Will a 2002 Grand Am trans fit in a 2007
Pontiac Grand Prix.
I would have my doubts. May be a different transmission, but even if its the same the electronics will have changed and likely won't be compatible. You can often find that info on wikipeida if you read up on both cars but you may want to consult a transmission shop to be sure. Its a big job to change the tranny and you don't want to do it twice.