2002 hvac

[Popajoe6452]

My 2002 Silverado Ac air flow acts plugged up after being on road 3-4 hours.

[txab]

Sounds like your evap core is freezing up. Check refrigerant for a full charge. Switch from recirculate to outside air. Also try increasing blower speed possibly

[muddkatt]

Change the cabin air filters.