2020 Buick Enclave

After filling up fuel, vehicle runs rough, hesitates, and stalls at idle speeds. This occurs after every fill up. The check engine light comes on and states an issue with the anti-lock brake system. I’ve had the vehicle checked by Buick 5 times and they have not been able to replicate the issue, so troubleshooting stopped. I know a recall came out this July for 2019 Buick Enclaves to replace the evaporative emissions purge valve due to not fully closing. This is the issue with my 2020 Buick Enclave and is a massive safety concern as the vehicle stalls while driving at slow speeds after fill up. Most recent event occurred on October 5th. I’ve posted a picture from last year that captured the same issue.

The contact owns a 2020 Buick Enclave. The contact stated that on several occasions, the electrical system malfunctioned. The contact stated that the hazard lights inadvertently illuminated, the horn inadvertently honked, and the tire sensor warning light illuminated. The vehicle was taken to the dealer where the failure could not be duplicated; however, the failure recurred. The contact stated that electrical system malfunction again and the vehicle was taken back to the dealer where the vehicle remained. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 28,500.

The rear liftgate locking mechanism failed to latch causing cargo to exit the vehicle where the car behind this car smashed into the cargo causing an accident. For whatever reason the rear door will not lock at all. The fuse was perfectly fine, appears the actuator is defective. No warning was given because the rear liftgate was open and unlatched. After realizing the gate would not close it would notify it was open but the power liftgate operates just fine, and when you activate it, it will push the gate closed and not give a warning until maybe you hit a bump in the road.

The contact owns a 2020 Buick Enclave. The contact stated while driving at an undisclosed speed, the vehicle was inadvertently pulling to the left. Additionally, the vehicle made abnormally loud sounds, and unknown parts detached from the vehicle while driving. The vehicle was towed to the dealer, where it was diagnosed that the control arm, ball joint, and axle driveshaft needed to be replaced. Additionally, the dealer confirmed that the vehicle would be sent to the body shop for the damaged body components. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and dispatched an investigator to the dealer to inspect the vehicle; however, the manufacturer declined to disclose any information. The failure mileage was approximately 33,000. The contact stated that GM authorized the repairs for the vehicle after inspecting it. The contact is still unaware of what caused the failure.

Hello, My Enclave’s back up camera keeps going out and it’s identical to the issue that was under investigation by the NHTSA, which GM ultimately just issued a recall for the Cadillac XT5, XT6 and Acadia models. These cars are basically the short wheelbase versions of the Buick Enclave and the Chevrolet Traverse, and use the same parts for the backup 360 camera failure, so it makes sense that these vehicles would be affected as well. Attached are pictures of multiple times. This is happening which creates an unsafe environment. On the others it appears that it’s a faulty cable. If I turn the car off and let it reset, the camera will work again, but that’s not feasible when in a situation that it is needed immediately. My car is barely out of warranty, I reached out to the dealer and he agreed and it’s the same issue but because these other cars have a recall and mine, doesn’t there’s nothing he can do until a recall is issued. Thank You

While driving my car in normal weather/temperature conditions, the driver side sunroof literally exploded. There was a very loud bang, like someone fired a gun next to my head, and initially I thought someone had shot out one of my car windows with a gun. Upon seeing it was the sunroof I then thought an object had falled through the sunroof window. However, upon inspection, the sunroof window glass was actually blown from the inside out. See attached photographs. There was no prior apparent damage/crack/chip to the sunroof glass or mechanism. There was no sudden change in weather, internal or external temperature or pressure inside the car at the time of the explosion.

OnStar system and WiFi intermittently do not work, was told that this is a known issue when radio is being used, no fix. In my case radio was not being used, so this does not apply. Seat/mirror position memory gradually changes over time. Does not recognize that exit function has been turned off. Signal lights randomly flash (without indicator on dash flashing) when car is at idle & mirrors are folded. Tire Pressure monitoring system, not accurate and will notify driver that tires are underpressured by 10lb or more. Dealership reset them and are now fine. Brakes on passenger front randomly grind since day one of ownership Dealership told me that there is an obvious electrical issue, however since no codes are being thrown, they cannot repair it. Best that can be done is to continue to drive it and show up at a dealership when problems are occurring. OnStar diagnostics was able to determine vehicle was not connecting. Dealership indicated they'd let GM know about the issue, but nothing else could be done for what is a relatively new vehicle. Also was told they would not ensure that vehicle was not affected by structural issues because the VIN was not listed

THE CONTACT OWNS A 2020 Buick Enclave C1. THE CONTACT STATED THAT HIS WIFE REVERSED OUT OF THE GARAGE HOWEVER HAD TO STRAIGHTEN THE WHEELS. THE CONTACT PLACED THE GEAR IN THE DRIVE AND WITHOUT WARNING, THE VEHICLE ACCELERATED FORWARD CRASHING INTO THE GARAGE DOOR. NO AIRBAGS DEPLOYED. MEDICAL ATTENTION WAS CONTACTED. A POLICE REPORT WAS MADE. THE CONTACTS WIFE SUSTAINED INJURIES TO HER BACK AND NECK (WHIPLASH). THE CONTACTS WIFE SUSTAINED A SEIZURE 3 ADDITIONAL TIMES ON THE WAY TO THE HOSPITAL WHICH SHE STAYED AT OVERNIGHT. THE VEHICLE WAS TOWED BY INSURANCE TO A COLLISION SHOP FOR REPAIRS TO THE FRONT-END BUMPER AND GRILL. NO DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED A CASE NUMBER. THE FAILURE MILEAGE WAS APPROXIMATELY 2,000.

TL* THE CONTACT OWNS A 2020 BUICK ENCLAVE. THE CONTACT STATED THAT WHILE DRIVING DOWNHILL AT APPROXIMATELY 75 MPH, THE VEHICLE DECELERATED TO APPROXIMATELY 20 MPH WITH 'CAN NOT SHIFT IN THIS POSITION' MESSAGE DISPLAYED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO SOMERSET BUICK LOCATED AT 1850 W. MAPLE RD, TROY, MI 48084, WHO DIAGNOSED THAT THE FUEL TANK SENSOR WAS FAULTY. THE FUEL TANK SENSOR WAS REPLACED HOWEVER, THE FAILURE RECURRED. THE TRANSMISSION SERVICE REQUIRED MESSAGE WAS DISPLAYED ON THE INSTRUMENT PANEL. THE CAUSE OF THE FAILURE WAS NOT YET DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 7,100.