Pre-Owned 2026 GMC Sierra 1500 AT4 in St. Louis, MO

Why BUY from Dave Sinclair Buick GMC?When you choose this Onyx Black 2026 GMC Sierra 1500 AT4 with 28,883 miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for Transparent Pricing, Convenience and, most importantly, Customer FIRST Service!No Accidents! One Owner! What this vehicle includes:

AT4 CarbonPro Edition ($1,125 value)

• Carbon Fiber Composite Bed
• CarbonPro Fender Hard Badge
• MultiPro Tailgate Audio System by Kicker

AT4 Premium Package ($1,045 value)

• Off-Road High Clearance Step

Technology Package ($1,525 value)

• Rear Camera Mirror
• Multicolor 15 Diagonal Head-Up Display
• Bed View Camera

Preferred Equipment Group 4SB

• Power Front Passenger Windows with Express Up/down
• Power Rear Windows with Express Down
• Deep-Tinted Glass
• Power Door Locks
• Keyless Open and Start
• Power Front Windows with Driver Express Up/down
• Rear Wheelhouse Liners
• Color-Keyed Carpeting Floor Covering
• Front Premium Floor Liners with Removable Carpet Insert
• Push Button Start
• Remote Vehicle Starter System
• Electric Rear-Window Defogger
• Front Rain-Sensing Wipers
• Spray-On Pickup Bedliner with GMC Logo
• Floor-Mounted Center Console
• Auto-Locking Rear Differential
• Black Chrome Grille Insert Bars
• Hill Descent Control
• Integrated Trailer Brake Controller
• Heavy-Duty Air Filter
• Wireless Charging
• Heated Driver and Front Outboard Passenger Seating
• Heated 2nd Row Outboard Seats
• 120-Volt Interior Power Outlet
• Ventilated Driver and Front Passenger Seats
• 220 Amp Alternator
• Power Rake and Telescoping Steering Column
• 2-Speed Transfer Case
• 20 X 9 Machined Aluminum Wheels
• Skid Plates
• GMC Pro Safety
• Hitch View
• Trailer Camera Provisions
• Perimeter Lighting
• SiriusXM with 360L Trial Subscription
• 2 Charge/data USB Ports Inside Center Console
• 2 USB Ports
• 2 type-C Charge-Only Rear USB Ports
• Ultrasonic Front and Rear Park Assist
• OnStar Services Capable
• In-Vehicle Trailering System App
• LED Cargo Area Lighting
• Rear Cross Traffic Braking
• Red Recovery Hooks
• Steering Wheel Audio Controls
• Rear Pedestrian Detection
• Trailer Side Blind Zone Alert
• Premium Bose 7-Speaker Sound System
• Theft Deterrent System (unauthorized Entry)
• HD Surround Vision
• Wi-Fi Hotspot Capable
• Off-Road Suspension
• Trailering Package

AT4 Preferred Package

• Power Sliding Rear Window with Rear Defogger
• Universal Home Remote

Safety and Security

• The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision.
• The vehicle constantly monitors the roadway in front of the vehicle and identifies and tracks pedestrians on an interior display. If the system determines a likely impact, it will automatically take preventative steps to avoid hitting the pedestrian.
• The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.

Technology and Telematics

• Apple CarPlay/Android Auto smart device wireless mirroring
• Mobile devices can wirelessly connect to the internet through the vehicle’s private mobile network.

EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6, TRANSMISSION, 10-SPEED AUTOMATIC WITH ELECTRONIC PRECISION SHIFT, ELECTRONICALLY CONTROLLED, GVWR, 7200 LBS. (3266 KG), REAR AXLE, 3.23 RATIO, WHEELS, 20 X 9 (50.8 CM X 22.9 CM) MACHINED ALUMINUM, TIRES, 275/60R20SL ALL-TERRAIN, BLACKWALL, TIRE, SPARE 255/80R17SL ALL-SEASON, BLACKWALL, ONYX BLACK, SEATS, FRONT BUCKET, JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHER FRONT SEAT TRIM, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE, INCLUDES COLOR TOUCH-SCREEN, MULTI-TOUCH DISPLAY, AM/FM STEREO, AT4 PREMIUM PACKAGE, TECHNOLOGY PACKAGE, AT4 CARBONPRO EDITION, AT4 PREFERRED PACKAGE, ENGINE BLOCK HEATER, CARBON FIBER COMPOSITE BED, SUNROOF, POWER, LPO, OFF-ROAD HIGH CLEARANCE STEPS, WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER, LICENSE PLATE KIT, FRONT, LPO, MULTIPRO TAILGATE AUDIO SYSTEM BY KICKER, MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY, UNIVERSAL HOME REMOTE, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING, BED VIEW CAMERA Come on in to Dave Sinclair Buick GMC today at 5655 South Lindbergh Blvd St Louis MO 63123 or call (314) 272-4060 to schedule a test drive!

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• ADAPTIVE CRUISE CONTROL
• Air conditioning dual-zone automatic climate control
• Air filter heavy-duty
• Air vents rear
• Airbags dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner’s Manual for more information.)
• Alternator 220 amps (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)
• Assist handles front A-pillar mounted for driver and passenger rear B-pillar mounted
• Auto-locking rear differential
• Automatic Stop/Start
• Battery heavy-duty 850 cold-cranking amps/95 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)
• Brake lining wear indicator
• Brakes 4-wheel antilock 4-wheel disc with DURALIFE rotors
• Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) GMC Pro Safety.)
• Bumper front body-color lower
• Bumper rear body-color with corner steps
• Capless Fuel Fill
• Cargo tie downs (12) fixed
• Center Console floor-mounted with cup holders cell phone storage power cord management hanging file folder capability
• Compass located in instrument cluster
• CornerStep rear bumper
• Door handles body-color
• Driver Information Center enhanced 12.3" diagonal reconfigurable multicolor digital display
• Engine Duramax 3.0L Turbo-Diesel I6 (305 hp [227 kW] @ 3750 rpm 495 lb-ft of torque [671 Nm] @ 2750 rpm) (Includes (KW5) 220-amp alternator and (K05) engine block heater.)
• Exh

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