78 of the 3,307 complaints filed about the Buick Enclave are about the fuel system — 2% of everything owners reported. The worst model year for it is 2010.
78
Complaints
2%
Share of all complaints
2
Crashes
0
Fires
FUEL/PROPULSION SYSTEM
Fuel pump module
NHTSA complaint #11756730 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
The engine, power steering, stabilitrak, and reduced engine power (vehicle would essentially die while driving at random times). My safety AND others were put at risk when I am traveling down the road/interstate and the engine just cuts out and am no longer able to accelerate to any speeds, causing me to have to pull over to the shoulder WITHOUT ANY ENGINE POWER. Yes, the problem has reproduced and confirmed with the dealer I purchased from. Vehicle has not been inspected by the above mentioned. Only had it inspected by the dealer I purchased the vehicle from. There were no prior lamps, messages, or other symptoms until it just showed up while driving one day. It happens at the same time as the engine loses power and acceleration. The check engine light comes on, within 2-3 seconds the engine "dies" and then the "Service stabilitrak" pops up, as well as the warning "Reduced Engine Power". This first appeared on approximately on 05 JUN 2026. Vehicle was purchased on 12 MAY 2026.
NHTSA complaint #11749611 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
Driving home from work on interstate, 2 month old 2026 Buick enclave jolted and shut off completely while going 65mph. Barely pulled over safely to the left side (Oklahoma drivers). Restarted car, check engine light illuminated with messages of reduced engine power (limp mode up to 35mph) while stuck on highway, traction control and esc disabled. Was able to get off highway and limp to nearest GM dealer. They performed diagnostics 3 days later and replaced the fuel rail pressure sensor. It did not fix it. More codes according to dealer and they are involving engineers. Moving next week on military orders and car is still being worked on with no estimate of time to complete. Insanely concerning safety hazard for a brand new car to shut off on the highway. Could have died or killed others in accident. Unable to invoke lemon law yet but not comfortable driving the car again especially across the country on limited time.
NHTSA complaint #11747495 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
I am submitting this letter to formally report two ongoing issues with my 2018 Buick Enclave. First, I have experienced persistent problems with the emissions purge valve. My vehicle has repeatedly triggered diagnostic trouble code P0496, indicating a malfunction in the purge valve system. I am aware that this issue has been the subject of recall campaigns for other Buick Enclave models; however, my vehicle has not been included in any such recall, despite exhibiting the same symptoms. This malfunction has resulted in persistent check engine warnings and noticeable performance concerns, raising questions about emissions compliance and the overall reliability of my vehicle. Given that other vehicles of the same make and model year have been recalled for the same issue, I respectfully request that my vehicle be reviewed for inclusion in the recall. Second, I am formally reporting a malfunction involving the stabilizers. Recently, I have noticed unusual noises and instability when driving, particularly when turning or traveling over uneven surfaces, which indicates a potential stabilizer malfunction. These issues have persisted despite regular maintenance and inspections, affecting the handling and safety of the vehicle. I believe this may represent a manufacturing or design defect that could pose a risk to other owners of the same make and model. I respectfully request that the National Highway Traffic Safety Administration investigate this matter further. I kindly ask the National Highway Traffic Safety Administration to consider expanding the existing recall to encompass additional vehicles affected by this defect. Please advise if you require further information or documentation regarding my case. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11742783 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
The vehicle developed an exhaust leak caused by both weld points on the front exhaust pipe breaking. A dealership inspected the vehicle and confirmed that the exhaust welds had failed, creating a hole in the exhaust pipe and triggering a P0420 catalyst efficiency code. The failure occurred at approximately 31,500 miles. The exhaust leak caused increased exhaust noise and emissions warning codes. The dealership recommended replacement of the front exhaust pipe assembly. This appears similar to known failures on the Buick Enclave and Chevrolet Traverse platform where the front exhaust pipe mounting bracket separates from the pipe due to weld failure. GM has issued special coverage adjustments for similar exhaust pipe bracket weld failures on other model years of these vehicles. The failure occurred at relatively low mileage and appears to be a structural weld defect in the exhaust system.
