W/ Standard Heater

Fig. 17 Heater Assembly. Less A/C:

Less A/C

1. Disconnect battery ground cable and drain cooling system.
2. Disconnect heater core hoses.
3. Disconnect temperature control cable from heater core cover and blend air door crank.
4. Disconnect blower motor feed wire from resistor block located on distribution duct in cab.
5. Remove nuts retaining heater assembly to side cowl and nuts retaining heater assembly to dash panel, then remove heater assembly from vehicle.
6. Remove heater core cover, then remove the two heater core retaining screws and remove heater core.
7. Reverse procedure to install.

Fig. 18 Heater Assembly. With A/C:

With A/C

1. Discharge refrigerant from system.
2. Disconnect battery ground cable and drain cooling system.
3. Place a waterproof cover over alternator to prevent coolant from spilling over it, then disconnect and plug heater core hoses.
4. Disconnect refrigerant lines at H-valve, then remove two screws from filter drier bracket and position lines aside. Cap all refrigerant lines. Disconnect temperature control cable from cover.
5. From inside vehicle, remove glove box, spot cooler bezel and appearance shield.
6. Through glove box opening and under instrument panel, remove screws and nuts retaining evaporator housing to dash panel.
7. Remove the two screws from flange connection to blower housing. Separate evaporator housing from blower housing and carefully remove evaporator housing from vehicle.
8. Remove cover from housing, then remove heater core strap retaining screw and remove heater core.
9. Reverse procedure to install.