general problems of the 2016 Buick Lacrosse

Cars shudders 20-30 mph. Started last year, I needed to get my wife for cancer treatments. Basically, shifted the car manually.

Control module,left and right rear wheel speed sensors.

When braking from 50 mph or 40 mph coming to a stop my car jerks and it’s very hard to stop it uncomfortable hesitation, jerk, or lurch. Almost caused accident twice where I couldn’t stop the vehicle this is very unsafe for me and my family also transmission downshifts and up shifts are really hard in this vehicle.

The contact owns a 2016 Buick Lacrosse. The contact stated that the fuel pump was previously replaced due to the vehicle stalling while driving. The contact stated that the tailgate unintendedly opened while the vehicle was parked and turned off. Additionally, the vehicle jerked while driving from a complete stop, and the vehicle hesitated and shuddered while driving at various speeds. An unknown warning light was illuminated. Onstar was contacted and informed the contact that a dtc for the abs was found. The vehicle was taken to an independent mechanic, where it was repaired for abs failure; however, the failure persisted. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was test-driven. The mechanic diagnosed the vehicle and determined that the transmission had failed and needed to be replaced. The contact stated that the transmission was previously replaced twice due to the failure. The mechanic advised the contact to get rid of the vehicle. The vehicle was not yet repaired. The dealer and the manufacturer were not notified of the failures. The failure mileage was approximately 99,000.

While driving at highway speeds (65+ mph) the information center will display 'reduced engine power' and car will down shift and only reach 45 mph. Causing close to rear-end crash. You have to leave the highway traffic immediately and turn off engine. Re-start engine and continue driving. It has happened twice now. Seems like a software problem.