
O'Fallon Buick GMC
O'Fallon, MO
Hours
Sales/Showroom
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 6:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 6:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
Service
Monday 7:00 AM - 6:00 PM
Tuesday 7:00 AM - 6:00 PM
Wednesday 7:00 AM - 6:00 PM
Thursday 7:00 AM - 6:00 PM
Friday 7:00 AM - 6:00 PM
Saturday 7:00 AM - 1:00 PM
Sunday Closed
Parts
Monday 7:00 AM - 6:00 PM
Tuesday 7:00 AM - 6:00 PM
Wednesday 7:00 AM - 6:00 PM
Thursday 7:00 AM - 6:00 PM
Friday 7:00 AM - 6:00 PM
Saturday 7:00 AM - 1:00 PM
Sunday Closed
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Very professional and trustworthy dealership with hardworking and determined dealers, who do whatever they can to get you the deal you want. hardworking and determined dealers, who do whatever they can to get you the deal you want. More
I recently had the pleasure of working with Devan at O’Fallon Buick GMC while purchasing my new 2025 GMC truck, and I can't say enough about how outstanding my experience was! From the moment I walked i O’Fallon Buick GMC while purchasing my new 2025 GMC truck, and I can't say enough about how outstanding my experience was! From the moment I walked into the dealership, Devan was approachable, knowledgeable, and genuinely invested in helping me find the perfect vehicle. He took the time to understand my needs, answered all my questions, and provided insightful recommendations based on my preferences. Devan extensive knowledge of the various models and features was incredibly helpful and made the decision-making process much easier. What truly stood out was their commitment to ensuring I was completely satisfied with my purchase. Devan went above and beyond, providing a seamless and enjoyable buying experience. I drove away feeling confident in my choice and excited about my new truck! I highly recommend Devan to anyone looking for a new vehicle. Thank you for making this a wonderful experience! More
Beau gave me exceptional service in the process of buying my car. Will be suggesting him for all of my friends looking for a car my car. Will be suggesting him for all of my friends looking for a car More
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
The Service Department is important in that it makes or breaks the dealership. I have been taking our cars to O’Fallon Buick GMC for quite some time. Don, Nik and Joe are very friendly and they explain th breaks the dealership. I have been taking our cars to O’Fallon Buick GMC for quite some time. Don, Nik and Joe are very friendly and they explain the service your vehicle needs and the cost for the repair. Because of them, my wife and I decided that we would purchase a new Terrain Denali from the dealership. In the sales department Walter Washington served us and did a great job. More
It was awesome and friendly. I would recommend everyone go there for their cars and service!! I would recommend everyone go there for their cars and service!! More
I have bought an Acadia and Sierra from Blake. He is always very straightforward with pricing. He is always very straightforward with pricing. More
Everyone was very informed, helpful and friendly…. .salesman, finance person and parts person. Any issues or questions were addressed right away! .salesman, finance person and parts person. Any issues or questions were addressed right away! More
The sales person (Christy) was knowledgeable, friendly, no pressure and made me feel welcome. I felt good about the deal that I got. The vehicle is beautiful and I love if no pressure and made me feel welcome. I felt good about the deal that I got. The vehicle is beautiful and I love if More
A very pleasant professional dealership. Staff awesome ,very friendly and caring. Good selection of cars. Staff awesome ,very friendly and caring. Good selection of cars. More