Hello all,
Im new to this forum and hptuners for the most part. I'm most familiar with Holley Dominator on my race car.
I have a 05 2500hd Duramax i bought from auction and i could tell it had a tuner but the unit was missing. Went to unlock the truck with my MPVI2 and keeps showing failed. All Searches show the PCM is most likely locked from the old tuner. If someone has a stock file can i program over the locked file then go from there with changes?
Thanks in advance
Danny
