Don Koch

My recent service appointment at Ofallon GMC was flawless and a pleasant experience. Also, my vehicle was washed and ready to go at the time promised.. and a pleasant experience. Also, my vehicle was washed and ready to go at the time promised.. More

by GWRICHARDSON342 Verified Customer Verified Customer

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Nick was great to work with. He is very knowledgeable about the GMC trucks and the new technology in them. He is very knowledgeable about the GMC trucks and the new technology in them. More

by dhendrix515 Verified Customer Verified Customer

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As usual when I come in for service, Don Koch, Joe Peters and Nik Halaska greeted me as I walked in. while in the waiting area, Walter Washington, who I bought a new Terrain from last year even stopped by t and Nik Halaska greeted me as I walked in. while in the waiting area, Walter Washington, who I bought a new Terrain from last year even stopped by to say hello. The service was performed in a reasonable amount of time and I was on my way out. More

by robert.oldani52 Verified Customer Verified Customer

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Don’t do right by the customer. Saying they are trying to get assistance but never do Saying they are trying to get assistance but never do More

by CEDWARDS2825 Verified Customer Verified Customer

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I have been using O’Fallon GMC to service my 2023 GMC Acadia, 2016 Chevy Silverado and 2006 Chevy SSR, for a couple years now, always friendly professional service, done in a timely manner. Acadia, 2016 Chevy Silverado and 2006 Chevy SSR, for a couple years now, always friendly professional service, done in a timely manner. More

by JMEYER8 Verified Customer Verified Customer

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We had an excellent experience buying our 2025 used Kia from them . Christy who helped us and sold us the car and she was so friendly. We will defiantly be buying from the again. from them . Christy who helped us and sold us the car and she was so friendly. We will defiantly be buying from the again. More

by tayyylerr17 Verified Customer Verified Customer

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Great staff,always eager to help out with your service needs. They get you in quickly and return your vehicle to you fast. Nice waiting area with complimentary snacks and drinks needs. They get you in quickly and return your vehicle to you fast. Nice waiting area with complimentary snacks and drinks More

by TBERNSTETTER Verified Customer Verified Customer

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They were accurate about timing once they said 45 Min for oil change! Meanwhile they returned the Truck washed and clean. Thanks you. oil change! Meanwhile they returned the Truck washed and clean. Thanks you. More

by yazanaqra Verified Customer Verified Customer

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Nic is really cool. . they were able to get my vehicle done in one day on the same day… i was basically a walk-in my car was diagnosed and repaired that same day..all oth . they were able to get my vehicle done in one day on the same day… i was basically a walk-in my car was diagnosed and repaired that same day..all other dealers were booking 3-6 weeks out More

by ebuchanan85 Verified Customer Verified Customer

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The Service Department is the best! ! Don, Nik and Joe always greet me when I arrive. The service is performed quickly and efficiently!! ! Don, Nik and Joe always greet me when I arrive. The service is performed quickly and efficiently!! More

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