About

Jim Trenary of Union Strives to be the Union, MO Area's Go-To Automotive Resource

Here at Jim Trenary of Union, proudly serving St. Clair, Sullivan and Washington, MO, we know that there's a lot more to buying a car than... well, simply buying a car. Our team is here to guide you through every facet of your automotive experience from helping you shop for the perfect new or used GMC model to helping you keep your ride in tip-top shape with expert auto service and genuine OEM parts. We're here to help from every angle of the buying and owning process, and we're eager to help you realize your automotive dreams.

See Why Our Loyal Customers Trust Jim Trenary of Union Year After Year

From the moment you step into our showroom, you're more than just a customer to us; you're an honored guest, and our only aim is to serve your needs to the fullest. To that end, our team will go the extra mile to provide you with compelling options for new and used car shopping. We'll gladly work with you on financing, no matter what your budget may be. And if you ever need help with car troubles in the years down the line, you can always count on our team of certified service technicians to provide you with the latest in genuine GMC parts and simplify your service experience.

Come See us at Jim Trenary of Union to Get Started Today

Here in our Union showroom, not far from St. Clair, Sullivan and Washington, MO, we're ready to assist you. We can answer any questions about GMC options, and help you find your next vehicle or take care of your current one. We hope to help and see you soon!

Why Buy From JIM TRENARY OF UNION, INC.

Car Shopping Made Easy

We provide a vast selection of new and used vehicles, exceptional car care and customer service with a smile!

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Exceptional Customer Service

We are committed to providing amazing customer experiences.

Meet Our Staff

We Keep You Going

Our service center is here to help ensure you enjoy many great years of driving with the vehicle you purchase from us.

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Thoughtful Amenities

Whether you are waiting for your vehicle to get serviced, picking up a part for your vehicle, or stopping by to check out a new vehicle for yourself, we offer a wide range of amenities to enhance your experience here! Come by, look around and check what we can offer you!

New Inventory

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Pre-Owned Inventory

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Service Department

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Parts Department

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  1. JIM TRENARY OF UNION, INC.

    1001 N HWY 47
    UNION, MO 63084

    • Sales: (636) 388-7006
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Get in Touch

  • Contact our Sales Department at: (636) 388-7006
  • Monday9:00 am - 7:00 pm
  • Tuesday9:00 am - 6:00 pm
  • Wednesday9:00 am - 7:00 pm
  • Thursday9:00 am - 6:00 pm
  • Friday9:00 am - 7:00 pm
  • Saturday9:00 am - 5:00 pm
  • SundayClosed