2017 Buick Envision Complaints

During multiple drives the vehicle completely shuts off when driving or at lower speeds. When this occurs (4 times over the last 3 months) the vehicle has no power or ability to restart creating a major safety issue. You cannot turn on the hazards or anything in the vehicle. The vehicle is still in drive (because you were driving when it occurred) and so you're unable to shift back into park to restart. After some time you are able to restart the vehicle and continue driving.

The contact's friend owns a 2017 Buick Envision. The contact stated that while driving at approximately 45 MPH, the engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that the failure was due to the sensor for the catalytic converter. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted. The failure mileage was approximately 179,000.

Check engine light is on Turbo is failing, underboost code. Very unsafe on roadway due to unpredictable loss of power. The issue has been diagnosed through my local service center. I have not taken it to a dealership yet but will be next week. The issue occurred three weeks ago I believe

The contact owns a 2017 Buick Envision. The contact stated that while driving at an undisclosed speed, the brake pedal seized. There was no warning light illuminated. The contact forcefully depressed the brake pedal to stop the vehicle. The contact stated that upon restarting the vehicle, the message "Service Brake Assist" was displayed, and the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed that the brake vacuum pump and the exhaust camshaft had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 96,000. The VIN was not available.

New tires placed. Oil change next day noted oil leak on differential due to gasket. Mechanic tried to obtain gasket but system told him because my VIN was below a certain number I would need a new differential. Additionally, gasket could not be obtained. Buick knew a problem existed and changed manufacturing, hence, VIN above that certain number has no problems. What all of us below that VIN number?