2000 Buick Lesabre acceleration problems

Filed Dec 20, 2025 · Acceleration, Fuel system · TN · fire

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 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

Filed Jul 28, 2025 · Acceleration, Driver assistance · TN · fire

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

Filed Sep 11, 2017 · Acceleration · 195,000 miles · IA

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.

Filed Apr 28, 2014 · Acceleration · 116,633 miles · PA

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.

Filed Nov 15, 2010 · Acceleration · 32,000 miles · OH

Car won't accelerate. Sitting at a stop light on the highway and when the light turned green and the gas pedal was pressed, nothing happened for a few seconds. Then when it did respond we had to floor it to get it to 30 MPH.

Filed Sep 16, 2010 · Acceleration · 156,000 miles · MI

Tl*the contact owns a 2000 buick lesabre. While the contact was driving approximately 55 MPH, the vehicle unexpectedly increased acceleration up to 70 MPH. The brake pedal was applied numerous times with extensive force and the vehicle continued to accelerate. The contact down shifted to a lower gear, followed by no response. The speed rate reduced between 10-15 MPH when the gears were shifted into the reverse position which allowed the vehicle to stop properly while the brakes were applied. The vehicle was towed to an independent mechanic for storage due to the safety issue pertaining to the acceleration malfunction. The vehicle was not diagnosed or repaired. The failure mileage was approximately 156,000.

Filed Apr 29, 2008 · Acceleration · 66,000 miles · TN

I placed the shift lever in reverse and depressed the accelerator pedal. The car accelerated rapidly. I depressed the brake pedal very hard and held it down. The car alternately stopped, accelerated, stopped, accelerated etc 3 or 4 times before coming to a full stop: total distance traveled - approximately 30 feet. I repeated the above procedure in forward gear and got the same result. Prior to this incident the throttle system did not appear sticky or off-normal. Post incident, the throttle appeared slightly sticky. Approximately 18 months ago I reported a sticky throttle to my buick dealer, they serviced the throttle system and the problem was solved. As stated above, the throttle did not give indication of a problem this time.

Filed May 23, 2005 · Acceleration · MO · crash

2000 buick lesabre experienced sudden acceleration on three occasions. *mr the problem was intermittent. On one occasion, the consumer was slowing to stop behind another vehicle that had stopped at a stop light when the consumer experienced sudden acceleration and caused minor damage. The last time this happened, the vehicle had come to a complete stop at a signal when the sudden acceleration occurred. The dealer was unable to find the cause of the problem. *sc

Filed Feb 16, 2005 · Acceleration, Steering · 50,000 miles · OH

The cruise control in the consumer's 2000 buick lesabre failed at 50000 miles. *nm there was a stability system problem due to a corroded sensor which was caused by the inability of the insulating material protecting the sensor. A new left front bearing hub was replaced due to corrosion in the plug. The steering wheel sensor on the lower steering column had to be replaced. The vehicle would abruptly come to a stop three times in 75 feet just as if the brakes were applied but the driver had no control of the situation. The consumer requested reimbursement for the parts that had been updated and the labor.

Filed Nov 22, 2004 · Acceleration, Airbags · 34,000 miles · MA

While driving dash lights illuminated intermittently. The air bag light illuminated more than any other light. Also, the driver's side back of seat laid automatically on its own. This incident happened while the consumer was driving. Upon having a full tank of gas, the meter would read empty. The vehicle was taken to the dealer. The consumer was told that there was an electrical problem. *ak there was a noise in the dash, the fuel gauge would jump to empty, the speedometer would go to zero, the headlight would go dim when the weather was rainy, there was a rumble in the left front end, a shimmy when the brakes were applied and when raining, the dash light would go from bright to dim the air bag light was intermittent, the radio would cut out, the driver's seat was inoperative, the transmission would slip into overdrive on slight acceleration, the automatic doors were inoperative, the cruise control was inoperative, there were intermittent loss of heat would start blowing cold air, the oil pressure light would come on while the fuel gauge mileage would not stay on, the electrical remote was inoperative, and there was a leak in the engine.