O'Fallon Buick GMC in O Fallon including address, phone, dealer reviews, directions, a map, inventory and more

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2150 Technology Drive
O Fallon, MO 63368

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Sales: 636-409-5328

Used Cars: 636-409-5324

Hours Toggle

Sales Department

Sun Closed
Mon 9:00am – 8:00pm
Tue 9:00am – 6:00pm
Wed 9:00am – 8:00pm
Thu 9:00am – 6:00pm
Fri 9:00am – 8:00pm
Sat 9:00am – 6:00pm

Service Department

Sun Closed
Mon 7:30am – 6:00pm
Tue 7:30am – 6:00pm
Wed 7:30am – 6:00pm
Thu 7:30am – 6:00pm
Fri 7:30am – 6:00pm
Sat 7:30am – 1:00pm

About O'Fallon Buick GMC

At O'Fallon Buick GMC, we're more than just a car dealership in O'Fallon. We're also members of the greater St Peters, Chesterfield, St Louis St and St Charles MO communities, who work and live here just like you, and we want only what's best for our neighbors. We strive to support community initiatives and events, and we're committed to delivering the best customer service around, from new Buick and GMC sales, to used vehicles, to finance and service. We provide the best of the best to all our customers. Whatever you're shopping for, our sales team is here to ensure a seamless experience throughout every step of the vehicle-buying process. Know exactly what you want? Great! We'll help you secure the best financing for your budget. Not sure where to start? No problem! We can help you narrow down your options, so you can select the best Buick or GMC for your needs.

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