Dear All,
I am new to this site and HP Tuners and just starting to learn how to use this great tool. I updated my friends 2010 Silverado trans with a 2012 program to try an fix some of the shifting issues that he was complaining about from 3rd to 6th shifting and he had researched and said to use a 2012 or new program or tables which I have done and seems to have corrected most of the issues however it was also recommended to do a fast learn which we started however when performing this function and selecting drive as described and watching it goes into purging then calibrating drive and then fails.
Does anyone have any ideas while this would fail during drive calibration, we did this three times and failed at the same point.
thanks in advance for any assistance