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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Justin was great to deal with. Made my purchase simple and I would recommend him to everyone whose needs a vehicle. Made my purchase simple and I would recommend him to everyone whose needs a vehicle. More
Roger was our salesman and did a great job. Very professional and patient. He has sold our son and granddaughter vehicles also. Would recommend him and the dealership. Very professional and patient. He has sold our son and granddaughter vehicles also. Would recommend him and the dealership. More
Service was finished faster than expected. ..oil change, tire rotation, software update. Made us happy. ..oil change, tire rotation, software update. Made us happy. More
Great would recommend to everyone had a great experience Paul was polite and helpful and great Paul was polite and helpful and great More
Thanks for your professionalism. ! I love my envista.! Paul was so helpful and friendly.! Shop there for your car needs! Thanks again.! ! I love my envista.! Paul was so helpful and friendly.! Shop there for your car needs! Thanks again.! More
Mr. Walter Washington made buying a car an easy process! Very knowledgeable!! Very Patient. Thanks Again!! Very knowledgeable!! Very Patient. Thanks Again!! More
Devan Walls is a very polite, considerate and conscientious sales professional. He was very concerned with my specific needs and went the extra mile to accommodate me. I drove two hours to buy conscientious sales professional. He was very concerned with my specific needs and went the extra mile to accommodate me. I drove two hours to buy a 2025 Hummer from him. O’Fallon GMC has a great team from the owner to the finance department. I am very pleased. More
I was dealing with roger and he was extremely patient with me through the whole process and very carefully laid everything out for me to help me make my decision with me through the whole process and very carefully laid everything out for me to help me make my decision More
Had a very good experience. Everyone was professional and knowledgeable. A special thank you goes to Roger as he was our salesperson and worked hard to make sure all was good. Everyone was professional and knowledgeable. A special thank you goes to Roger as he was our salesperson and worked hard to make sure all was good. More
Enjoyed everyone there. Process was simple and easy and felt like they were good to deal with. Process was simple and easy and felt like they were good to deal with. More