Page 5105 of 5267

7. On Mega Cab models, remove the floor console
duct (Refer to 24 - HEATING & AIR CONDITION-
ING/DISTRIBUTION/DUCT-FLOOR CONSOLE -
REMOVAL).
8. Remove the instrument panel from the passenger
compartment (Refer to 23 - BODY/INSTRUMENT
PANEL ASSEMBLY - REMOVAL).
9. Remove the bolt (5) that secures the HVAC hous-
ing (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).
AIR INLET HOUSING
WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS). Failure to follow the warnings and cautions could result
in possible personal injury or death.
WARNING: On vehicles equipped with airbags, 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 deploymentand possible personal injury or
death.
NOTE: The air inlet housing must be removed from HVAC housing and disassembled for service of the
recirculation-air door.
1. Remove the HVAC housing assembly (Refer to 24
- HEATING & AIR CONDITIONING/DISTRIBU-
TION/HOUSING-HVAC - HVAC HOUSING ASSEM-
BLY - REMOVAL).
2. Remove the recirculation door actuator (1) from the
air inlet housing (2) and disconnect the HVAC wire
harness (4) from the actuator.
3. Remove the two screws (3) that secure the rear of
the air inlet housing to the top of the HVAC housing
(5).
Page 5106 of 5267

4. Release the two retaining clips (1) that secure the
front of the air inlet housing (2) to the top of the
HVAC housing (3) and remove the air inlet housing.
NOTE: If the foam seal on the air inlet housing is
deformed or damaged, it must be replaced.
5. If required, disassemblethe air inlet housing (Refer
to 24 - HEATING & AIR CONDITIONING/DISTRI-
BUTION/HOUSING-HVAC ASSEMBLY - AIR INLET
HOUSING - DISASSEMBLY).
DISASSEMBLY
HVAC HOUSING
NOTE: The HVAC housing must be removedfrom the vehicle and disassembled for service of the A/C evap-
orator, evaporator temperature sensor, mode-air and blend-air doors.
1. Remove the HVAC housing assembly and place it
on a workbench (Refer to 24 - HEATING & AIR
CONDITIONING/DISTRIBUTION /HOUSING-HVAC
- HVAC HOUSING ASSEMBLY - REMOVAL).
2. Disconnect the HVAC wire harness connectors
from the mode door actuators (1), blend door
actuators (2) and the recirculation door actuator
(3).
3. Remove the screws that secure the mode door
actuators and the blend door actuators to the
HVAC housing (5) and remove the actuators.
4. Remove the screws that secure the recirculation
door actuator to the air inlet housing (4) and
remove the actuator.
Page 5107 of 5267

5. Disconnect the wire harness connectors (1 and 3)
from the blower motor resistor (7) and the blower
motor (2).
6. Remove the screws (4)that secure the blower
motor to the HVAC housing (5) and remove the
blower motor.
7. Remove the screws (6)that secure the blower
motor resistor to the HVAC housing and remove
the resistor.
8. Disconnect the HVAC wire harness (1) from the
evaporator temperature sensor (2) and remove the
HVAC wiring harness from the HVAC housing (4).
9. Remove the air inlet housing (3) from the HVAC
housing (Refer to 24 - HEATING & AIR CONDI-
TIONING/DISTRIBUTION/HOUSING-HVAC - AIR
INLET HOUSING - REMOVAL).
10. Remove the two screws (1) that secure the panel/
floor door outlet (2) to the top of the HVAC hous-
ing (4).
NOTE: If the foam seal on the panel/floor door out-
let is deformed or damaged, it must be replaced.
11. Release the two retaining tabs (3) that secure the
panel/floor door outlet to the front of the HVAC
housing and remove the door outlet.
Page 5108 of 5267
12. Remove the three screws (1) that secure the pan-
el/floor door assembly (2) to the top of the HVAC
housing (3) and remove the door assembly.
13. To remove the panel/floor-air doors (1) from the
panel/floor door plate (2), first carefully release
the retaining tabs of actuator coupler (3) located
on the inside surface of the door plate and pull
the actuator coupler out of the pivot shaft of the
panel/floor-air doors.
NOTE: If the seals on the air doors is deformed or
damaged, the air doors must be replaced.
14. Remove the panel/floor-air doors from the panel/
floor door plate.
Page 5109 of 5267
NOTE: If the foam seal for the heater core tubes is
deformed or damaged, the seal must be replaced.
15. Remove the foam seal from the heater core
tubes.
16. If equipped with the dual zone heating-A/C sys-
tem, remove the linkage rod (4) to gain access to
theheatercore(3).
17. Remove the two screws (1)that secure the heater
core tube bracket (2) to the HVAC housing and
remove the bracket.
18. Carefully pull the heater core out of the front of
the HVAC housing.
19. Inspect all heater core foam seals and replace as
required.
20. Remove the screws (3) that secure the floor dis-
tribution duct (1) to the bottom of the HVAC hous-
ing (2).
21. Remove the floor distribution duct from the HVAC
housing.
Page 5110 of 5267

