A small nylon bushing in the cruise control servo bail may slip out of place, causing intermittent and unexpected increases in engine speed or dieseling (engine run on with ignition off).
Acceleration & cruise control
Buick Lesabre Acceleration problems by year
134 complaints filed with NHTSA about the Buick Lesabre's acceleration & cruise control. Unintended acceleration, surging, throttle problems and cruise or adaptive cruise faults.
Acceleration complaints by model year
Acceleration recalls
Accelerator pump lever retaining pin may loosen after repeated heavy accelerator pedal applications. This could cause the throttle to become stuck in the open position.
Latest Lesabre acceleration complaints
the 2000 Buick Lesabre is a wonderful car basically a tank with the 3800 SERIES II you cant go wrong but the tiny little plastic part holding the throttle cable will dryrot even with a garage kept car under 150k miles please get them replaced I was driving and then the part came off and it got wrapped around the bracket and it took off I melted the breaks I wasn't stopping due to constant gas so I flipped in down into neutral to stop the vehicle from accelerating after i found a spot to pull it off the road but you...
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can also put your foot under the peddle and pull up on it while pressing the breaks if you cant find a safe area while this is happening but i didnt relise it was happning until i hit 65 because the road i was on was a 55 and before i knew it i was going 90 luciky i live out in the rural areas
The plastic pice holding the throttle lines snapped off and my cable went under my bracket and it took off I destroyed the Transmission putting it in neutral to stop the vehicle after I had gotten it stoped the fire from the engine was small I will recommend this car and yes I do want another one but it is a common issue I will recomed this car because the body is made out of steel and they are basicly tanks with the 3800 Series II and it was easy for me to spot what was happening and get ahead of it before it got worse I drove 5 miles with this happening before the engine overheated and caught fire
In a small town, approaching a stop sign at the highway crossroad with 2-3 vehicles in front of me. I removed my foot from the accelerator and started braking. The engine immediately revved, I moved my foot to try to raise the accelerator and it was all the way to the floor; it would not raise. I immediately placed in neutral and as pulling as close to curb as possible, I shut the ignition off, then placed in park. It had to be towed back home until we can deal with it. Luckily, I was able to act quickly enough to prevent any damage to any other vehicle or person.
The vehicle randomly accelerates as high as 50-60mph without touching the gas pedal. The car has to be thrown in neutral or stopped some place safe, at which point it revs up past 3000 rpm until the gas pedal is pressed to throttle it back down. The vehicle has done this in reverse while backing out of a driveway as well, which is extremely dangerous. It does not seem to do this upon starting or while it is warming up. It can be on any street or highway and at any speed when it starts revving high. The problem is...
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intermittent, but clusters sometimes several days in a row as constant and then going a month without doing it at all. It does seem to be more likely to accelerate after hitting a dip (like near where a drain is in a parking lot) but that may be just coincidental. The car has been taken to two different mechanics on three separate occasions with a tune up done and the throttle body cleaned along with some other trouble-shooting with the throttle at a cost (thus far) of several hundred dollars. The vehicle is doing this so frequently in the last few days that is has become unsafe to drive.
The vehicle's throttle apparently becomes stuck open, which causes the vehicle to accelerate to a high rate of speed and become difficult to stop. It has occurred while the car is in park or when accelerating from a stop on city streets or when accelerating on an interstate ramp.
Driving vehicle on road in subdivision when gas pedal became stuck and car accelerated out of control striking a garage door and wall with great impact. Air bags did not deploy. Driver escaped with minor injuries. Car was totaled. No else in car. *Tr
Within the passed 2 months I have been experiencing "hard shifts". Very pronounced jolt/jerk when accelerating after a full stop or decelerating to come to a stop. Just researched on this site and found many other consumers with 2004 lesabre's experiencing same situation. Has to do with inferior pressure control solenoid and/or shift solenoids. Apparently gm has refused to recall and replace due to the cost. Can cause premature failure of transmission and they say they are under no obligation to make it...
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right!!! Also have had problems with speedometer and tachcometer. My tach is frozen at 2 and speedometer started giving false readings about 3 yrs. Ago. Did not address because my mechanic told me its very costly. I have to use my garmin to tell me how fast I am going. Happened first time in extreme heat traveling on highway. Then again when it w as raining. Very unsafe situation and again a very costly fix that gm will not address.
While driving home my fuel gauge stopped working. When I got home I turned the car off and then back on and the fuel gauge was now in the 6 position on a clock. Now I have no idea if there is any fuel in the car or not. Luckily I reset the trip meter with every fuel up so I know I can go approximately 300 miles. Although in the winter when we have to idle our car so the fuel mileage goes down and I do not get as many miles on a tank. Hope I don't run out of fuel during the winter. In reading online...
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reviews about this issue it turns out it can get worse and cause the speedometer to stop working. Then I may be speeding and not even know it. I did try and have it fixed but the guy charged me $207 and it did not fix the problem. At the local gm dealership they said they would repair it for $350.
First fuel gauge would not work cost $400.00 To replace system now my mileage works when it wants can/t always tell how fast I am going then all of a sudden it will work. *Tr
Tl* the contact owned a 2003 buick lesabre. After crashing into a tree stump, the contact attempted to reverse and move the vehicle forward when it suddenly accelerated independently, causing the contact to crash into a tree. The air bags failed to deploy. A police report was filed. The contact sustained a concussion, foot, chest, neck, back and knee injuries which required medical attention. The middle rear passenger sustained brain and knee injuries which required medical attention. The vehicle was destroyed. The manufacturer was not notified of the failure. The vin was unavailable. The approximate failure mileage was 150,000.
Has a 1997 buick lesabre and having problems with ignition and I can be driving and it just like it don,t get no juice from engine then when tried to start up it don,t catch in ignition switch. I have spend over 2,000 in this car but every one I take it to says it in the ignition it sounds like it wants to start sometimes it takes up to 6 hours before it starts. *Tr
Car went into cruise control on its own and would not dis-engage. Found out that the cruise control cable clip broke. Luckily we were able to stop the car and no one was hurt. *Tr
Tl* the contact owns a 2005 buick lesabre. The contact stated that after releasing the accelerator pedal, the vehicle suddenly accelerated without any warning. The contact stated that as a result of the failure she crashed into another vehicle. The dealer and the manufacturer were made aware of the problem. There were no injuries. The approximate failure mileage was 39,900.
Tl* the contact owns a 2005 buick lesabre. The contact stated that the speedometer became inoperable. The vehicle was taken to a private mechanic where it was diagnosed that the stepper motor needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 52,300 and the current mileage was 54,000.
Tl* the contact owns a 2000 buick lesabre. The contact stated that while driving approximately 25 mph, the engine stalled as the electronic throttle control warning lamp illuminated. The vehicle restarted on the first attempt and resumed normally. The failure recurred on seven separate occasions. The vehicle was taken to a dealer where the failure was unable to be diagnosed. The manufacture was made aware of the failure. The failure and current mileage was 116,633.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data