general problems of the 2016 Buick Lacrosse

Control module,left and right rear wheel speed sensors.

At highway speeds with the adaptive cruise control engaged, the brakes are heavily applied when other vehicles or obstructions are not observed. Acc engaged on controlled access highway no vehicles or obstructions and random hard braking takes place. Vehicle has been taken to the dealer numerous times for this condition and dealer reports no problems.

Tl the contact owns a 2016 Buick Lacrosse. While the vehicle was in reverse, the contact attempted to shift into drive, but the vehicle failed to move forward. In addition, while accelerating from a stop, the vehicle failed to move forward. All the warning indicators illuminated on the instrument panel, including the check engine wrench, traction control, and stabilitrak. In addition, the speedometer and temperature indicators would go to zero. Also, when driving 50 mph, the rpms would go up and down. The contact stated that the vehicle was taken to texan GMC Buick (18225 eastex fwy, humble, TX 77338, (281) 973-3117) six times where it was diagnosed that multiple failure codes were found and there was a loss of communication. The dealer performed a calibration and cleared all the codes. The vehicle was test driven and all the gauges were at zero. The following failure codes were found: u0100-u2099-u0140-u0120 (stored in trans, bcm, park brake, fuel pump control module, engine control module failing intermittently, replace engine control module assembly, performed programming and mobilizer learn and setup procedures, clear fault, and road test). The failure recurred and the vehicle was taken back to the dealer. The manufacturer was notified of the failures and provided case number: 9-5302718071. The approximate failure mileage was 30,000.

Tl the contact owns a 2016 Buick Lacrosse. While driving 3 mph in a parking light and making a slight turn, the vehicle accelerated forward. The contact stated that the floormat was not in the correct position. There were no warning indicators illuminated. The contact called on star and was informed that the vehicle was performing as designed. The local dealer and manufacturer were not contacted. The vehicle was not diagnosed or repaired. The failure mileage was 13,826.

Adaptive cruise engages antilock brakes in a random manner even when no car is in front of you when the vehicle is in motion at a variety of different speeds. Has happened multiple times for several months.