Forum Discussion
2025 Buick Enclave - Ongoing OnStar / Battery Drain Issue
My brand new (7 days old) 2026 Enclave is in the shop waiting for this part because OnStar continues to drain the battery and the car won't start after sitting overnight. GM and the dealerships are well aware of this issue as it's been going on for over a year. We were told GM won't change anything because "it doesn't happen to every car," so they'd deal with it as it happens. They clearly don't give a sh*t about doing the right thing. This should be criminal.
This isn't the new Enclave ownership experience we wish for you to have. It's our goal to make a good first impression, and it doesn't sound like we've met that mark. If you would like an additional layer of assistance through this process alongside your dealership, please feel free to private message OnStar_Support with additional details. Just select the envelope icon at the top right of your screen to get started.