Looking for a tool with instructions on how to program and ABS module. I have been told the GM TechII can do it. I cant find any local shops that have any idea about what that programming is. Issue is after a 4.88 gear swap front and rear with the PCM update the ABS light is on all the time and it reports a 3mph speed error from wheel sensor even when stopped. Speddo is dead on less than 1 mph error vs RADAR and GPS from 25 to 90 mph on speedo. VSS has been changed twice no change. In icy road conditions ABS still works and bypasses to prevent skids. Sure would like to get lite to be responsive. Any advise is appreciated.