NHTSA complaint #11607445

Owner complaint summary

July 21, 2024 On June 1, 2024, while driving at normal speed under normal conditions, 2020 Chrysler Pacifica (with 14,600 miles) engine seized up, serpentine belt tore, power steering lost, and all lights went on within seconds. I immediately pulled to side of busy 495 Beltway. Dealership concludes that mounting bolts holding alternator in place simply sheared off, broke off causing alternator to drop into engine, tearing belt, breaking AC hose and chain of other breakages. As it turns out, this exact incident has been reported by others on the Chrysler Pacifica Forum online with pictures. Without obvious explanation, vehicle engine shuts down resulting in a very dangerous situation with loss of all control of the vehicle, including steering. One possible explanation is that the bolts are made from a mixed alloy and are very weak or that the bolts holding alternator as well as other engine components are over-torqued resulting in sudden snap breaking of multiple bolts. It is a very dangerous as well as helpless situation. Our vehicle has been at the dealership for over 6 weeks as they negotiate with Stellantis. The warranty expired in March 2024. Estimated cost of replacing alternator (the screws sheared off in such a clean manner that they cannot be extracted from the alternator), AC hose, serpentine belt, battery and more is at $6500 now. The mini-van has 14,600 miles and is used primarily for my 100% disabled veteran husband and his medical appointments. In summary, I am alerting the NHTSA as others hopefully have. This exact same experience of an engine seizing up due to over-torqued engine mounting bolts cleaning shearing off while driving at highway speed is extremely dangerous and cannot be due to normal owner driving/vehicle wear and tear. I recommend that the NHTSA do a further inquiry to this matter to ensure that responsibility is taken with Chrysler to prevent more serious accidents in the future. I will try to enclose photos. Thank you -