im thinking about getting subs from my 2000 GMC jimmy and it has a stock radio and i was wondering if it has the sub plug ins or not?

No there are no inputs or out puts. I have a 99 jimmy and I did the same thing amp,subs. You have to go to radio shack and they make a box that you put behind the radio so you can hook up an amp and subs it runs about 40 dollars and works great.