Evaporator Core: Service and Repair

1. Disable airbag system.
2. Disconnect battery ground cable.
3. Drain radiator coolant into suitable container.
4. Discharge refrigerant from A/C.
5. Disconnect heater hoses from heater tubes. Plug heater tubes and blow any coolant from heater core with low-pressure air.
6. Disconnect vacuum supply hose from in-line vacuum check valve in engine compartment.
7. Disconnect liquid line and accumulator from evaporator core at dash panel. Cap refrigerant lines and evaporator core to prevent entrance of dirt and moisture.
8. Remove instrument panel.
9. Remove floor register to bottom of evaporator case retaining screw.
10. Remove evaporator case to cowl top panel retaining screw.
11. Disconnect vacuum line, electrical connections and aspirator hose from evaporator case.
12. Remove evaporator case to dash panel retaining nuts.
13. Carefully pull evaporator assembly away from dash panel and remove evaporator case from vehicle.
14. Reverse procedure to install. Ensure correct type O-rings are installed on A/C fittings.