2006 Buick Lucerne Vehicle speed control Problems

“When driving and accelerating, vehicle looses power. This is dangerous. This is an intermittent problem and no check engine light comes on. The speed does not play a part in this problem nor does the amount of gas in the fuel tank. The vehicle will loss power and have a big jerk and bang when accelerating out of a parked position. I have had the vehicle stall when turning onto a street and start back up. This morning in pulling out onto a busy street in my neighborhood,the car lost power, but regained power before I got hit. This is dangerous. …”

“Vehicle is a 2006 Buick Lucerne cx with 40,000 miles. About 2 months ago it started to go dead without any warning. The first occurrence was jan 15, 2014 with my wife driving. The next shutdown on mar 4, 2014, occurred in rush hour traffic. There was an audible signal accompanied by a service traction control warning, followed immediately by a throttle control warning and complete engine shutdown. I was able to coast across 2 traffic lanes into a parking area with great difficulty while steering and braking without power assist. Tried to restart the engine but got ?throttle disabled? Message. …”

“This has happened at least 4 times. We asked the Buick dealer if there have been any complaints and they said no. It has happened the last 4 years and again today and it is kind of scary as it could be dangerous if we didn't put our foot on the brake firmly when it happens. What happens is if we are pulling into a parking place or our garage slowing to a stop the accelerator goes down on its own and if we did not put our foot on the brake it would take off on its own. It last only a few seconds maybe 5 or so and then it stops. We have checked the floor mat and this is not the problem.”

“I purchased a new 2006 Buick Lucerne cxl in 2006. I have numerous times experienced acceleration in my vehicle. I have taken it to a Buick dealer and they drove it and say they didn't notice it. I have also talked to a gmc dealer in the last several years and asked it anyone else has had a vehicle that just speeds up on it's own. I am from a very small town in missouri and 3 other people have purchased the same Buick Lucerne as mine and one of them says he thinks his vehicle may have sped up before, but he thinks he may have let the cruise control on. …”

“On 4 separate occasions my '06 Buick Lucerne (3.8 l)went into uncontrolable excelleration. On long road trips, with the cruise control engaged and doing approximately 70 MPH, when I excelleratedhard, instead of returning to the cruise speed it seemed to lock into a passing gear. Braking didn't stop it, putting it into did not slow the engine revs., however turning off the key and restarting after coasting a little while worked once or twice to stop the revs.. The other times I hit the brakes really hard and it disengaged the cruise and excelleration problem. …”