So, I am new to this forum, but long story short, I am in a robotics club at school, and we have a Chevy 6.2 powered "20" series step van. As far as the mentor has told me, somethings up with the tranny, but its been years since it has literally moved. I'm thinking that i just go over it (brakes, oil, trans oil, fuel, etc...), and them try to start it. Does anyone know what might be wrong with the trans? My first thought is clutch packs are toasted!

 

telling the year and model of trans it is equipped with might get you more info?