One problem related to starter has been reported for the 1998 Buick Regal. The most recently reported issues are listed below.
Numerous failures - power windows(same window 2x), heater/ac blower motor, turn signals (same direction 3x), alternator, water pump, engine strut brackets, leaky gasket valve covers. Current unresolved problem - failure to start although battery is fine. Replaced ignition switch and starter yet still fails regularly. Next repair, replace a wire in steering column that contacts the chip in the key???.