Jim Trenary of Saint Charles is a part of the Jim Trenary Automotive Group that operates dealerships of Buick, Chevrolet, Oldsmobile, Pontiac, and GMC in Troy, St. Charles and Union, Mo. Jim Trenary of Saint Charles is an exclusive dealer of Chevrolet and offers models, such as Avalanche, Cobalt, Silverado, Impala, Aveo, Equinox, TrailBlazer, Malibu, Colorado, Tahoe, Monte Carlo and Uplander. The dealership provides pre-owned models from various manufacturers, including Subaru, Hyundai, Nissan, Volkswagen, Toyota, Mazda, Chrysler, Honda, Jeep, Dodge, GMC, Buick, Pontiac, Ford, Mitsubishi, Cadillac and Saturn. It has various departments include finance, service and parts. The dealership s finance department offers lease and credit services, and its service department provides vehicle maintenance. Its parts department stocks manufacturer-recommended parts and accessories of various vehicles.