2015 Chevrolet Impala Vehicle speed control Problems

“On 10/10/2017 my 2015 Impala 2ltz had sudden acceleration, full throttle. No brakes, no emergency brake, the only way I could stop the car was to put it into neutral ( over 90 MPH by then). Then again on 1/25/2018 the same thing happened again, sudden acceleration, by then I knew I had to put it in neutral to stop. My wife and I were lucky I could maneuver the car around several other vehicles and avoided an accident. Both times I was on the freeway at freeway speeds with the adaptive cruise control engaged.”

“My check engine light came on while driving. I told my car to the mechanic and I was told my mass engine airflow needed to be replaced. Two days later the check engine light was on again. Return to the mechanic and was told my o2 sensors needed to be replaced. Replaced as recommended. I was driving down the highway and the light came on again along with a message that said reduce speed. At this point, my car slowed down by itself while I was going 60 miles per hour. I could not accelerate. Luckily there were no cars behind me. …”

“I was driving on the freeway with the adaptive cruise control on at about 50 to 55 MPH when suddenly the car went full acceleration. I tried to stop the car by turning off the cruise control, turn off the ignition, use the emergency brake, none worked. I then put the transmission and then everything worked, by then I was doing 90 plus miles per hour passing vehicles. I contacted GM and they tried find a problem but did not a problem.they said no codes appeared. This sudden acceleration lasted only a few seconds before I put the car in neutral. …”

“Cruse control deactivates and won't reactivate while cruising at highway speeds. Seems to work again after shutting off and restarting. This has happened several times. Last time it happened the engine also died. Coasted to the side of road, waited a minute and car restarted and seemed fine, but happened a second time a few minutes later. I was on a state highway with light traffic so was in no immediate danger, but would hate for this to happen on a busy six lane interstate. No diagnostic codes were set by the computer system.”

“Sensors on the back bumper went bad due to moisture getting in, screwed up electrical system which is the brains of the vehicle. Chevy needs to recall this car, tons of owners are having this exact problem. My vehicle is currently in the repair shop and the sensors are not available due to the overwhelming number of customers that are having to purchase them. The repair shop cannot even be given an expectant date that the sensors and wiring heirness will be available. Recall theses cars chevy, they know this is a manufacture defect, this is a $1500 fix that the customer is left to pay. …”