Loud Engine Noise problems of the 2010 GMC Acadia

At 80,000 miles, after pulling out of parking, when I applied brakes the car started making rumbling noise from the engine and lurched forward despite pressing on brakes to stop. Pulled into a parking spot, while continuing to fight lurching of vehicle and turned car off to check engine oil, transmission oil, and power steering oil levels. All were fine. When attempted restart of vehicle, loud rumbling noise from engine, check engine light flickered and the car failed to start. Required a tow home from 100 miles away and $400. Hooked up obd, and received the following faults p0008, p0303, p0305, p0017, p0300, p0301. After researching on-line, common faults for timing chain issue estimate $3-4 thousand repair. Also, found 2007-2009 Acadia received extended warranty for same issue. However, 2010 not covered despite finding approximately 15 identical 2010 GMC Acadia on NHTSA site. I will be calling dealership first workday, however expect to be told timing chain issue based on codes and that GMC will not cover the repair since I am outside of the 5 year warranty, despite less than their 100,000 mile coverage.

As car was accelerating to 30 mph in a lane of traffic into a turn, I heard a loud noise. Then, I couldn't move the steering wheel. I tried to pump the brakes, but the car did not stop immediately. I had no control over the steering, and the car eventually stopped in a parking lot. I was petrified. The radio was still on, and the key was still in the on position, but the key could not be turned. GMC simi valley says the problem was a rod to a cylinder that snapped, and was not due to an ignition problem, or related to a current recall. The whole engine needs to be replaced, almost the value of the car, given its current resale value. I would like to request an investigation into another recall event.