While driving on a busy highway, the vehicle lost all acceleration. Seconds later, the entire truck shutdown. Lucky, I was able to get into the right hand lane prior to losing complete power, which allowed me to steer the truck onto the shoulder. It appears that an investigation has been launched into vehicles equipped with the GM 6.2L V8 L87 engine. This catastrophic engine failure not only put me in a fairly unsafe situation, it is costing me $13,800 to replace the engine on a 2022 GMC Sierra Denali.