First thing you need to know is what kind of tranny you have. 700r4, 4L60, or a 4L60E. If its the stock trans its most likely a 700r4. If you look on youtube you can find some videos that will show you how to install the pump/clutches ect. I'd recommend getting a Haynes GM Transmission manual though. It has great step by step pictures. If your going to rebuild it I would also suggest getting a Transgo 700r4 Jr kit. It eliminates the notorious throttle valve sticking issue. Also use a corvette servo for more aggressive shifting. Good luck. Hope this helps you out some.