2012 Buick Enclave problems

“While driving, the vehicle suddenly and without warning experienced a severe, dangerous loss of acceleration. The dashboard immediately displayed a "Reduced Engine Power" warning message along with a "Service StabiliTrak" light, forcing the vehicle into an immediate electronic fail-safe "limp mode." This sudden, drastic reduction in engine power severely restricts the vehicle's ability to maintain safe roadway speeds, accelerate from a stop, or merge safely into traffic, posing an immediate rear-end collision hazard to myself and other motorists. Furthermore, the defect simultaneously disables critical active safety systems by shutting down the StabiliTrak and Traction Control networks. A diagnostic scan revealed code P2138 (Accelerator Pedal Position Sensors 1-2 Correlation Not Plausible). Investigation reveals that this is a widespread, systemic safety defect caused by design flaws in the vehicle's body. Rainwater and moisture from clogged factory sunroof drains or cowl seams leak directly down into the interior cabin wall, pooling into the primary instrument panel-to-body wiring harness block (X218 connector) in the driver's side footwell. This water…”

“The contact owns a 2012 Buick Enclave. The contact stated that while driving at various speeds, the vehicle lost motive power and hesitated while attempting to accelerate and depressing the accelerator pedal. During the failure, the check engine warning light momentarily illuminated. The vehicle was taken to a local mechanic who was unable to determine the cause of the failure. Additionally, while opening the rear liftgate door, there was a clicking sound coming from the driver's side rear liftgate door strut. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was provided. The local dealer was not contacted. The contact was informed that the VIN was not included in NHTSA Campaign Number: 15V415000 (STRUCTURE). The failure mileage was 118,000.”

“PURCHASED CAR USED FROM CAR DEALER. DEALER STATES HIS MECHANIC INSPECTED VEHICLE. I DROVE OFF THE LOT WITH NO ISSUES. LESS THAN 48 HRS LATER, SERVICE AIRBAG LIGHT COMES ON. VEHICLE WAS STATIONARY, IGNITION TURNED ON WHEN LIGHT CAME ON. LIGHT COMES ON, GOES OFF AND REPEATS THIS...”

“I am reporting three unexpected vehicle behaviors that raise safety concerns. While stopped at a red light with the transmission in Drive and my foot remaining on the brake pedal, the vehicle suddenly lurched forward. I had not released the brake. On another occasion, after I had parked and turned the vehicle off, the driver’s power seat moved all the way backward and the seatback reclined all the way down without my intentionally activating those adjustments. Afterward, while the vehicle was still off, the doors repeatedly locked and unlocked without anyone touching the controls. I am concerned about unexpected vehicle movement and uncommanded operation of the seat and door locks. I request that NHTSA review these incidents for a possible safety defect.”

“The contact owns a 2012 Buick Enclave. The contact stated that while driving at various speeds, the vehicle lunged forward while accelerating. The failure was more persistent at speeds of 40 MPH and lower. There were no warning lights illuminated. Additionally, while turning the steering wheel to the left or the right there was a clunking sound coming from the steering wheel. The vehicle had been taken to an independent mechanic where it was diagnosed that the rack and pinion needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The failure mileage was 83,000.”

“When pulling onto a county road with traffic the transmission kept slipping and the engine would rev higher. It took a lot longer to get up to speed and the cars behind me had to brake quickly.”