At ~51,000 miles, my 2022 Silverado Trail Boss 6.2L L87 experienced a sudden engine failure while on / exiting the highway. The engine began shaking violently, the check engine light flashed, and it lost all power without warning. It was towed and remained out of service for 28 days. The dealer diagnosed lifter delamination, a scored camshaft, and scored cam, main, and rod bearings. Metal shavings were found in the engine, indicating internal contamination. Despite the severity, the manufacturer approved only an engine overhaul, not a full replacement. The service manager stated, “it’s nearly impossible to get these motors,” pointing to a national shortage due to widespread failures of the 6.2L engine platform. After picking up the vehicle, I immediately noticed a rattling noise from underneath. I returned to the dealer (who also failed to recharge the AC system). They traced the noise to the catalytic converter and muffler and quoted $2,709.24 to replace the full exhaust system. The manufacturer refused to cover the repair, even though the issue appeared immediately after the engine failure. The dealer did not confirm the exact cause, but possible contributing factors include combustion instability, engine misfires, unburned fuel, and extreme vibration during the failure. These conditions can severely impact the exhaust system and emissions components. I was quoted nearly $4,000 for an extended warranty, which I now feel pressured to buy due to loss of confidence in the engine. Metal debris may have affected the oiling system, injectors, or other critical parts. This raises serious safety concerns: sudden power loss at highway speed, compromised emissions components, and the risk of future failures. With the 6.2L under NHTSA investigation, I believe this incident supports further review or recall.