BUICK Complaints

The contact owns a 2024 Buick Encore. The contact stated that while attempting to start the vehicle, the instrument panel displayed a blank screen. In addition, the contact stated that the failure occurred every 31 seconds. The vehicle was taken to the dealer where it was diagnosed with a failed VCU module. The contact was informed that the VCU module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. In addition, the contact was informed that the repair was not covered under an unknown recall or warranty program. The failure mileage was approximately 55,300.

I am submitting a complaint regarding premature exhaust system failure on my 2020 Buick Enclave involving the front exhaust pipe/exhaust manifold/catalytic converter assembly. The issue appears very similar to the conditions described in GM Special Coverage programs N212356540 and N242445280 involving exhaust pipe and bracket failures on related GM crossover platforms. The mounting brackets/support brackets on the front exhaust pipe appear to fail or separate, which places excessive stress on the flex section of the exhaust system. This movement and stress can cause the flex pipe/manifold area to crack and may ultimately damage the catalytic converter assembly itself. My vehicle developed: Exhaust leak Loud ticking/exhaust noise Rich/lean oxygen sensor fault conditions Exhaust fumes entering or potentially entering the cabin Passenger dizziness while riding in the vehicle Concern for carbon monoxide exposure The repair facility documented that the exhaust leak should be repaired as soon as possible because exhaust fumes may enter the vehicle cabin. The estimated repair cost is approximately $1,700 for replacement of the integrated catalytic converter/exhaust manifold assembly. This appears to be more than ordinary wear and tear. The failure pattern is consistent with bracket/support failure causing abnormal stress and cracking in the exhaust system upstream near emissions components. Because these failures can allow exhaust gases and possible carbon monoxide exposure into the passenger compartment, I believe this issue represents a significant safety concern and warrants investigation for 2020 Buick Enclave vehicles and related GM crossover platforms.

The Automatic Emergency Braking (AEB) system activates unexpectedly and dangerously. Incident 1 5/7/2026: While driving approximately 2 mph in a drive-thru and rounding a curve, the vehicle suddenly applied full braking without warning. The braking force was severe enough that I struck my face on the steering wheel and my child was thrown forward in a secured car seat. Incident 2 5/19/2026: While merging onto a busy road behind a semi truck, the vehicle again applied sudden hard braking after I safely merged. This caused the vehicle behind me to nearly rear-end me, creating a high-risk traffic situation. These events occurred with no obstacle or reason that would justify emergency braking. In addition, the vehicle developed a coolant leak around 20,000 miles, raising concerns about overall reliability and potential related system issues. The unexpected braking presents a serious safety hazard and increases the risk of rear-end collisions and injury. The vehicle is being brought to a dealer for inspection, but the issue is intermittent and may not be easily reproduced.

My instrument panel cluster went black while the vehicle remained operational. The speedometer, warning lights, warning chimes, PRNDL/gear display, and dashboard are all non-functional. We checked fuses and performed a battery reset. The issue remains unresolved. This creates a significant safety concern, as I have no access to vehicle speed, warning lights, a gear indicator, or safety alerts while driving. I am requesting that this issue be formally documented and investigated as a potential safety defect involving the instrument cluster/electrical system.

Will vehicle was parked in my driveway there was a loud like explosion. It just exploded. My passenger size of my vehicle is totalled. I do have a video of the car blowing up. I am so happy that it was late in the early mornings. I have grandkids that play here and one of them could have got hurt or killed.

While driving, the vehicle suddenly and without warning experienced a severe, dangerous loss of acceleration. The dashboard immediately displayed a "Reduced Engine Power" warning message along with a "Service StabiliTrak" light, forcing the vehicle into an immediate electronic fail-safe "limp mode." This sudden, drastic reduction in engine power severely restricts the vehicle's ability to maintain safe roadway speeds, accelerate from a stop, or merge safely into traffic, posing an immediate rear-end collision hazard to myself and other motorists. Furthermore, the defect simultaneously disables critical active safety systems by shutting down the StabiliTrak and Traction Control networks. A diagnostic scan revealed code P2138 (Accelerator Pedal Position Sensors 1-2 Correlation Not Plausible). Investigation reveals that this is a widespread, systemic safety defect caused by design flaws in the vehicle's body. Rainwater and moisture from clogged factory sunroof drains or cowl seams leak directly down into the interior cabin wall, pooling into the primary instrument panel-to-body wiring harness block (X218 connector) in the driver's side footwell. This water intrusion causes green corrosion on the delicate pins, short-circuiting the 5-volt reference sensor circuit for the throttle controls while the vehicle is in motion. General Motors is fully aware of this exact defect and has documented it internally via Technical Service Bulletin (TSB) #10-00-89-017H (and related GM TSBs). Because this defect causes unexpected, immediate engine failure and disables traction safety networks while driving, it constitutes a severe safety hazard that should be escalated to a mandatory safety recall.

We keep getting notifications that our 16 yr/old daughters car has an airbag safety recall with communication on it about how "quick" and "easy" it is to have the airbag recall repaired but it is ALL LIES! We have been waiting almost 1 year and the dealerships still can't get a replacement airbag from the manufacturer 's to do said replacement. This is insane and unethical. They are playing with people's lives knowing full well that the average consumer can't fix this or just go buy a new car. I want justice!

The instrument panel gets really hot. I've taken the car to a dealer to diagnose the problem but they say that that can't find anything wrong .There were no warning lights or any message. I purchased the car in 2025 and it already had a little over 10,000 miles on it. Not just the instrument panel gets hot, but, also yhe panel where the radio is.

The brakes make a squealing noise when backing up and this has been reported on many 2025 enclaves. There is also a repeated clicking noise after turning the vehicle off.

When I come to a stop and the auto stop/start disengages the car makes a grinding noise