Vehicle has no warning of issues. Regular maintenance had been performed and had 80k miles. Driving down a 4 lane the engine locked up and lost power. We have been waiting on it to be repaired for 4 months now. The engine is back ordered from GM and no one can find used ones. We found a refurbished one but it also locked up within 30 minutes of being installed. I was warrantied so now we are having ours rebuilt but is costing us $14k.