sorry guys ive been at work for over a month now i just got home.my diablo sport reads rpms on both the input and output shaft sensors. i will take my truck to the local shop and monitor the sensors with there tool.the rear end doesn't make any noise. im just lost with the whole abs module not communicating thing

. i might try to trace the wires from the abs module to the pcm.does anybody know which wire that would be.thanks for your replies