2018 Buick Enclave Engine problems

The contact owns a 2018 Buick Enclave. The contact stated that while driving at various speeds, the vehicle shut off and failed to restart. The vehicle was towed to the dealer, where the alternator was replaced 4 times before the dealer diagnosed that the failure was due to oil leaking onto the alternator and the battery. The contact stated that the alternator had been replaced 6 times in total. Additionally, the contact stated while pulling out of the parking lot and onto the road, the vehicle shut off. The...

Exhaust leak from broken front exhaust pipe. This has been a known defect in this make/model however the year of my vehicle was not included in the extended repair window and should have been. The exhaust leak was identified by the dealership when the vehicle was taken in for other maintenance. I had to pay for the repair myself and would like to be reimbursed due to this being a manufacturer known defect with the exhaust pipe. The exhaust leak caused unusual noises, a loud roaring, and reduced gas mileage. This was also a danger for carbon monoxide exposure.

The contact owns a 2018 Buick Enclave. The contact stated that after picking up the vehicle from the dealer for a different failure, the exhaust pipe made an abnormally loud sound while driving. The check engine and other unknown warning lights were illuminated. The vehicle was taken back to the dealer, who determined that the catalytic converter had failed and informed the contact that the catalytic converter and the front exhaust pipe needed to be replaced. The vehicle was not repaired. The contact related the...

Wednesday August 6th 2025, I was coming home from work, the low engine compression and engine light came on the car was shaking and I lost power on a busy road, I had to pull it off the road quickly before I lost all power. I stayed there for a few minutes, then turned the car back on to retreat to a safer spot, I then waited for my husband to bail me out, we checked the oil on the dipstick, there was minimal oil on it. We added 1 quart of oil, then the lights went off, all seemed fine. August 23rd 2025, I was...

I am a [[redacted]] and owner of a 2018 Buick Enclave that suffered a catastrophic transmission failure which nearly killed me and my child. On Friday, [[redacted]], while driving westbound on [[redacted]] from Edison, NJ to my home in Easton, PA, my vehicle suddenly and without warning came to a complete halt in the fast lane. A driver tailgating me swerved at the last second to avoid impact. Moments later, when I tried to move again, the car lost all power and drifted helplessly across two lanes of speeding...

The car shuts off at random when coming out of autostop, the car will disable power steering when coming out of autostop to make turns making it difficult to turn the steering wheel. Coming out of autostop is typically when you are trying to go or make a turn. This has been an ongoing issue that happens often. The issues began around 60k miles.

My car starting sputtering on take off from stops, extremely dangerous if you're trying to get out in traffic and keep up quickly from a stop. Then when I took it to get looked at it the mechanic said it needs a new transmission. Now my family is stuck because that's our only vehicle big enough for our growing family. They're was a check engine light that keeps coming on.

The contact owns a 2018 Buick Enclave. The contact stated that while idling or at a complete stop, the vehicle lunged forward upon acceleration. The contact then stated that while shifted to park, the vehicle inadvertently started. The contact also stated that she heard a screeching sound in the wheels while shifting in the first gear, and intermittently in second and third gear. Additionally, the contact stated that the check engine warning light was previously illuminated; however, after driving the vehicle, the...

The car has an auto-stop feature however at times, when the car is stopped, the entire electrical and engine shuts down even while the car is in drive. The driver must restart the car and put the car into park and then back into drive. When the car restarts, several lights/messages turn on including "Service Transmission" and the "Service Parking Brake" message and parking break light. This is a safety and hazard issue as it has happened while in traffic on the freeway when at a standstill.

While at a stop sign at a busy intersection, pressed brake and tachometer went to off instead of auto-stop. Engine still on but pressing gas didn't do anything.. Transmission light went on. Had to push the start/stop button a few times before engine turned off and on again. *Tr

Shortly after getting gas, the car will rev to 2-3rpm when lightly accelerating, and seem to "run rough". Then, after coming to a stop at a traffic light, the car will auto stop and then shift into neutral. I can not shift back into drive without pushing the start/stop button to restart the car. It does not happen every time I get gas, but all 3 times it has happened have been after getting gas. The first 2 times it happened, I was told there was a recall, which was the cause, but this last time, there was no...

During normal commute, vehicle began bucking badly, would not accelerate and began rolling backwards. Check engine light illuminated. Shut vehicle down, restarted, and the problem seemed to clear. Brought vehicle to dealership, found codes p0011, p0014, p0021 and p0024 set. Dealership contacted gm, who acknowledged the issue but offered no fix. They are still studying the issue and have no resolution. Dealership cleared codes and released vehicle back to us. Issue may return at any time. How can I trust my...

The "start stop" feature caused a life threatening hesitation upon acceleration from a full stop at an intersection. Enclave does not offer any override for this option. There must be a firmware update provided by gm to allow it to be disabled!!! This is going to kill somebody!!!

2018 Buick enclave. Consumer writes in regard to engine shuting down when vehicle stops. *As the consumer stated the start stop feature intermittently shuts down the engine when the vehicle is idle and does not recover quick enough for safe starts in traffic. *Js

Tl* the contact owns a 2018 buick enclave. While the vehicle was at a stop, it stalled and hesitated to move. The contact stated that the automatic stop feature on the vehicle caused the failure. The vehicle was taken to cannon chevrolet buick cadillac (100 n thacker loop, oxford, ms 38655, (662) 550-4208) where the contact was informed that the vehicle was built with the automatic stop feature and there was no remedy to repair the failure. The vehicle was not repaired. The manufacturer was made aware of the...