JustAnotherDude
Junior Member
Just picked up a 2020 3500 6.7 w/Aisin. Dash intermittently turns into a Christmas tree with all systems going offline and ding ding ding. Happens randomly. Shop had numerous ABS "lost communication" codes with a few TCM "lost communication" codes. Any chance this is similar to the ABS/HCU issues 2017/2018's were having? Anyone have schematics showing where the ABS and TCM can-bus connections are?