My 2019 GMC Sierra Denali shut off suddenly while I was stopped in traffic. The engine died, the steering wheel locked, and the dashboard displayed warning messages including aœESC,a aœpower,a and another I didnat catch. The truck would not restart despite attempts. The check engine light is now on. This happened without warning, and I had no prior mechanical issues. The vehicle is well maintained, garage-kept, and recently received a full service including oil change, brake work, and 75K-mile recommended service. I fear this is related to a known issue affecting other GMC engines under investigation for sudden power loss.