Forum Discussion
Error message in DIC shows "Service Driver Assist System"
I recently purchased a 2026 Sierra Denali specifically to get Supercruise. I have the same issue unfortunately. Had the truck in the shop three times in a month. I am surprised this has been around for over a year and still no fix - not even a technical bulletin at this point. I guess it just isn't a big enough problem for GM but to the owners who put their trust in GM, it is a very big problem.
Get OnStar involved and be relentless. I had to advocate for myself. They will not take any action to resolve the issue unless you force the dealer to interact and keep pursuing a solution.
We hear and appreciate your feedback @catman29. Our teams are always here and happy to get involved for assistance to the best of our abilities alongside your local dealerships. Don't hesitate to send us a private message at OnStar_Support to get connected.