2020 Buick Enclave owner complaints

The mounting bracket on the front exhaust pipe separates from the pipe. This issue has been identified on 2019 and 2021 models and special coverage adjustment N212356540 Front Exhaust Pipe has been issued. The same exact defect has occured to my 2020 model Enclave.

2020 Buick Enclave mounting bracket separated from the front exhaust pipe which caused a hole to appear in the exhaust pipe. This is a known issue for 2019, 2021, and 2022 Buick Enclaves. No warning light The exhaust fumes along with Carbon Monoxide were coming through my ac vents for several months. There is no indication on when the mounting bracket separated.

My vehicle is taking oil into the engine and is available for inspection. The mechanic says some component in the engine is taking in oil. I am losing about 3/4 of a quart every 500 miles. He said his best estimate is in months to a year it will blow the motor. I have not taken it to a dealership just the mechanic company I use. No I got a message saying that I needed to add oil about 2 weeks after an oil change. My mechanic checked the oil levels for a couple weeks after that. And thats what I was informed after checking oil levels.

Front exhaust flex pipes had to be replaced. It’s a common problem and a recall exists for the prior year.

The vehicle's exhaust intermediate pipe mount has broken has caused damage in the intermediate pipe requiring both the be replaced. The cracked exhaust allows exhaust fumes to enter the passenger compartment. A recall (N222385510) for 2021 Chevrolet Traverse has been made however is addressing this on only the 2021 models, even though the same issue is applicable to other models. On the this forum, there are several complaints of this design flaw reported. https://gmauthority.com/blog/2023/06/gm-to-fix-2021-chevy-traverse-front-exhaust-pipe-issue/

My car started making a loud and rattling noise and when I had my vehicle looked at there was a huge crack in my exhaust pipe which could potentially be leaking harmful toxins in the cabin of my vehicle. I have been to so many places who say they don’t have what they need to repair this and that I need to reach out to GM. I have seen over 30 similar stories in these complaints. This is very unsafe and something needs to be done about this for the 2020 model as it has been done for others. We are afraid to even keep all the windows rolled up with our children inside for fear of carbon monoxide leaking through.

The front exhaust pipe bracket has broken. Upon investigation, this is an ongoing issue for 2018-2019, and 2021-2023 Chevy Traverse and Buick Enclave models, but NOT 2020. All of the models use the exhaust system and same bracket, and it should be included as a special coverage. In fact, the attached picture of my vehicle will show that it is an identical break to those pictures used in the previous bulletins. Any help is appreciated. Reference: N252503850, N242445280, N222385510, N212356540, and photo attached.

The Front Exhaust got a hole and rusted through as in similar years. This Exact issue is covered for both the 2019 and 2021 Models of the Buick Enclave under a special coverage adjustment (N212356540 and N222385510), but not for the 2020 model. It would seem to follow that if the year prior and after both have this issue, then the middle year should also be covered under a special coverage as the problem had not been fixed. The vehicle is currently getting service done for this exact issue covered under the special coverage adjustments and poses an environmental hazard as the exhaust is not going through the catalytic convertor and dumping pollutants directly in the the air. The only warning was a rattling noise when shifting and according to dealership is most likely caused by the bra

Shift gear won't go into park. Emergency brake locked. Had dealer look at it and apparently a valve is blocked in transmission. Seen a number of complaints about transmission issues on this particular model yet this Vin is not on recall. GM says it needs a whole new transmission which will be $10,000. Really?? The least they could have done was fix this vehicle in good faith because of past recalls. Now I'm stuck with no vehicle and still paying for the finance.

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.

Rear sunshade clip has broken twice in the 5 months.

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.

When starting our 2020 Buick Enclave I noticed the low voltage battery light stayed illuminated after startup. A message followed on the message center located in the center of the gauge cluster. The message read Service Electrical Charging System. Followed by a message stating Low Voltage Vehicle Ma Stall. This particular vehicle only has 38,000 miles on it and I have not experienced any issues with the electrical charging system prior to this incident. There have been no indication as to the battery or alternator failing (ex. dim lights, flickering lights, malfunctioning electronics/electrical equipment, unusual noises coming from engine bay). I acknowledged the messages with the button on the steering wheel. I proceeded to drive and the low voltage light went off shortly after. I procee

I came to a stop in the left turn lane at an intersection with a red light with the car in drive and my foot engaged on the brake to wait for the light to turn green. The car suddenly and completely died and all power was shut down. I was not able to engage the hazards. It was dark outside and I was afraid cars behind me would hit me. It was an incredibly dangerous situation with no warning. I exited the vehicle and got to the side of the road. The police arrived and were able to push the car to the side of the road as well. I opened the hood and checked the negative battery terminal and upon pulling the lever, the power came back on. We have an appointment at a GM dealership on Monday to fix the issue to ensure we are not put at risk again.

Vehicle would not go into park fortunately we were in a safe location to avoid a possible accident or injury. The vehicle has electronic transmission shifting. According to the dealership the park solenoid in the transmission valve body failed. This prevented us from putting the vehicle in park so it could safely be shut off. We were able to set electronic parking brake but ignition continued to remain on. Eventually had to disconnect the negative battery terminal. Had vehicle towed to dealership but could not release electric park bake or start vehicle with battery terminal reconnected. This is becoming a common problem with this transmission, so common that parts are on back order. This could be a very unsafe problem with this vehicle in the right circumstance. There should be a reca

Vehicle jerks at low speeds when accelerating. Brakes grind when applied at hard braking or regular braking.

The contact owns a 2020 Buick Enclave. While the contact's wife was attempting to park the vehicle, the transmission failed to shift into park as needed. The contact stated that after several attempts, the vehicle was parked. The contact used bricks to chock the wheels to prevent the vehicle from rolling backwards. The vehicle was towed to the dealer. The vehicle was diagnosed with a failed valve body and internal transmission failure. The contact was informed that the transmission needed to be replaced. The manufacturer was contacted by phone and a case was filed. The failure mileage was approximately 58,000.

Factory running boards on 2020 Buick enclave ice up in winter driving blocking the driver and passenger doors from opening. Vehicle can be parked and if ice accumulates or snow melts and freezes the door will not open. If vehicle is in motion and ice/slush build up and freeze the doors will not open.

I was driving on a state highway with open fields on both sides. There were no other cars or trucks on the road. Clear blue sky and the temperature was about 50 degrees. No windows were open in the car. I was on cruise control at 62 MPH. There was what I can only describe as an explosion sound something close to the sound of a 45acp pistol discharge.. Luckily I had the sun screen closed or I would have had glass everywhere. The front sunroof had exploded and there was a 18" hole in the middle of it. The force of the break went up, meaning the edge of the broken glass was raised about an inch and a half above the rest of the glass and window frame. That kind of a break is caused by stress not from something like a stone hitting it.. The car was purchased in august so the car is on

Vehicle suffered a catastrophic, uncommanded electronic and mechanical system failure within 30 days of purchase, resulting in a severe crash.Prior to the incident, the vehicle exhibited a violent, unexpected jerking motion while accelerating up a highway on-ramp, though control was briefly regained. A few days later at the end of May, while driving in the rain, the electronic systems completely failed with zero dashboard warning lights or error messages appearing.The vehicle completely overrode driver input, veering uncontrollably from lane to lane on its own. Simultaneously, a total loss of braking power occurred; pressing the brake pedal had no effect on reducing the vehicle's speed. To stop the runaway vehicle and prevent hitting other drivers, I was forced to intentionally steer the S