One day my 2000 chevy siverado 1500 z71 just completly would not move anymore. It wouldn't go into gear anymore. Now if i were to turn truck off for a bit and turn it back on it would go back in to gear but it would slip really bad. I also would turn truck off then turn the truck on and it would go in reverse then forward with no problem then give out an wont go into gear no more. Any Help?