2010 Buick Lacrosse acceleration problems

Filed Dec 16, 2025 · Acceleration, Electrical · VA

I purchased a vehicle August 2, 2024 from Kingdom auto sales. The car was inspected July 2024 in which it passed shortly after the car wouldn’t go over 40 mph. It would say it’s an over speed. The car runs hot and the parking assist light won’t go off May 25, 2025 I was driving on the highway in the car lost power and the speed was reduced after getting off the highway lost control of the steering wheel due to the stability and hit a guard rail. no reports was made. I contacted the dealership in which I haven’t been contacted and problem not resolved.

Filed Feb 5, 2024 · Acceleration, Electrical · FL

The car continues to have serious engine issues. I keep getting a service Stability track and Engine Power Reduced warning. It has happened to me on the expressway and the car will not accelerate past 20 miles per hour. I had the car repaired on October of last year (3 months ago) and the issue persists. I decided to research online and this seems to be a major issue going on with Buicks. It sounds like GM has done nothing to remedy the malfunction. Many people state that even the dealers can seem to fix the issues and have no clue as to why this happens. This is a serious and life threatening mechanical failure that needs to be addressed.

Filed Jul 24, 2023 · Acceleration, Electrical · FL

I get Reduced Engine Power and Service Stabilitrak messages. Engine Code P2138 is prevalent. The car will not accelerate, nor maintain highway speeds, forcing the driver to pull off the road and shut off the car. The warning message returns under normal driving conditions. This code points to several components [Accelerator Pedal Position (APP) Sensor, Throttle Body Assembly with Sensor, Manifold Absolute Position (MAP) Sensor, etc...] All of which I have replaced. It is rumored that General Motors knows that it is a problem and the true fix is to replace the wire(s) and seal or replace the connector. Refer to GM Technical Service Document 070604019F

Filed Jan 23, 2020 · Acceleration, Driver assistance · 112,000 miles · TX

On 1/22/2020 when I was driving down the road my stabilitrac light came on causing my car to slow down to 25 MPH. Wouldn't go faster than that..I took the battery cables off for about 20 min. And the stabilitrac light came off so I drove the care home and right before I got home it came on again. Also in 1/20/2020 my left headlight. Does not work. I put a knew light bulb on and it worked for a few days and it went out again.

Filed Sep 1, 2017 · Acceleration, Engine · 50,000 miles · WI

Tl* the contact owns a 2010 buick lacrosse. While driving 75 MPH, the vehicle lost power and decelerated independently to 30 MPH. The failure recurred several more times. The vehicle was taken to zimbrick buick gmc eastside (5402 high crossing blvd, madison, wi 53718), but the failure could not be replicated. The vehicle was not repaired. The manufacturer was made aware of the failure and stated that they would not assist since the vehicle was out of warranty. The contact also stated that the vehicle failed to start. The contact was finally able to restart the vehicle and purchased a new battery; however, the failure recurred three or four times very close together. The contact also stated that, when attempting to start the vehicle, it would fail to detect the key fob even when placed properly. The vehicle was taken back to zimbrick buick gmc eastside, but the cause of the failure could not be diagnosed. The vehicle was not repaired. The contact was unsure of whether the manufacturer had been contacted. The approximate failure mileage was 50,000.

Filed Sep 1, 2017 · Acceleration, Brakes · 344,000 miles · NE

I noted the exact same problem reported on the federal safety agency site for this same make and model of car. It's included under the heading vehicle speed control. I just purchased this car in the past month and now notice that each time I try to move my foot from the foot feed to the brake pedal my foot catches on the side of the brake pedal. It seems to me to be an obvious safety risk in that it takes another movement of my foot to get it on the brake pedal slowing my response to brake. I fear that if I need to stop quickly, I will either miss the brake pedal or will have a delay in reaching it which could cause a serious accident if braking quickly is necessary to avoid a crash. This happens every time I move my foot from the foot feed to the brake pedal!

