a/c dont blow hard on 1997 Buick Park Avenue

when i have it on heat the blower motor blows hard but when i go to a/c it hardly blows anything even with the hard turned all the way up

Asked by for the 1997 Buick Park Avenue
You could have a blower motor resistor failure. Have the circuit inspected.
not resistor if it works on heat

It could be that the door that directs air flow could be a problem, or it could also be that the evaporator ices up for some reason preventing air flow with the AC on cold.