Buick Regal hesitation problems

Filed Jun 9, 2025 · Electrical, Suspension · PR

I am submitting a formal complaint regarding a 2019 Buick Regal, which I purchased as a used vehicle in 2023 with approximately 19,000 miles. Since owning the car, I have added only 14,000 miles, yet I have experienced multiple significant and ongoing issues that raise serious concerns about the safety, reliability, and warranty service associated with this vehicle. Vehicle Problems: Suspension Issues: Shortly after purchase, the car has had persistent suspension problems, which negatively affect stability and ride quality. The dealership has replaced multiple suspension components, but the issue continues and remains unresolved. General Motors (GM) initially agreed to cover these repairs even if my warranty expired and also stated I would qualify for a vehicle buyback. They have now backtracked and are refusing to honor that commitment, despite the ongoing unresolved safety issue Electrical and Transmission Malfunctions: I have reported intermittent electrical and transmission issues to the dealer. These include erratic shifting, hesitation, and occasional system malfunctions. Each time, I have been told they cannot replicate the problems, so no repairs have been made. These issues are intermittent, but they occur while driving and are potentially dangerous. Delays in Repairs and Warranty Coverage: The dealership delayed parts ordering and repairs for my suspension concerns until after my warranty expired. This delay appears to have been intentional, potentially to avoid honoring warranty coverage. Refusal to Service Due to Location (Puerto Rico): I live in Puerto Rico, and both GM and the dealership have stated that they are limited in what they can do for me because of my location. For example, I was told they cannot order a replacement windshield to Puerto Rico, and that what they can do based on a buyback or warranty coverage is limited. I have been patient and waited for the dealership and GM to make things right for 2 years.

Filed Jul 1, 2022 · Acceleration · FL

MIL Lamp is illuminated and cannot be turned off or reset. The code displayed on the scanner is for P2138 "Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation." There is also a "Reduced Engine Power" message on the dashboard. Available for inspection upon request. My safety was put at risk before the vehicle was serviced because the car shut down in the middle of the street with cars behind me. I called a certified mechanic to successfully service the vehicle and he cleared the code. My safety was put at risk again after the car was serviced because the code came back on as I was driving on the highway. Car lost power and speed and as I tried to get the car pulled over with emergency lights on, I was almost hit from behind by 2 other drivers. Problem can be reproduced within 10 minutes. Per the mechanic's request, I am taking my car to a Buick Century GMC dealership on 7/16 @ 12 PM to be serviced. Warning symptoms before code came on happened especially during times of rainfall. Car hesitated to pick up speed. Overconsumption of gas resulting in decreased mileage.

Filed Mar 9, 2021 · Engine, Fuel system · 12,000 miles · ID

I started experiencing excessive oil burn at around. Since then, I have checked my oil biweekly to top off and keep at proper levels along with consistent oil changes as the oil gets dirty quickly. Dealerships before have told me that its "normal" for these engines. I discovered a bad oil leak. Vacuum pump issues. Multiple camshaft seals worn away, that were hard as rock from excessive heat including piston seals that had been affected. Thought this possibly had fixed the excessive oil burn. A few weeks later I received the oil level low notification on the car computer. I check and its very low. The oil burn is continuing with no clear signs of an oil leak with dirty oil. There is possibly more problems within the engine that aren't seen. I have checked previous complaints. I notice that this engine has many of the same problems with the turbo package on gm vehicles. It has a rough idle and engine hesitation. These characteristics seem to include inconsistent engine performance sound and are felt through the pedals, the driver's seat and steering wheel, there is a putter and hesitates while accelerating.

Filed Aug 28, 2019 · Electrical, Engine · 123,964 miles · IN

Whenever I am driving my vehicle for an hour it starts to stall or sputter in traffic and the engine dies completely. It will restart but still continues to hesitate when accelerating. I've taken it to a mechanic and no error codes pop up when this happens so they do not know the cause or how to fix the issue.

Filed Oct 29, 2018 · Engine, Steering · 69,000 miles · NV

Check engine light on. Code p0011 present. Indicating over-advanced camshaft position sensor. While performing a u-turn, the vehicle died/lost engine power and steering locked in place in the middle of the road. The vehicle was spread across three lanes, as I was in the middle of my u-turn, with oncoming traffic approaching. Luckily, I was able to start the car back up and regain control just as traffic neared my position. Almost deadly situation. Also noticing engine hesitation as well as shaking of the vehicle while idling.

