ok guys, my truck wont shift gears, and I think its something in the tune.. First off it starts off in 3rd and you can manually shift it to 2nd but no over drive and no 1st.. The pcm that im using is 00 camaro but it was butted up to m6.. I am using a 4l60e.. i was wondering if i needed to do a write entire and upload a stock camaro/automatic tune.. other than that I have no clue where to turn..