As of 2014 [update] , each Wolverine operates with two General Electric Genesis P42DC locomotives, 3-5 Horizon coaches, and an Amfleet cafe/business class car. In the winter, Superliners are sometimes used. The equipment pool for the Wolverines comprises 14 Horizon coaches and Amfleet cafe/business class cars (one is shared with the Blue Water ), split across three consists . The locomotives usually operate in a push-pull configuration, however sometimes both will be at the head end. Due to the FRA requirement of positive train control for operations above 79 mph, locomotives on the Wolverine are required to have Positive Train Control, supplied by Amtrak's Incremental Train Control System. Because of this modification the units are usually captive to the Michigan services.
Turboliners arrived on the Detroit run on April 10, 1975. Additional equipment allowed Amtrak to add a round-trip in late April; the arrival of a third trainset in May made Chicago–Detroit the "first all-turbine-powered route". After one year of operation, ridership on the corridor had increased by 72 percent. The fixed capacity of 292 passengers on an RTL trainset proved an impediment; Amtrak could not add capacity when demand outstripped supply. Amtrak replaced one of the trainsets with a conventional locomotive hauling then-new Amfleet coaches in 1976; Turboliner service ended altogether by 1981 as more Amfleet equipment became available.