hey there,
May be a silly question, but im wondering if there is a way to use my hptuners to reset faulty ethanol content calculations? The truck is a 2010 Gmc sierra, 4.8L v8. I have been having some hard starts in the winter, and have logged it to find that my ethanol content is reading 57% (not possible, i run 87 octane regular unleaded). I dont want to go to the dealer and absorb a 200$ bill.
Thanks in advance (=