Forum Discussion
OnStar Light Red - Service Driver Assist Message - '25 Sierra 1500 Denali Ultimate
I purchased a new '25 Sierra 1500 Denali Ultimate about a month ago. At about 900 miles I got a 'Service Driver Assist' message every time I started the truck, and the Supercruise function would not work. The light adjacent to the OnStar button was also red. Everything else was working fine.
Then after a few days, the OnStar suddenly light turned green again and Supercruise was fine again, no more Service Driver Assist message.
Thought I was in the clear but suddenly today the red light and the error message is back, no Supercruise.
I assume a hardware issue but if the module was dead would it work intermittently like this?
Frustrating as this is an $85k truck and these features were a key factor in my purchase decision.
1 Reply
Our team does understand your frustrations. Thank you kindly for bringing these technical concerns to our attention. To clarify, have you brought your Sierra into your certified GMC dealership for an appointment related to your OnStar hardware? Our team would like to help in any way that we can moving forward. If you need assistance alongside your service center, kindly send us a private message. Just select the envelope icon at the top right of your screen to get started. When creating a new message, please be sure to enter Advisor_Helen to get connected directly to me.