For those in the market for a capable, premium SUV, the latest GMC lineup is sure to impress.
Inside the Spacious 2025 GMC Savana 2500 Passenger Van
When transporting a large group in St. Louis, the 2025 GMC Savana 2500 Passenger Van delivers the space and amenities to keep everyone comfortable. The standard 12-passenger seating features a 2-3-3-4 configuration, with the rear 4-passenger seat in a convenient 50/50 split design. Front bucket seats are trimmed in durable vinyl and include inboard armrests and head restraints.
The 2025 GMC Sierra 3500 HD: A Heavy-Duty Powerhouse
The 2025 GMC Sierra 3500 HD, available now at O'Fallon Buick GMC in O'Fallon, MO, offers a range of powerful engine options to tackle even the toughest jobs. With a 6.6-liter V8 gasoline engine producing 401 horsepower and 464 pound-feet of torque or the brawny 6.6-liter Duramax turbodiesel V8 cranking out an impressive 470 horsepower and 975 pound-feet of torque, the Sierra 3500 HD has the muscle to handle heavy payloads and trailers with ease.
Buick OEM Service Centers Are Best for Buick Repairs
Why Service Your Buick at an OEM Dealership?
When it comes to maintaining your Buick SUV, choosing a certified OEM Buick dealership for service ensures that your vehicle receives the best care possible. One of the most crucial reasons to service your Buick at an authorized dealership is to protect your warranty eligibility, especially in the first few months and years of ownership. New Buick models come with a comprehensive manufacturer’s warranty, covering repairs and maintenance when performed by certified technicians using approved parts.
Why the 2025 GMC Sierra 1500 Should Be Your Next Towing Partner
When it comes to towing, the 2025 GMC Sierra 1500 is a light-duty truck that offers unrivaled capability.
Streamline Your Shopping Experience at O'Fallon Buick GMC
Buying a new or used vehicle is an exciting experience, and O'Fallon Buick GMC is here to make the process as smooth and enjoyable as possible. O'Fallon Buick GMC is committed to helping you find the ideal financing solution. With a wide range of options available and a team of knowledgeable experts by your side, you can feel confident in making your next vehicle purchase at our dealership.
Understanding the Car Leasing Process in O'Fallon, MO

Understanding the Car Leasing Process
Leasing a new car is an alternative to buying that allows drivers to enjoy a brand-new GMC vehicle without committing to long-term ownership. For GMC enthusiasts around Wentzville, Troy or St. Louis who want the joy of ‘trying’ multiple Buick or GMC vehicles, leasing might be the perfect option! The lease process begins with selecting a car and negotiating lease terms, which typically include the lease duration, monthly payments, mileage limits, and any upfront costs.
Step Inside the Spacious and Luxurious Interior of the 2025 Buick Enclave
For growing families seeking a premium 3-row SUV with an abundance of space and amenities, the 2025 Buick Enclave delivers in a big way. Seat your crew inside the largest Buick SUV available at O'Fallon Buick GMC.
Step Inside the Luxurious 2025 Buick Envista Interior
The 2025 Buick Envista offers a premium, spacious interior that will elevate your driving experience. This compact SUV seamlessly blends comfort, technology, and style to create a cabin you'll love spending time in. Visit O'Fallon Buick GMC in O'Fallon, MO to explore the impressive Envista for yourself and see all that it has to offer.
Why Service Your GMC at a GM Dealership like O’Fallon Buick GMC
Servicing your GMC with a GM Certified Dealership
When it comes to maintaining your GMC vehicle, choosing a GM dealership for service ensures you receive the highest level of expertise and care. GM-certified technicians are specifically trained to work on GMC models, using state-of-the-art diagnostic tools and equipment designed for your vehicle. This expertise allows them to quickly identify and address any issues, helping to prevent costly repairs down the road while keeping your GMC running at peak performance.