NHTSA complaint #11724643 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
Dear NHTSA Safety Team, I am submitting a formal safety complaint regarding my 2020 Buick Enclave (VIN: [XXX] ). My vehicle has experienced repeated engine shutdowns while driving, creating a serious safety hazard. Vehicle & Incident Details: * Make/Model/Year: 2020 Buick Enclave * VIN: [XXX] * Mileage: ~116,834 miles (purchased at ~62,000 miles, used) * Purchase Date: [Insert Month/Year] * Dealer: Kyle Durrence Claxton Dealership Repair History: * First repair attempt: TPMS system * Second repair attempt: Connector assembly block * Total out-of-pocket spent: $4,000+ * Despite these repairs, the vehicle continues to shut off unexpectedly while driving. Safety Impact: * Engine shuts off while the vehicle is in motion, creating a risk of collision. * Vehicle is my only mode of transportation. * Dealership has not provided a loaner vehicle. Additional Concerns: * I have discovered forged signatures on my original finance/loan paperwork from the dealership, which I previously reported to the dealership General Manager without response. Requested Action: I request that NHTSA record this safety issue, investigate the repeated engine shutdowns, and consider whether this defect warrants a recall or further manufacturer action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11719053 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
The vehicle began shuddering and losing power during normal driving. The issue occurs at various speeds, especially between 35–60 mph, and feels as though the car is slipping or will stall. A certified service center diagnosed a failing torque converter, which is part of the transmission/power train. The repair estimate was several thousand dollars. This failure poses a safety risk because the vehicle can suddenly lose acceleration or struggle to move in traffic. The service center confirmed the defect but stated there is no recall or assistance from Buick or GM. I have contacted Buick Customer Care and GM Executive offices with no response. The vehicle remains unsafe to drive.
NHTSA complaint #11696098 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
The engine and fuel pump system failed while driving the vehicle. It is available upon request to inspect. I just towed it to the shop today on 10/22/25 to get a full inspection. My sister and I were put at risk while driving towards a hill in San Francisco. It was on a busy main road when suddenly the vehicle began to jerk and thud back and forth. While I pushed the gas pedal, I began to question why the vehicle was suddenly reacting this way. In efforts to pull over to the side, a huge smoke fog began to come out of the exhaust pipe. As I tried to reach the curb the car didn’t want to move any further as I pushed on the gas. I put it in park and called the tow truck (receipts below) while there were cars passing me by almost causing an accident. I have looked online to see if there was a problem or recall with this vehicle having the same issue I was having. Come to find out there was a recall issued for certain vehicles only, with the same issue as my vehicle. The vehicle was taken into a local auto shop, where they diagnosed it and inspected it. The reports show it has the same exact issues with the car as those that were recalled. No there were not any warning signs nor failure signals. Due to this reason, I was completely caught off guard.
NHTSA complaint #11695070 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
I purchased my vehicle in 2020. In 2022 I experienced an issue where my car stopped in the middle of the road without warning. Despite several attempts to try and move the vehicle off of the road the police were notified and my vehicle was towed. The vehicle gave an error code that conditions not met for driving. One office tried to put the vehicle in neutral but the wheels locked and the shifter was locked as well. The battery has been replaced 3 different times since I have owned the vehicle. A mechanic friend of mine (who is a trainer for GMC) hooked his computer up to it and found no issues. He did find a loose wire which he the reconnected. I was able to drive my car for 6 months before the same thing happened, same situation the vehicle just stopped in the middle of the road only this time I couldn't turn the vehicle off, we had to manually disconnect the battery and again the police came out due to traffic hold up. My car was towed twice afterwards as I could get the car running for a few minutes before another error. To date my car has been sitting in my driveway since March of this year, this time it won't hold a charge and will not even start. Im not sure if this is an engine or an electrical issue. I did call 2 Buick dealerships that told me that it would take about 5 hours to diagnose the issue where I would be charged per hour at the mechanic hourly rate. At this point I think my vehicle needs to be recalled, even if I could get it repaired I dont feel safe driving it. Thankfully it stopped on a minor freeway and no major incidents occurred.
