Consumers have filed a total of 43 complaints related to Buick SERVICE BRAKES.
Tried to stop before a red sign on a city street, the car accelerated on its own, passed the red light and run at about 60 mph on a 35 mph street for about half a mile and then stopped by itself. Pressing the brakes and even putting it on park did not help. I am lucky to be alive with my two passengers, and lucky not to kill anybody or cause property damage.
While driving the car the electronic parking brake turned on (without the driver commanding it), stopping the rear wheels from rotating freely, making it very difficult to drive the car. The car was in motion when this happened. This has happened 3 times, on the second time the dealer was able to see the problem and performed a "calibration" but the problem happened again about 1 month later (last night 7/23/19) and left the car stuck in the middle of an intersection, requiring a tow truck to move the vehicle - we took the car to the dealer. The car is currently at the dealer awaiting a diagnosis. I have also contacted gm reporting the problem but they are saying without seeing the problem they won't be able to do anything. This is a relatively new car, 2018, bought in march 2018 and has 24500 miles. Pressing the parking brake release button did not release the parking brake when the problem happened, nor did the automatic brake release process work. There was an error message on the dashboard reporting "service parking brake"
On wednesday, july 10, 2019 i slid onto a shoulder taking a turn and punctured my rear passenger side tire. I replaced the tire with the spare, drove to work (less than 10 miles) at speeds below 50 mph, then drove home and scheduled to have the tires replaced the following morning. On thursday, july 11, 2019, i backed out of my parking spot at my home and started going down my very steep mountain driveway. I applied the brakes like i always do (my foot is always on the brake pedal going down) and received no response. The pedal felt normal (not soft), but the brakes did not engage. By that time my car was going very fast (because of the very steep slope), and i was struggling to keep it on the road, while trying not to hit another car passing by my driveway and not to fly across the two-lane road into a creek. I could not spare a hand for the emergency brake. I had to take a very sharp right turn from my driveway to slow down the vehicle. I didn't hit the other car or end up in the creek but i clipped my passenger side mirror and one of the passenger side panels. Once down and on even ground, i was finally able to use the emergency brake and stop the car. After a brief pause, i started moving again, and regular brakes worked normally. Two subsequent brake system checks (one at the tire shop one at a gm dealership) showed no issues. I was told there are no bulletins or recalls for anything like it. I looked on buick and gm forums and found at least two reports of a similar problem - brakes suddenly not working and then resuming function again. There are two complaints on this site describing similar issue - id # 11100704 and 11083404. Fixing the mirror alone would cost $900 according to the gm dealership, however, i am not seeing anything regarding gm investigating the issue closely.
I have an automatic transmission. When i am stopped at a traffic light on an incline, the car will sometimes roll backwards with my foot on the brake or when changing my foot to the gas pedal to move forward once the light changes. The more the incline; the worse the problem.
TL* THE CONTACT OWNS A 2019 Buick Encore. WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL, THE PEDAL TRAVELED TO THE FLOORBOARD. THE CONTACT HAD TO PUMP THE BRAKE PEDAL A FEW TIMES FOR IT TO FUNCTION PROPERLY. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO STILLWATER MOTORS (5900 STILLWATER BLVD N, STILLWATER, MN 55082, (651) 400-2908) ON APRIL 3, 2019 WHERE IT WAS DIAGNOSED THAT A NEW VACUUM PUMP NEEDED TO BE INSTALLED; HOWEVER, THE SAME CODES DID NOT APPEAR THE FOLLOWING DAY. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND DID NOT ASSIST. THE FAILURE MILEAGE WAS 3,000.