Cavalier/Z24 L4-134 2.2L (1991)
Evaporator Core: Service and Repair
Fig. 12 Heater Core & Blower Motor
1.
Disconnect battery ground cable.
2.
Discharge air conditioning system, then drain cooling system.
3.
Raise and support vehicle.
4.
Remove rear lateral transaxle strut and mount, if equipped.
5.
Disconnect heater core heater hoses.
6.
Disconnect evaporator lines at evaporator core.
7.
Disconnect heater and evaporator assembly drain tube.
8.
Lower vehicle and remove right and left hush panels, steering column trim cover and glove compartment.
9.
Remove heater duct retaining screw and heater duct.
10.
Remove heater core cover attaching screws, then gently pull cover rearward and out of vehicle, Fig. 12. When removing heater core assembly,
pull assembly straight toward interior of vehicle until plastic drain tube clears cowl. If assembly is tilted in any direction before tube
clears cowl, the drain tube may break.
11.
Remove heater core retaining clamps and heater core from case.
12.
Remove defroster vacuum actuator to module case attaching screw.
13.
Remove evaporator cover and core.
14.
Reverse procedure to install.
