So i installed my 4l80 installed the frost subharness and the directions seem to be written for a hp unit has anybody used there harness that maybe able to help im stuck. I had tunes through my purchaser of efilive but there supplied 4l80 tune has resulted in a 1870 code and no responce from them on what to do or actually no responce at all. Ive put about 50-60 miles on it and as of now have stopped driving it for fear of burning either the trans or triple disc converter up. Any help greatly appreciated thanks in advance