goosemanx, i maxed out all the tire sizes and still no change to my speedometer . thanks for ure help . mike has a copy of my stock program and maybe they can figure out whats wrong . thanks again.

ok ill give it a try thanks

06montess, have u had any luck getting uresfixed???

goosemanx , ive emailed them a download of my stock program so they can see what the problem is. They think my truck had a dealer change the reprogram the tire size and that overides the v7193. maybe this will help u to.

u7193 , 9rxx , 04 chevy avalanch, programer will not correct mph , 35in tires and 4.56 gears , 9 mph off at 70mph ure actuall doing 61mph . no matter what i change the gear ratio or tire sizes to the speedometer stays off the same amount. thanks for any help.