My 21 Yukon SLT recently went back to the dealership on a hook. Was on the highway. Slowing down to about 45 mph due to traffic and upcoming exits. Came to a compete abrupt stop. Felt like someone had impacted me from behind. As per observation, no one was that close yet. Vehicle stalled. I restarted then it was surging and jumping forward like a frog. I was able to limp it to the shoulder. All dash lights flashing saying engine & transmission issues detected. Couldn't restart after resting on shoulder. Sat at dealership for over a week before diagnosis. They say the front deferential went out. drive shaft broke. drive shaft hit oil pan and seized up the motor. I had no impact with any object, just driving along highway after leaving dealership for a 3rd row seatbelt bolt recall. I've had no issues or any warning that something was wrong. All maintenace and service up to this point with no red flags or issues detected.
Suffered a concussion, neck and back issues from this incident. Will probably be months before I see my vehicle again. New engine is at least 3 weeks out. Thank goodness for that warranty. i've had it just over a year. Only 8552 miles and already dead in the water...