2018 Buick Enclave

The contact owns a 2018 Buick Enclave. The contact stated that while at a stop light, the accelerator pedal was depressed; however, the vehicle failed to respond as intended, with a grinding sound coming from the transmission. A bystander pushed the vehicle to the side road, and the vehicle was later towed to the residence. The contact’s husband inspected the vehicle and determined that it had experienced transmission failure. No further information was available. The vehicle was not yet repaired. The manufacturer and local dealer were not contacted. The failure mileage was 110,000.

My vehicle has begun all us sudden flickering headlights from low beams to high beam when driving and also it ay the airbag safety light turn on with the locks also doing a closing and opening while driving.

The contact owns a 2018 Buick Enclave. The contact stated while stopped at a gas station; after refueling the vehicle, the vehicle was restarted but was unable to shift to drive(D). The contact attempted to shift to reverse(R) and the shift lever failed to respond. The contact stated an unknown warning light was illuminated. The vehicle was towed to a local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 71,000.

Several times I have been stopped at a red light, and my parking break will come on without me engaging it. I was almost hit by other vehicles the last time my vehicle did this. People were blasting their horns and speeding around me because I was unable to move my vehicle. Because I had not manually engaged my parking break, my vehicle would not allow me to disengage the parking break until after it finally read that I engaged it. It took me 10 minutes of having to turn my car off and back on and trying to engage the parking break manually before the vehicle finally noticed it was engaged and would allow me to disengage my vehicle so that I could move it out of the way. This has now happened 3 separate times in the last month. It is an extremely dangerous situation and is making me become nervous to drive my own vehicle.

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 failure to Special Coverage Adjustment: N212356540 (Front Exhaust Pipe); however, the VIN was not covered. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 100,000.

I am a [XXX] and owner of a 2018 Buick Enclave that suffered a catastrophic transmission failure which nearly killed me and my child. On Friday, [XXX], while driving westbound on [XXX] 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 traffic, directly into the path of two tractor-trailers barreling down at highway speeds. This was the hottest day of the summer, and I was left in terror, fully aware that one wrong move would have ended our lives instantly. The fact that my child could have lost their only parent because of a mechanical defect is beyond unacceptable. The stress, fear, and trauma of this incident cannot be overstated—it was a near-fatal event that never should have happened. My mechanic has since confirmed the transmission is destroyed, with black metal fragments throughout—clear evidence of internal failure. Only two months earlier, in June 2024, the car passed inspection with no codes or signs of a problem. This was not wear and tear; it was a hidden, catastrophic defect. In December 2024, GM recalled more than 461,000 vehicles, including certain 2018 Enclave models, for transmission defects leading to rollaway and internal failure. Source: The Lemon Firm, 12/18/24 [XXX] ). My case mirrors the defect exactly, yet I never received recall notice. I demand GM confirm my VIN’s inclusion and cover the full cost of repair or replacement. I barely escaped a fatal crash. GM must act immediately before lives are lost. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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 driving my car and the same thing happened car lit up with low engine compression and engine light came on car was shaking, I shit the car off. we added 1quart of oil. But the engine light stayed on after about 30 min. I shut the car off. The engine light went off after I shut the car off.

The torque converter is failing it seems this is far too common and dangerous with all Buick enclaves for this year. The vehicle shakes when applying the gas not having the power it needs to keep a steady speed without shaking. A mechanic stated the torque converter is bad known as the “GM shutter”

Check engine light was on due to the EVAP Purge Solenoid not sealing properly and causing a leak. Scan testing performed of the engine control module and diagnosed/cleared DTC P0496-00. Vehicle was brought to a dealership for repair.

mY VEHICLE STOPPED IN THE MIDDLE OF THE HIGHWAY AND WAS UNABLE TO PUT IN DRIVE

The headlights continously and irregularly flicker between high and low beam while driving at night. I have no control over it and cannot turn off the high beams when they activate. This is highly annoying to drivers ahead me, as they believe I am trying to get their attention (or be obnoxious). In these times and the legalization of open carry weapons in the state of Florida, this can be highly dangerous if the wrong person is aggravated by unintentional signaling. I have already had issues on the road with drivers not happy with the high beam flicking on and off at them while driving on the road. They have become very aggressive, following, slowing down, honking at me because they think I am being impatient or trying to tell them someting is wrong. I spent $2000 in January 2025 trying to get this fixed and it has started (December 2025) happening again.

The brake system ABS module/sensor malfunctions- yes it is available for further inspection. Safety is an issue due to the ABS indicator light on. Yes, the problem/issue has been confirmed by a dealership. No inspections have occurred other than the dealership. The only warning is the light indicator for the brakes, parking ABS.

The contact owns a 2018 Buick Enclave. The contact stated that while making a left turn, another vehicle jumped onto a curb and struck the rear end and rear tire of the vehicle. The front driver side, passenger side, and curtain air bags deployed. The contact was concerned about whether the air bags should have deployed for the type of impact experienced. No warning light illuminated. The local dealer was contacted. The vehicle was not diagnosed or repaired. A police report was filed. The contact sought medical attention for bloody stool, lower back pain, and neck pain. The manufacturer was not made aware of the failure. The failure mileage was approximately 83,000.

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.

Was driving at 35 MPH with no other cars or obstructions in front of me and the vehicle suddenly slammed on the brakes on its own and the throttle became inactive (would not respond to inputs). I don't know if the vehicle slammed on the parking brake or the service brakes. After 30 or so seconds everything returned to normal. No lights are illuminated on the dash, but a light did come on when the vehicle braked on its own. The light turned off before I could see what it was.

8am, Stopped at intersection. Light traffic. Green light, increased speed to 15 mph, turning left and sunroof explodes. Luckily inside shade cover was closed so no glass was able to come down.

The contact owns a 2018 Buick Enclave. The contact stated while driving approximately 35 MPH, and at various speeds, while the brake pedal was depressed, there was an abnormally loud high-pitched grinding or squeaking sound coming from the brakes. The contact stated that the noise was loud enough that pedestrians would turn and look at his vehicle when he depressed the brake pedal. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where the sound was being emitted and could not repair the failure. The manufacturer had been informed of the failure. The failure mileage was approximately 60,000.

Passenger side rear electronic parking brake wire clip failed, wire is rubbing against the rear cv boot. This caused a short that led to defective ABS control module that had to be replaced for anti-skid and anti-roll for this SUV. It also affected the transmission alert system. Related Bulletins: https://s3.amazonaws.com/shop-ware-prod-attachments/2ce2615fbf6158c020eb7ddbba19c956d5c9cf33.pdf?1678982217 https://s3.amazonaws.com/shop-ware-prod-attachments/df15af6513bb2265bc07179efd733f06e355fe8a.pdf?1678916531 From Shop: "Continued working with the electronic parking brake system Used GM Techline connect to attempt to reprogram the EBCM because of the programming error DTC. After programming we also performed the module configuration procedure and although e removed the programming error, the system is still reporting a failure with the LEFT parking brake circuit. All circuits have been checked. The current hypothesis is that the electronic brake control module (EBCM) has failed internally. This likely occurred when the actuator wiring became exposed and allowed the wiring to short together. : https://s3.amazonaws.com/shop-ware-prod-attachments/d0edde862ec36d33b013087e9934f74892154a13.pdf?1678995379

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 check engine light turned off. The vehicle was taken three times to the dealer where the failure could not be duplicated. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was informed that the warranty was not honored, and no assistance was provided. The failure mileage was 125,639.