Welcome to Jim Trenary of Union

Thank you for visiting Jim Trenary of Union, your local Union Chevrolet, Buick, and GMC dealership in Missouri. We sell new Buick, GMC, and Chevrolet vehicles as well as a great selection of used cars & trucks near St. Louis with superior customer service. Located at 1001 North Highway 47, we're easily accessible from Interstate 44 at Exit 247. Please view our hours and directions page for specific driving instructions.

Jim Trenary of Union proudly sells new Buick vehicles as well as new Chevrolet cars, trucks, and SUVs and new GMC trucks & SUVs near St. Louis. If you're looking for a Sierra, a Silverado, or an Enclave, you'll find them here at Jim Trenary. At our Union Buick, GMC, and Chevrolet dealership you can find the Cruze, the Regal, and the Acadia. Apply for financing and schedule your test drive with Jim Trenary today to see why more St. Louis Chevrolet, Buick, and GMC drivers prefer to do business with us in Missouri.

Shopping for used cars in Union? Looking for a great deal on used trucks in St. Louis? Jim Trenary of Union is a great place to buy used cars & trucks in Missouri with many makes and models to choose from. If you're looking for certified pre-owned GM vehicles or used cars below $10K, visit Jim Trenary first to take advantage of our large selection and special offers.

When your Buick, Chevrolet, or GMC needs routine service or repairs, you can rely on our service department at Jim Trenary of Union to keep your car in perfect condition and on the road. From oil changes to installing new tires and major engine repairs, we can do it all. Schedule your service appointment to get started. Looking for GM parts in St. Louis or GM accessories in Union? Our parts department is fully stocked with GM OEM parts & accessories to fill your order.