NHTSA complaint #11683367 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
The contact owns a 2020 Buick Enclave. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the evaporative emission system, vapor canister purge solenoid, and the control solenoid were replaced; however, the failure persisted. The contact stated that the vehicle was difficult to start, and the instrument cluster gauges were fluctuating. The contact stated that the failure had occurred after refueling the vehicle. The contact stated that the failure had progressively worsened. The vehicle was taken back to the independent mechanic, where it was determined that the failure was related to NHTSA Campaign Number: 20V639000 (Fuel System, Gasoline), and the contact was referred to the dealer for assistance. The vehicle was taken to the dealer to be diagnosed. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 42,000.
NHTSA complaint #11673314 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
as someone who has been in the car business his entire life, the below TSB is utter bullshit. My 2025 enclave with 3400 miles on it had a catastrophic and copious amount of transmission fluid. on my tile floor in my garage and all over my driveway a minimum of 5 to 7 quarts.. had my wife been driving the car with my grandchildren as a guarantee it would’ve locked the transmission up and evacuated all the oil as it is on the high-pressure side of the pump. Based on my knowledge of recalls, this should be a stop sale and a recall, not a TSB why have they been given a pass on this? https://static.nhtsa.gov/odi/tsbs/2025/MC-11014291-0001.pdf
NHTSA complaint #11668374 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
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.
NHTSA complaint #11661835 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
Fuel pump, throttle body, and High pressure fuel pump. Car makes door lock noises and’s completely cuts off while driving over 20 times now on highway and all. Have gotten several things repaired in addition to these listed things and after repairing car works fine for a few months then needing to be replaced again. No codes are being given other then abs, traction control warning and stabilitrak
NHTSA complaint #11657657 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
The dealership is unable to identify the failing component or system. The vehicle shuts off while driving above speeds of 60mph, which causes the power steering pump and power brake pump to fail. This symptom of shutting off while driving creates a significant life safety risk for the driver, passengers, and other motorists. The vehicle has been inspected by the dealership over 4 times in 3 months. Since the vehicle shuts off, there are no warning lamps, messages or other symptoms prior to the failure.
NHTSA complaint #11651741 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
Welds have broken loose from exhaust creating a hole and loud noise & strong exhaust smell
NHTSA complaint #11640093 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
mY VEHICLE STOPPED IN THE MIDDLE OF THE HIGHWAY AND WAS UNABLE TO PUT IN DRIVE
NHTSA complaint #11639358 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
My car has shut off multiple times , electrical shorts, intermittent no start, intermittent misfires all the time but randomly , injector codes even when replaced and injectors are good , yes come check out my vehicle no shops can find out what's the problem practically the whole front end has been replaced and problems still happening it is congruent with a recall but shows nothing from vin
NHTSA complaint #11633316 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
Catalytic converter was defective in October 2022. Had to wait to get part in. Vehicle taken to dealer for repair in December 2022/ Told that the second catalytic converter needed to be repaired. I stated that I was not aware that cars had two catalytic converters. Parts were ordered and replaced. Engine light came back on-again October 15, 2024. Portable CO detector in car was beeping when engine around time engine light came on. Not covered by warranty or insurance. A new car with 55, 000 miles to date should not have these issues.
NHTSA complaint #11621844 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
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 recall on this transmit that is used on multiple GM vehicles
NHTSA complaint #11610097 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
I took my Buick enclave into the gmc dealership two years ago for an service airbag light that kept coming on. They sent me home twice saying it was just a computer issue. Now this recall is out and I asked for my car to be serviced as I’m a mother of 4 and can’t stop driving my vehicle. They said that the part isnt out yet and nothing they can do. I’m having to drive a dangerous vehicle around with no help from gmc.
NHTSA complaint #11598415 — an unverified report by a vehicle owner.