Security Light is on..
I did program a new tune, so I'm guessing I just fudged something up....
Any ideas?
I did a DTC run. It showed: 1626 - Theft Deterrent Fuel Enable Signal Not Received

Thanks.
Kyle
Turn on the truck to "run" and let it sit until the security light goes off (can take a looooong time)
Turn off the truck for 5 minutes
repeat three times
If that doesn't work or if the security light doesn't go off, turn on your lights, disconnect the battery and wait about 5 minutes. Reconnect and see if it worked (this method didn't work so well for me and I eventually found the first method and it worked).

