RAM 3500 HD Truck 2WD L6-6.7L DSL Turbo VIN A (2007)
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.
7. On Mega Cab models, remove the floor console duct.
8. Remove the instrument panel from the passenger compartment.
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).
HVAC Housing - Installation
HVAC HOUSING ASSEMBLY
CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system. Failure to properly adjust the refrigerant
oil level will prevent the A/C system from operating as designed and can cause serious A/C compressor damage.
NOTE: When replacing multiple A/C system components, refer to the Refrigerant Oil Capacities chart to determine how much oil should be added to
the refrigerant system.
NOTE: If the A/C evaporator is being replaced, add 60 milliliters (2 fluid ounces) of refrigerant oil to the refrigerant system. Use only refrigerant oil of
the type recommended for the A/C compressor in the vehicle.
NOTE: Replacement of the refrigerant line O-ring seals and gaskets is required anytime a refrigerant line is opened. Failure to replace the rubber O-ring
seals and metal gaskets could result in a refrigerant system leak.
