NHTSA Complaint #11700355 — 2019 GMC SIERRA 1500

While driving my Sierra AT4, my engine shut off with no previous indication of a problem. The dash simply said to restart the vehicle. Unable to do so, I coasted the vehicle into a parking lot. Once it was diagnosed to be a defective engine, I replaced it with a new GM long block assembly paid out of pocket as the vehicle had 210,000 miles on it and was well out of warranty coverage. The first replacement engine lasted 15,000 miles before developing a spun bearing in the engine. GM did cover replacement of the engine assembly. The 2nd replacement engine was installed 12/2022 and lasted until 2/2025. Same engine seizure problem as the original due to the bearing failures that plague this engine series. Engines have always run 0-w20 Mobil1 synthetic as recommended by GM. Vehicle is currently waiting for GM to make a decision to cover it or not.