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The GMC Sierra 1500 gives you some of the best towing and hauling capability you can buy and it has that handsome GMC exterior. 

The Encore GX is the smallest model in Buick's all-SUV lineup and it's also the most popular. This subcompact offers a choice of turbocharged three-cylinder engines and gives you money-saving fuel economy. With an affordable price, the Buick Encore GX is an exceptional value and it has a surprising amount of room inside. Seats are spacious for the class and the Encore GX has quite a few standard features. Here's more about the new 2025 Buick Encore GX that's available right now at O'Fallon Buick GMC in O'Fallon, MO.

Don’t Wait Until the New Year for a New Car

Last year, we offered 8 days of amazing car offers to drivers all around O’Fallon, St. Louis and beyond! This year, we’ve put our best foot forward to offer GMC and Buick enthusiasts amazing car specials before ringing in the new year. These offers are almost too good to advertise, so call us today if something in our inventory catches your eye.

The 2024 GMC Terrain Denali has an eight-inch GMC Infotainment System with Connected Navigation, providing real-time updates for points of interest, traffic, fuel prices, parking, and more.

For those seeking the ultimate in midsize SUV luxury, look no further than the top-of-the-line 2025 GMC Acadia Denali. Here is why we think O'Fallon Buick GMC customers are sure to love the Acadia Denali.

Overview of the 2024 GMC Sierra EV Denali

The 2024 GMC Sierra EV Denali Edition 1 represents GMC's entry into the electric truck market, blending robust performance, advanced technology, and high-end luxury. Built on GM's Ultium platform, this all-electric truck showcases a forward-thinking design and remarkable capabilities aimed at redefining electric pickups.
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The 2025 Buick Envista is an appealing new entry in the compact SUV segment that has quickly become a favorite here at O’Fallon Buick GMC. Here are three key things you should know about this stylish crossover:

If you're seeking a mid-size pickup truck that combines rugged performance with premium features, look no further than the 2025 GMC Canyon at O'Fallon Buick GMC. 

With seating for up to seven passengers and versatile configurations, the 2024 Buick Enclave provides ample room for family, friends, or cargo. The cabin has perforated leather-appointed seats, tri-zone automatic climate control, and heated front and second-row outboard seats for optimal comfort in any weather.

O'Fallon drivers who need a truck that works as hard as they do will appreciate the 2024 GMC Sierra 2500 HD's versatile pickup bed, which comes standard with a convenient assist step for easy access to cargo. The available MultiPro tailgate offers six different functions for flexible loading solutions.