Pre-Owned 2025 GMC Sierra 1500 AT4 For Sale Boerne, TX

Vehicle Details2025 GMC SIERRA 1500 AT4The 2025 GMC Sierra 1500 AT4 occupies a particularly desirable position in the premium pickup market. It combines the capability of a serious four-wheel-drive truck with the comfort, technology, and interior refinement expected from a modern luxury vehicle. With just 16,670 miles, this Premium Pre-Owned Sierra AT4 at INFINITI of Boerne offers an appealing opportunity to own a late-model, well-equipped GMC pickup without the expense of purchasing new.Power comes from GMC's 3.0-liter Duramax Turbo-Diesel inline-six, an engine that gives this Sierra AT4 a distinctive advantage for drivers who value strong low-end torque, highway efficiency, and long-distance capability. Producing 305 horsepower and an impressive 495 lb-ft of torque, the Duramax is paired with a 10-speed automatic transmission and four-wheel drive. This combination makes the Sierra equally comfortable handling daily driving, extended Texas highway trips, and the demands of an active lifestyle.Adding to the ownership value is the complimentary Synergy Commitment, exclusive to INFINITI of Boerne. This additional powertrain protection provides coverage for a total of 7 years or 100,000 total odometer miles, whichever occurs first, from the original in-service date. It is an important distinction that complements the vehicle's premium equipment and INFINITI of Boerne's approach to preparing its Premium Pre-Owned inventory.THE AT4: CAPABILITY WITHOUT COMPROMISING COMFORTThe AT4 is designed for buyers who want more than the appearance of an off-road pickup. Its factory off-road suspension with a 2-inch lift, Rancho monotube shocks, underbody skid plates, two-speed transfer case, and automatic locking rear differential give it meaningful capability beyond paved roads.Those features matter in Texas, where a truck may spend Monday through Friday traveling between home and work before heading to a ranch, hunting property, lake, or Hill Country retreat on the weekend. The AT4's added ground clearance and four-wheel-drive hardware make it especially well suited to drivers who regularly encounter gravel roads, uneven terrain, and changing driving conditions.Yet the Sierra AT4 doesn't require its owner to sacrifice everyday refinement. GMC developed this trim to balance rugged mechanical capability with the comfort and technology of an upscale pickup. The result is a truck that feels equally appropriate arriving at a business meeting or heading out for a weekend away.DURAMAX DIESEL PERFORMANCEThe 3.0-liter Duramax is one of the strongest reasons to consider this particular Sierra. Its 495 lb-ft of torque provides substantial pulling power at lower engine speeds, giving the truck a relaxed, capable character when accelerating, climbing grades, or traveling with passengers and equipment.Unlike a traditional gasoline V8 that develops much of its performance at higher engine speeds, the Duramax delivers the kind of low-rpm response that makes a full-size pickup feel composed and effortless in ordinary driving.The 10-speed automatic transmission complements the engine by keeping it within its effective operating range, whether navigating San Antonio traffic or cruising across Texas on Interstate 10.For buyers who regularly travel between Boerne, Austin, Houston, or destinations farther west, the diesel powertrain adds another dimension to the Sierra's appeal. Its combination of torque and efficiency makes it particularly attractive to those who expect to put meaningful highway miles on their truck.AN INTERIOR THAT BELONGS IN THE PREMIUM TRUCK SEGMENTInside, the Sierra AT4 demonstrates how far premium pickups have evolved. The cabin combines durable materials with upscale finishes, including perforated leather seating surfaces, heated and ventilated front seats, and the distinctive interior treatment associated with the AT4 trim.The spacious Crew Cab provides generous room for passengers, making this truck practical for families, business owners, and anyone who frequently travels with colleagues or friends.A large 13.4-inch center touchscreen serves as the primary interface for infotainment, navigation, and vehicle functions, while a 12.3-inch digital driver information display presents essential driving information directly ahead of the driver. Google built-in compatibility, wireless smartphone integration, and modern connectivity features help make the Sierra feel current and intuitive.The technology is particularly useful on longer drives. Navigation, hands-free communication, and easily accessible vehicle information reduce the need to interact with multiple controls, while the elevated seating position provides the commanding view of the road that pickup buyers appreciate.The Sierra AT4 also benefits from GMC's thoughtful approach to everyday utility. Its versatile cargo bed, integrated corner steps, and MultiPro tailgate make loading, unloading, and accessing equipment more convenient. These are features that become increasingly valuable through regular ownership, whether the truck is being used for recreation, work, or household projects.THE VALUE OF LOW MILEAGE AND PREMIUM PRE-OWNED PREPARATIONWith only 16,670 miles, this 2025 Sierra AT4 presents an attractive alternative to purchasing a new premium