i have 2011 silverado 1500 i purchased a auto cal tuner and went through the whole process of getting tunes for it, i have finally got the tunes in and downloaded them to my auto cal went to the the truck and installed them on the truck, the transmission tune downloaded fine but the engine tune not so much once it flashed the program it brought up a code $06FF and now my wont start.
has anyone had this problem before