1997 Grand Prix GT 3.8L

I bought my car from my uncle, and when I was talking to my grandfather, he mentioned that my uncle had to do something to the car before or after he removed the battery.

I can't find anything online about it, but I know their are some vehicles where you can't just pull the battery out without ****ing up the computer or somesuch, so I'm paranoid about damaging the vehicle.

I gotta clean the contacts as their too corroded to be effectively jumped with, unless it's safe to clean them while still hooked up.