Filed Mar 27, 2017 · Acceleration · 82,000 miles · KY

"takata recall" I have a recall letter on the throttle sensor and if I have any issues please take into a dealer right away I did this in november of 2016 and they said code did not show up, so 3 months later I have same issues with the car not going over 40 m.p.h and my engine power is reduced. I have 3 diagnostic test that show the throttle sensor is bad I also have documentations of this. I have paid a dealer $100 dollars twice for them to tell me the code still did not show up so they won't replace the recall. I have replaced the throttle myself and paid out of my pocket because the car is un-drivable since feb 13th 2017 I have been dealing with gm customer care on this issue and they refuse to help me with anything. If this is a recall why am I putting out money for a part that is bad and needs to be replaced. This has been going on for almost 4 months, first time I was going 55 MPH and was able to pull over right away. The second I was getting off the hwy and was only a mile from work and was able to pull into work. The third time this happened I was almost killed coming home from work on the hwy when I had to drive in the emergency lane doing 40 when the speed limit is 65 with a semi behind me I was a nervous wreck by the time I was able to get off the hwy and turn the car off. I also have the part to show that it is bad.

Filed Jul 6, 2016 · Acceleration, Transmission · 67,500 miles · MI

On friday, july 1, 2016 I was traveling down a 2 lane road with my cruise control set when my car suffered a loss of power. The engine still was running, but apparently my transmission lost the ability to power the car. I was able to park on the shoulder of the road, and eventually, towed to my mechanics shop. Yesterday I was told the problem was a faulty transmission control and it will cost me $1060 to repair. I was also told that this is a common enough problem that buick dealers keep the part in stock.. If it is that common of a problem, and cars are losing power on the road, that is a safety issue and should be subject to recall, instead of taking hard earned money out of owners pockets to fix! I might add that this car has less than 68,000 miles on it!

Filed May 4, 2016 · Acceleration, Electrical · 89,000 miles · FL

Over the past several months, while driving, the service stabilitrak warning light comes on; the ABS & park assist lights flash on and off; my RPM, speedometer, & temperature gauges go haywire; and the engine loses power causing the car to jerk. I never know when this will happen. On 3/18/16, I was put in a dangerous situation when this happened while driving across the state of florida on a 2 lane highway that had no safe place to pull off the road. The check engine light also came on and stayed on thru the rest of my drive. Two days later, the drive home was incident free & the check engine light was gone. On 3/22/16 I took the car to a gm dealer; showed the service tech a video of the events happening as I was driving and a letter I got from gm regarding a possible throttle sensor problem that causes reduced power and malfunction indicator lamps to appear. The gm dealer tech said my cars problems had nothing to do with gm's letter and he was 90% sure my fuel injector needed replacing. I took the car to my personal auto mechanic for 10+ yrs, who works for a very reputable company, for a second opinion. Since the codes had been cleared by the dealership service dept and the car checked out ok my mechanic said to drive it and bring it back if the problems occurred again. It recently started happening again & my check engine light came on so I took the car to my mechanic who found multiple codes for ECM & TCM lost communication PCM malfunction & other communication issues. He drove the car and experienced what I was explaining was happening. My mechanic couldn't pinpoint the problem but said there was no problem with the fuel injection system; that it's electrical. He suggested we take the car to another buick dealer to have it checked out. This is a very dangerous situation & I don't feel safe driving the car since I never know when the problems will start happening.

Filed Mar 21, 2016 · Acceleration, Driver assistance · 89,000 miles · FL

Three days ago, while on a trip from the west coast of florida to the east coast of florida; and while driving on the highway at 65 MPH, the warning bells started dinging and the messages: service stabilitrak, ABS, and park assist off kept flashing off and on; the car began jerking and losing engine power; the tachometer, speedometer, and temperature gauges were jumping around all over the place; and the check engine light came on. (a video of what occurred was taken to show as proof). I managed to pull off the side of the road, turned the car off and sat for several minutes, then started the car again. Less than a minute after I got back on the highway, the same events occurred again. After at least 30 minutes or more of the car continuing to malfunction while driving; it suddenly stopped giving me warning signals and engine power seemed to stabilize; however, the check engine light remained on. Once I reached my destination, I didn't use the car for two days. My return trip home, which was approximately 140 miles, was uneventful; however, the very next morning on my way to work, while sitting in traffic on the expressway, the warning bells suddenly started ringing again, and the service stabilitrak and ABS lights came on. Fortunately I was able to make it to work and called the buick dealer to bring my car in to have it checked. In the past few months, this problem has occurred 3 to 4 times, but each time only lasted moments and never to the extreme that it did . I received a letter from buick about 3 months ago that pertained to such issues and loss of engine power; and the letter stated that the car should be taken to the buick dealer and repaired at no cost. This is an extremely dangerous problem that needs to be addressed and resolved immediately.