Forum Discussion
Service Driver Assist System
After 5 or 6 service appointments for the same issue (started in August 2025 with only a couple hundred miles) the dealership provided this information: It is a known issue. GM does not have a repair or correction as of January 9, 2026. There is a Service Bulletin, Preliminary Information - Technical. PIT6455. If there is a resolution, PIT6455 will become a TSB with instructions for the “fix”.
Thank you for bringing this to our teams' attention. We truly recognize the impact that multiple dealership visits for ongoing concerns can create, and this is never the type of pf experience we wish for you to have. While we are glad to know you have been in close communication with your preferred dealership, we understand how difficult it can be to hear of this wait time in a repair matter. Please know, we do have full trust in our GM certified dealership teams as they are able to use their technical training efficiently. Please know, if you currently have any other questions or concerns at this time you may send us a private message to Onstar_Support.