature housing and push lower forward corner of heater core away from housing, then rotate core parallel to housing.
12. Remove heater core.
13. Reverse procedure to install.