Same Just happened to me-2019 Sierra 1500 SLT, 67xxx kms-Message on the DIC to "Service brake monitor system". Brake life monitor was reset at dealer when the software update was done for that EBC recall maybe 1.5 years ago. % went from 94/95 Fr/Rear +- to the service message just last week-Jan 14/23. This truck has the Duralife rotors and I can't imagine needing a full pad/rotor job at this time. I bought the truck thinking that the Duralife brake components would stand for many kms. If just changing out the parts (pads + rotors aren't fixing this issue +, infact creating other issues, as reported-"limp mode"), then what can be done to resolve this known issue-this is a $70k truck!!
Help me please GM...