NHTSA Complaint #11477035 — 2021 GMC YUKON XL

While traveling at highway speeds, the vehicle suddenly and without warning lost power. All gauges remained in the normal range. After pulling on to the shoulder of a highway and turning the vehicle off, the vehicle would not start. After being towed the dealership, the vehicle would not power up. Dealership checked DTCS and found code P0016 Crankshaft Position Sensor and Intake/Single Camshaft Position Sensor Correlation. Dealership inspected wiring for chaffing and tested camshaft position sensor circuitry and all found in normal condition. Dealership followed document ID: 5646662 diagnostic procedure inspecting camshaft position sensor and camshaft actuator solenoid valve for incorrect installation or damage. While inspecting, dealership found internal engine bearing material in oil indicating internal mechanical failure. Dealership removed engine oil pan and #1 and #2 connecting rods and found bearings spun causing catastrophic engine failure. Crankshaft main bearing cap #3 also found discolored from extreme heat. Dealership then followed bulletin #22-NA-074 for replacement of engine oil, cooler lines and engine oil cooler after connecting rod and main bearing damage The vehicle only had 17,067 miles.