HVAC Housing - Removal and Installation

HVAC HOUSING ASSEMBLY

WARNING: Refer to the applicable warnings and cautions for this system before performing the following operation Warning and Caution. Failure to follow the warnings and cautions could result in possible personal injury or death.

WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury or death.

NOTE: The HVAC housing must be removed from the vehicle and disassembled for service of the A/C evaporator, evaporator temperature sensor, mode-air and blend-air doors.





1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant system Refrigerant System Recovery .
3. Drain the engine cooling system Service and Repair .
4. Disconnect the A/C liquid line and the A/C accumulator from the A/C evaporator A/C Line - Removal and Removal .
5. Disconnect the heater hoses from the heater core tubes.
6. Remove the powertrain control module (PCM) to gain access to the two nuts (3) that secure the HVAC housing (1) to the engine compartment side of the dash panel (2) and remove the nuts Powertrain Control Module - Removal .




7. On Mega Cab models, remove the floor console duct Removal .
8. Remove the instrument panel from the passenger compartment Instrument Panel - Removal .
9. Remove the bolt (5) that secures the HVAC housing (4) to the floor bracket (6).
10. Remove the two nuts (3 and 7) that secure the HVAC housing to the passenger compartment side of the dash panel (1).
11. Pull the HVAC housing assembly rearward and remove the housing assembly from the passenger compartment.
12. If required, remove the fresh air inlet (2) from the dash panel (1).