Engine Shut Off Without Warning problems of the 2013 GMC Terrain

My vehicle currently has approx. 54k miles and I began experiencing serious, dangerous defects with the vehicle on 9/12/2018 when I was backing out a parking stall my car just completely shut off with no warning. I was able to place it in park then restart it and drive about a mile before it shut off again as I was approaching a stop light. I had to coast the car onto a nearby street out of traffic for my and my son's safety. I waited a few moments and was able to restart the engine once more and drove about 2 blocks before it shut off again in the middle of an intersection. I pulled over and called the gm dealer where I purchased it to determine if there had been any recalls or a warranty. I was told I would have to cover towing and diagnostic fees and was not entitled to any type of warranty coverage. I had a test of the battery performed which came back that the battery was not good. I purchased a new battery and had it installed that night. Although, I had a new battery I had another episode of the car shutting off with no warning after trying to back out a parking stall. It will also periodically jerk and hesitate to accelerate at low speeds or when trying to accelerate after coming to a complete stop. On 10/22/18 as I was entering the on ramp to get on the highway in rush hour traffic, the car engine shut off with no warning nor light indicators. I put it in park and was able to restart it so that I can move it to a safe location. The car again would feel jerky at low idle speeds and when I tried to accelerate after coming to a complete stop as I was in bumper to bumper traffic. This has been a dangerous ordeal as a pregnant woman with kids in the car, while on a freeway or road I can easily be hit from behind. My car is only 6 years old with 54k miles on it and should not have such severe defects.

Stalling issues - I have an issue with my vehicle stalling - the vehicle will stall out after staring the ignition and putting it in reverse or drive. Once you give it the gas it will just shut down - loses all power. It's happened when backing out of a parking space, it's happened at a stop sign before pulling onto a roadway, it's happened leaving my driveway - I have researched an have seen that this is a common issue with this make and model and don't understand why there has not been a recall. This is putting people's life in danger, I am looking to get rear ended or knocked out of the road by a truck or something. The code is coming up as an oxygen sensor -.

The contact owns a 2013 GMC Terrain. While driving approximately 55 mph, a sound was heard from the engine compartment and the engine shut down. There were no warning indicators illuminated. The vehicle was coasted to the side of the road and towed to bees Chevrolet (2100 old us 27, st. Johns, mi, 48879, 989-224-2345) where it was diagnosed that the pvc froze and caused the rear crankshaft seal to blow. The technician recommended and replaced the engine. The manufacturer was made aware of the failure and referred the contact to NHTSA. The failure mileage was 90,000.