22. Carefully disconnect the linkage rod (1) from the
two blend-air door levers (2) located on the back
of the HVAC housing (3).
NOTE: If the foam seal for the evaporator conden-
sate drain tube is deformed or damaged, the seal
must be replaced.
23. Remove the foam seal (4) from the evaporator
condensate drain tube (5).
24. Remove the fifteen screws (6) that secure the
upper and lower HVAC housing halves together
and separate the housing halves.
25. Release the three retaining tabs (1) that secure
the lower blend door assembly (2) to the lower
half of the HVAC housing (3) and remove the door
assembly.
26. Release the three retaining tabs that secure the
upper blend door assembly to the upper half of
the HVAC housing and remove the door
assembly.
27. To remove the blend-air doors (1) from each
blend door plate (2), first carefully release the
retaining tabs of actuator coupler (3) located on
the inside surface of the door plate being serviced
and pull the actuator coupler out of the pivot shaft
of the blend-air doors.
NOTE: If the seals on the air doors is deformed or
damaged, the air doors must be replaced.
28. Remove the blend-air doors from the blend door
plates.
Page 5111 of 5267

29. Remove the defroster-air doors (1) from the lower
half of the HVAC housing (2) by carefully release
the retaining tabs of actuator coupler (3) located
on the inside surface of the housing and pull the
actuator coupler out of the pivot shaft of the
defroster-air doors.
NOTE: If the seals on the air doors is deformed or
damaged, the air doors must be replaced.
30. Remove the defroster-air doors from the HVAC
housing.
31. Remove the insulator (1) from the A/C evaporator
(5).
32. Remove the probe of the evaporator temperature
sensor (2) from the fins of the A/C evaporator.
NOTE: If the foam seal for the A/C evaporator
tubes is deformed or damaged, the seal must be
replaced.
33. Remove the foam seal (3) from the tubes of the
A/C evaporator.
NOTE: If the foam seal around the A/C evaporator
is deformed or damaged, the seal must be
replaced.
34. Carefully lift the A/C evaporator out of the upper
half of the HVAC housing (4).
AIR INLET HOUSING
NOTE: The air inlet housing must be removed from HVAC housing and disassembled for service of the
recirculation-air door.
Page 5112 of 5267
1. Remove the air inlet housing (1) from the HVAC
housing and place it on a workbench (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HOUSING-HVAC - AIR INLET HOUSING -
REMOVAL)
2. Remove the two foam insulators (2) from the air
inlet housing.
3. To remove the recirculation-air door (1) from the air
inlet housing (2), first carefully release the retaining
tabs of actuator coupler (3) located on the inside
surface of the air inlet housing and pull the actuator
coupler out of the pivot shaft of the recirculation-air
door.
NOTE: If the seals on the air door is deformed or
damaged, the air door must be replaced.
4. Remove the recirculation-air door from the air inlet
housing.