If the display is blank it isn't any sensor. If the sensor went bad it would just stay stuck on a certain mileage or show all zeros. Scan tool won't change that at all. If both the ABS and Brake lights are on that could be any part of the ABS system, a common area for that is the ABS module itself failing. The scan tool issue is because it's a 2500HD, They use a slightly different protocol on the heavy duty version and most of the lower cost tools won't access it, a dealership should have one that will however many regular shops only deal with cars and light duty trucks. There were a bunch of TSBs and service items on those trucks over the years but to know if any apply you would need the proper scan tool for it. My Genisys EVO shows as having the proper software to talk to all the systems on that truck, so that tool might be an option as would many of the equivalent tools like the GM Tech 2, or even a brick (MT2500) if you can get the correct cartridges. The Genisys scan tools are available on the auction site all the time, the newest ones cover up to 2015 but any of them that cover say 2004 or higher would be up to date enough to work with your truck, I wouldn't go back to 2002 as many times they add items as the vehicles age and that may not be in the 2002 software yet it would be in the 04 or higher. They are not the fastest tool out there but they are a solid tool.
Thursday, July 22nd, 2021 AT 4:20 PM
