WHEN SLOWING FOR INTERSECTION AND THEN ACCELERATING OR TURNING CORNER THERE IS A SLIGHT HESITATION AND LITTLE JERK LIKE IT SHIFTS UP TO HIGHER GEAR
WHEN SLOWING on 2004 Buick Century
Have you checked the fluid level in the transmission? I would start with making sure it is at the correct level. My intial reaction is an internal transmission problem, but without actually feeling what you are describing, it is hard to say.