blower motor not working on high on 1999 Pontiac Bonneville

my blower motor on my ac will not run on high speed . It wotks fine on the lower speeds but when you turn it to high it just quits. Can some one please point me in the right direction .

Asked by for the 1999 Pontiac Bonneville
it has a bad resister for the switch, look up blower motor resister for that model