How to install a new top and bottom hvac heater hose fitting for a 2002 buick lesabre custom

The hoses are moved by turning them a few degree's, then pulling them off. See diagram below.

For 2002 Buick Lesabre 3.8L SFI OHV 6cyl check this procedure to work with the Heater Core...

1. Disconnect the negative battery cable.
2. Drain the cooling system into a clean container for reuse.
3. Remove or disconnect the following:
   Heater hoses from the heater core Right sound insulatorAll necessary electrical connectors and remove the instrument panel compartmentTemperature valve actuatorElectrical connector and remove the HVAC programmerHeater core cover-to-heater assembly screws and the cover Heater core-to-heater assembly screws and the heater core
   
   
   Fig. View of the heater hoses and clamp positions-Bonneville and LeSabre
   
   
   
   Fig. View of the heater core cover-Bonneville and LeSabre
   

1. Install or connect the following:
   Heater core and the heater core-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm) Heater core cover and the cover-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm)HVAC programmer and connect the electrical connectorTemperature valve actuatorInstrument panel compartment and connect any necessary electrical connectorsRight sound insulator Heater hoses to the heater core
2. Refill the cooling system.
3. Connect the negative battery cable.
4. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.

1. Disconnect the negative battery cable.
2. Drain the cooling system into a clean container for reuse.
3. Remove or disconnect the following:
   Heater hoses from the heater core Center console assemblyAuxiliary air distribution ductHeater core heat shield cover from the HVAC moduleAir filter access cover and the heater core cover screwsHeater core cover to obtain access to remove the heater coreHeater core retaining bolts and straps Heater core
   
   
   Fig. Using Hose Clamp Pliers tool J-37097-A remove the heater hoses clamp-Park Avenue
   
   
   
   Fig. View of the heater core cover-Park how to install a new top and bottom hvac heater ho - 519b232.jpgn>
   
   
   
   Fig. View of the heater core-Park Avenue
   

1. Install or connect the following:
   Heater core Heater core straps and retaining bolts, then, tighten to 18 inch lbs. (1.5 Nm)Heater core coverAir filter access cover and the heater core cover screws, then tighten to 12 inch lbs. (1.4 Nm)Heater core heat shield cover to the HVAC moduleAuxiliary air distribution ductCenter console assembly Heater hoses to the heater core
2. Refill the cooling system.
3. Connect the negative battery cable.
4. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.