Rear main seal failure from frozen PCV valve
ENGINE
40 NHTSA complaints · 2022-01 → 2026-03
“Due to cold weather the PCV froze which caused pressure to build up in the vehicle’s crankcase which caused the rear main engine seal to pop out. Results in losing all engine oil without and warning driving down the highway. I was lucky enough to get off the highway but”
“The contact owns a 2017 GMC Terrain. The contact stated that after his wife had parked the vehicle, the oil light appeared on the instrument panel. Upon exiting the vehicle, she discovered that oil had leaked onto the ground from underneath the vehicle. The contact was called to”
“While driving on the highway with my child, vehicle suddenly went into reduced power mode. 5 minutes later after exiting the highway, the low oil pressure Alert came on. The vehicle was parked two minutes later then towed home. After towing it to my local certified dealership”