Thanks for all the replies. Car is running again. The expert mechanic from the shop, he personally looked at my car since he worked on many different years of Buicks (Been a mechanic most of his life, worked on cars in New York, now in Texas where I'm at). Says with my model and year, he's seen them just once electrical issues just happening from age and whatnot, the car can just be picky, good brands or not. Good news is its not an engine issue. The starter was not giving it enough juice to fully turn over to allow them to even get started on seeing whats up with the ICM. Thankfully a lot of my stuff was under warranty since I got work done. He replaced the starter ( which they actually had to go through 2 or 3 swaps of them because each one wasn't giving them problems, he demanded they give him a new starter and not remanufactured and it started right up with the new). From there he re-replaced the ICM (dialectic grease underneath), spark plugs, cables, all under warranty. The other thing he did was that noticed the positive clamp for the positive cable was not holding a good grip on it regardless of how much he tightened it so he replaced it with a new clamp and made sure it had a solid connection. As of now, I drove it today and had no problem so far though still on edge with all the stalling that has happened. I do personally feel it being still a bit different since all this started (acceleration being the main notice. just doesn't accel as quick from what I remember but maybe I'm wrong. Its an old car but I've done a fuel injector service. The time it felt normally is when I used my AC Delco ICM brand but I'm not gonna touch anything. If anything maybe replace MAS and MAP.) So right now everything is working. Thank you all for the reassurance and help!
