Affected models are the Western Star 4700, 4900,5700, and 6900 model years 2017 - 2019.
According to a National Highway Traffic and Safety Administration report “a potential exists for contract between the power stud and bulkhead resulting in potential arcing” increasing the risk of fire.
Daimler will be notifying owners and dealers on May 21st and offers to inspect the pass-through power stud for clearance to the bulkhead and make necessary repairs for free.
If you have questions for Daimler you can contact their North American customer service line at 1-800-547-0712.