Removal and Installation
VEHICLES WITH 4.6L, 5.4L OR 6.8L ENGINE
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- Disconnect the battery. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(ref-210181) .
- Remove the battery (10655).
- Remove the battery tray. Remove the screws. Remove the battery tray.
- Move the junction block assembly. Remove the three screws.
- Move the suction accumulator (19C836). Remove the three screws. Move the suction accumulator.
- Remove the blower motor (19805). Disconnect the blower motor electrical connector. Remove the blower motor housing tube (19A786). Remove four screws. Remove the retaining clip. Remove the blower motor.
- Remove the blower motor wheel. Remove the retaining clip. Remove the blower motor wheel.
- To install, reverse the removal procedure.
Scheme 3
- Remove the heater core. For additional information, refer to «HEATER CORE»(ref-210170-S39763472722005121400000) .
- Remove the nuts and the heater core housing. Disconnect the temperature blend door actuator electrical connector.
- To install, reverse the removal procedure.
Note. If a heater core leak is suspected, the heater core must be pressure leak tested before it is removed from the vehicle. For additional information, refer to CLIMATE CONTROL SYSTEM-GENERAL INFORMATION .
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- Drain the engine cooling system. For additional information, refer to «ENGINE COOLING»(ref-210139) .
- Disconnect the heater hoses at the heater core.
- Remove the instrument panel finish panel.
- Remove the bolts and the instrument panel reinforcement.
- Remove the bolts and the instrument panel reinforcement bracket.
- Remove the screws and position the wire harness aside.
- Remove the screws and the heater core cover.
- Remove the heater core.
- To install, reverse the removal procedure. Clean and lubricate the coolant hoses with plain water only, if needed.
- Fill the engine cooling system. For additional information, refer to «ENGINE COOLING»(ref-210139) .
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- Remove the seal.
- Remove the seals.
- Drain the heater core.
- Remove the temperature blend door actuator motor (19E616). Remove the screws. Remove the temperature blend door actuator motor.
- To assemble, reverse the disassembly procedure.
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- Remove the evaporator core housing. For additional information, refer to «EVAPORATOR CORE HOUSING»(ref-210170-S15922260642005121400000) .
- Remove the blower motor (19805). Remove the blower motor housing tube (19A786). Remove the four screws. Remove the retaining clip. Remove the blower motor.
- Remove the heater blower motor switch resistor (18591). Remove the two screws. Remove the heater blower motor switch resistor.
- To assemble, reverse the disassembly procedure.
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- Remove the heater core housing. For additional information, refer to «AUXILIARY HEATER CORE HOUSING»(ref-210170-S38657943612005121400000) .
- Remove the evaporator core. For additional information, refer to «AIR CONDITIONING»(ref-210171) .
- Detach the wire harness. Remove the nut and stud. Disconnect the electrical connector. Disconnect the electrical connector and position the wire harness aside.
- Remove the suction accumulator. Remove the nuts. Remove the suction accumulator.
- Remove the washer reservoir. Remove the nut. Remove the bolt. Remove the washer reservoir. Disconnect the washer hose and washer pump electrical connector.
- Disconnect the blower motor electrical connector.
- Disconnect the blower motor resistor electrical connector.
- Disconnect the vacuum connector and detach the wire harness pin-type retainer.
- Remove the screws and position the wire harness aside.
- Position the auxiliary A/C lines aside (if equipped). Remove the bolt. Position the auxiliary A/C lines aside.
- Working from inside the vehicle, remove the three nuts.
- Position the evaporator core housing forward and remove the two fresh air inlet duct screws.
- Remove the fresh air inlet duct. Remove the screw. Remove the fresh air inlet duct. Detach the vacuum line retainer.
- Deflect the LH battery tray bracket (4.6L, 5.4L or 6.8L) or the LH junction box bracket (6.0L Diesel) to provide clearance for evaporator core housing removal.
- Remove the evaporator core housing.
- To install, reverse the removal procedure.