Filed Oct 13, 2018 · Driver assistance, Engine · 2 miles · AZ

On 10/10/2018 at 6:45 am, 63 degrees fahrenheit, certified/current lpt warranty/15' regal prem 2/ 60,600 od 2.0l/turbo/automatic trans, conditions-speed-10 MPH-steering straight, brake at 100%, engine performance issues manifested during the end portion of the trip while in drive, at idle, dropping off friend at his workplace parking lot. Trip characteristics-total trip 35 min at 20 total miles-first part of the trip at 45 MPH for 15 min/the middle part of the trip at 70 MPH for 12 min/end portion of the trip at 15-25 MPH for 6 min/idle at 2 min-engine performance-sudden onset of high, rough idle or engine hesitation? Characteristics seemed to include inconsistent engine performance sound and feel felt through the pedals, the driver's seat and steering wheel, brake pedal depressed at 100%, immediately after moving the automatic transmission knob from park to drive, engine temp within normal parameters, gas level 35 miles till e. In drive, accelerator at 15-20%, drove 35 MPH for 5 miles to a shell gas pump, shifted to park, brake depressed at 100%, depressed on/off engine button, engaged the electronic parking system, max fueled vehicle with high-grade unleaded fuel. Vehicle sat, unstarted, for 15 min after fueling. Drove to the autozone across the street, 1 mile/20 mp, experienced a mil coming on solid in the ip while parking the vehicle. Obtained mil printout read: "cylinder 4 misfire detected"/"ase certified master technicians have seen this issue on your type of vehicle and the most likely solution is: perform engine de-carbon procedure"/code p0304. At present: on start-solid mil, rough, high idle at 1500 rpms, after 1-2 min-mil,tcs solid, rough idle at 1000 rpms. Drivability at all speeds affected but less so at higher speeds, *significant lurch at 15-35 MPH feels like hard shift/intermittent. I changed oil/air filters, driven 2 miles since parking at residence.

Filed Jan 23, 2017 · Engine · 85,000 miles · PA

Tl* the contact owns a 2011 buick regal. While driving 55 MPH, the vehicle hesitated and stalled without warning. The dealer diagnosed that the timing chain needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 85,000. The VIN was not available.

Filed Dec 13, 2016 · Engine · 50,000 miles · MI

Tl* the contact owns a 2015 buick regal. While stopped at a traffic light, the vehicle began to putter and hesitate while accelerating. The failure occurred randomly. The dealer diagnosed that the engine fractured and needed to be replaced. The vehicle was repaired; however, the contact heard a grinding noise. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was approximately 50,000.

Filed Aug 25, 2016 · Driver assistance, Electrical · 12,000 miles · VA

Tl* the contact owns a 2011 buick regal. The contact stated that the stability control warning indicator randomly flashed. In addition, upon making a right turn, the vehicle hesitated, shook, and vibrated as if it would stall. The vehicle was taken to two different dealers several times, but the failure was unable to be replicated. The manufacturer was notified of the failure. The approximate failure mileage was 12,000. The consumer stated the vehicle was repaired, but it still experienced a slight vibrations.

Filed Mar 26, 2015 · Electrical, Engine · 53,000 miles · NY

I bought this 2011 buick regal with about 53000 miles on it from a private seller. From the day I got it the stereo, clock, navigation have been a problem. The clock doesn't hold the time, stereo turns off my itself or sometimes makes a loud pop noise and doesn't work. The navigation is in the state of washington, I live in n.y. The drivers heated seat doesn't work. The bumper to bumper warranty was up 3000 mile ago, at this point. Later, the timing chain needed to be replaced. The motor made a loud knock and would surge, hesitate and stall. With the timing being off, the transmission wouldn't downshift and was hard to stop the car. Two months later the same symptoms re-occurred. The dealer charged me to diagnose and told me it was down 2 quarts of oil. They changed the oil 2 months prior. Now, I noticed the rear brakes are dragging and don't release sometimes. Gm, buick and two dealer won't do anything about any of this. An expensive car that is barely years old with all these problems. I've seen the service bulletins on all off these problems. No help from gm, just index card readers from the philippines who apologize every thirty seconds and make excuses!