1995 Buick PA Intermittant controls

Torque converter lock up and cruise control operate on and off at will, traction control and change oil light flash off and on. This all started after I had a new battery, rebuilt alternator (original from car) and serpentine belt replaced. As of last time driving, it seems the torque converter is locked up all the time and cannot get cruise control to come on at all now, but dash lights still turn off and on.