i have hp tuners, i still had to go to the stealership when i was stupid and decided to flash a tune from the repository onto my truck, even when i flashed my stock tune back the SES light never went away, till i went and payed the stealership their 100 bucks for 5 minutes of work, and letting them take my TBSS out for a joyride, a$$holes, i know they beat on it because my instant mileage went from 15.5 when i turned it off to 14 when i got back in.