sounds like same problem I'm having. Shutters from a stop when accelerating or accelerating from a slow roll(under 20 mph). I back off gas and re-accelerate and transmission performs fine. Only happens very intermittently. once maybe twice per day.
Hey what's up man. I'm the guy that you helped try to find a caprice a couple of months ago. I'm from Fayetteville NC. I got a 94 9c1. I'm going to put up pictures but I don't know how on here. I may just put them up on my Facebook page. Anyway hope you car is coming a long good. I've put a dub din radio and tinted the windows. I have an impala trunk with the spoiler I need to put on just haven't had time yet bc I have to re wire my trunk button so I can pop it from the inside of the car. Hit me back