- Buick Ownership
- 2016 Regal AWD T
Took my car back to the dealership today for a pretty strong vibration from the drivetrain. You can feel it in the brake pedal and floorboard. It’s worse with the A/C on so I assumed it was something with the engine and feared a pending piston issue. They had the car about 2 hours and checked the engine out and the entire drivetrain and couldn’t find the source. They’ve reached out to GM for a possible answer so I’m waiting on that. Anybody else experience this?