pickup. Its recent model year, advanced technology, Duramax diesel powertrain, and desirable AT4 equipment give buyers many of the characteristics they would seek in a new truck while offering the potential for meaningful savings.Mileage, however, is only one part of the purchasing decision. The way a vehicle is evaluated and prepared before being offered for sale matters as well.At INFINITI of Boerne, every Premium Pre-Owned vehicle undergoes an inspection performed by experienced INFINITI and ASE Certified Technicians. Each vehicle is evaluated against the dealership's internal reconditioning standards, with necessary recommendations addressed as part of the preparation process.The inspection and reconditioning approach is designed to evaluate important mechanical, functional, and cosmetic aspects of the vehicle. Each Premium Pre-Owned vehicle is also professionally detailed before delivery, reflecting the same attention to presentation that customers expect from a luxury automotive retailer.For a buyer considering a late-model diesel pickup, that professional evaluation is especially valuable. Modern trucks incorporate sophisticated powertrain systems, electronic controls, four-wheel-drive components, and advanced driver-assistance technology. Careful inspection and preparation are important parts of making an informed purchasing decision.Combined with the complimentary Synergy Commitment powertrain protection, this approach adds meaningful value beyond the vehicle's equipment and mileage.A PREMIUM TRUCK FROM AN AWARD-WINNING TEXAS DEALERSHIPINFINITI of Boerne believes the purchasing experience should reflect the quality of the vehicle itself. As the first INFINITI retailer in Texas designated a 2026 J.D. Power Dealer of Excellence, the dealership has earned recognition for its commitment to customer experience.Locally owned and operated, INFINITI of Boerne offers a personalized approach to luxury automotive retailing, supported by a modern facility and a team focused on building long-term customer relationships.Located directly off Interstate 10, just north of San Antonio and minutes from La Cantera and The Rim, the dealership is conveniently positioned for buyers throughout the Texas Hill Country. Its Premium Pre-Owned inventory also attracts customers from Austin, Houston, Corpus Christi, the Rio Grande Valley, Dallas–Fort Worth, and communities across Texas.For customers shopping from outside the area, complete online purchasing and complimentary Texas home delivery make it possible to purchase this Sierra AT4 without making multiple trips to the dealership.A TRUCK BUILT FOR THE WAY TEXANS DRIVEThe 2025 GMC Sierra 1500 AT4 Duramax is particularly appealing because it doesn't ask its owner to choose between capability and refinement. Its turbo-diesel torque, factory off-road equipment, premium interior, modern technology, and four-wheel-drive versatility come together in a truck designed for both demanding tasks and comfortable everyday transportation.With just 16,670 miles, INFINITI of Boerne's Premium Pre-Owned inspection and preparation standards, and the added value of the complimentary Synergy Commitment, this Sierra AT4 offers a compelling combination of equipment, capability, and ownership support.Explore this 2025 GMC Sierra 1500 AT4 at INFINITI of Boerne, schedule a personalized test drive, or arrange your purchase online with complimentary home delivery anywhere in Texas.PackagesAT4 Premium Package: Off-Road High Clearance Step. Technology Package: Multicolor 15" Diagonal Head-Up Display; Bed View Camera; Rear Camera Mirror. Preferred Equipment Group 4SB: Trailer Side Blind Zone Alert; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Theft Deterrent System (unauthorized Entry); Black Chrome Grille Insert Bars; Front Rain-Sensing Wipers; Heavy-Duty Air Filter; Skid Plates; 120-Volt Interior Power Outlet; Heated Driver and Front Outboard Passenger Seating; Wireless Charging; Front Premium Floor Liners with Removable Carpet Insert; Color-Keyed Carpeting Floor Covering; OnStar Services Capable; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Premium Bose 7-Speaker Sound System; Power Rear Windows with Express Down; Integrated Trailer Brake Controller; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Power Rake and Telescoping Steering Column; Keyless Open and Start; Perimeter Lighting; Push Button Start; LED Cargo Area Lighting; Remote Vehicle Starter System; In-Vehicle Trailering System App; Hill Descent Control; 220 Amp Alternator; Floor-Mounted Center Console; Rear Cross Traffic Braking; GMC Pro Safety; Trailering Package; 2 USB Ports; 2 Charge/data USB Ports Inside Center Console; Off-Road Suspension; Steering Wheel Audio Controls; 2 type-C Charge-Only Rear USB Ports; 2-Speed Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; Red Recovery Hooks; SiriusXM with 360L Trial Subscription; Hitch View; Power Front Windows with Driver Express Up/down; Rear Pedestrian Detection; Wi-Fi Hotspot Capable; Rear Wheelhouse Liners; 20" X 9" Machined Aluminum Wheels; Auto-Locking Rear Differential; Power Door Locks. AT4 Preferred Package: Power Sliding Rear Window with Rear Defogger; Universal Home Remote. Off-Road High Clearance Step. Onyx Black. All-Weather Floor Liners with AT4 Logo. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**