i recently had my transmission rebulit. it ran great for 3-4 days, i shut it off for about 15 minutes, when i went to start it again and go i didnt have reverse or any of the drive gears. i immediatly called the guy and asked him what was wrong, he had me put it in 4x4 and try it. so i did and it worked but only shifted into second and third (drive) at very low rpms, and wouldnt shift into OD. i shut it off again after that for about 15 min again and tried again in 2wd, and had the same results, shifted into second and third at low rpms and wouldnt shift again it would only rev to 4000-5000. i originaly thought vaccum line, i noticed a small slice in the line close to where it connected to the trans so i cut it back and put it back on but nothing changed. i cant figure out whats wrong or what would cause this issue. for anyone wondering the year is 1994, its a 3.0l 6cyl, and auto trans. any help would be appreicated