2026 GMC Sierra 1500 AT4 Crew Cab 4WD

2026 GMC Sierra 1500 AT4 Duramax Diesel | Premium Off-Road Luxury This is not your average truckthis 2026 GMC Sierra 1500 AT4 is built for those who demand power, capability, and refinement in one aggressive package. Finished in Onyx Black with a bold stance and off-road-ready design, this Sierra delivers both presence and performance. At the heart of this truck is the highly sought-after 3.0L Duramax Turbo-Diesel , paired with a smooth 10-speed automatic transmission , giving you exceptional torque, fuel efficiency, and long-haul reliability. Whether you're towing, commuting, or heading off-road, this truck is ready. Inside, the cabin blends rugged capability with upscale comfort, featuring Jet Black leather with Kalahari accents , heated and ventilated seats, and a driver-focused layout built around advanced technology. Performance & Capability 3.0L Duramax Turbo-Diesel engine 10-speed automatic transmission 4WD with 2-speed Autotrac transfer case Off-road suspension with 2 factory lift Skid plates & hill descent control Trailer brake controller & trailering package All-terrain tires with locking rear differential Technology & Connectivity Massive 13.4 touchscreen with Google built-in Wireless Apple CarPlay & Android Auto 12.3 digital driver display Bose premium sound system Adaptive cruise control Head-Up Display & Rear Camera Mirror (Technology Package) Bed view camera for towing & cargo visibility Interior Comfort Perforated leather seating Heated & ventilated front seats + heated rear seats Dual-zone climate control Heated steering wheel Power-adjustable seats with memory Power sunroof Exterior Features GMC MultiPro Tailgate Spray-on bedliner LED cargo lighting & fog lamps Dual exhaust with premium tips High-clearance off-road steps Power folding/heated mirrors Packages & Upgrades AT4 Premium Package AT4 Preferred Package Technology Package Power Sunroof Body-color wheel arch moldings This Sierra AT4 delivers the perfect blend of diesel efficiency, off-road capability, and luxury comfort making it one of the most versatile trucks on the road today. VIN: 3GTUUEE87TG180031 MSRP: $74,450 Available now at Legacy Buick GMC Westbank this one wont sit long.

Additional Information

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 Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones|Steering wheel audio controls|Bose Sound System, premium 7-speaker system with Richbass woofer|Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)|Bluetooth for phone, connectivity to vehicle infotainment system|Wireless, Apple CarPlay / Wireless Android Auto|Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door|Wipers, front rain-sensing|Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animation|Bedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Deleted with (PCP) AT4 CarbonPro Edition. Crew Cab models are available with Ship Thru codes (VCO), (VDT), (VYC) or (VYS).)|Wheel, 17 x 8 (43.2 cm x 20.3 cm) full-size, steel spare|Headlamps, LED projectors with Fade-on/Fade-off animation, LED turn signals and Daytime Running Lamps|Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory|Lighting, perimeter|Tire, spare 255/80R17SL all-season, blackwall (Included and only available with 20 or 22 wheels and tires excluding (QFV) LT265/60R20 MT blackwall Goodyear Wrangler Territory tires.)|Bumper, front, body-color lower|Tires, 275/60R20SL all-terrain, blackwall|Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel|CornerStep, rear bumper|Grille (Black chrome grille insert bars with gloss black header and accents.)|Glass, deep-tinted|Tailgate, GMC MultiPro Tailgate with six functional load/access features|Bumper, rear body-color with corner steps|IntelliBeam, automatic high beam on/off (Included and only available with (PDI) GMC Pro Safety.)|Tailgate and bed rail protection caps, top|LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob|Wheelhouse liners, rear (Deleted with (PCP) AT4 CarbonPro Edition.)|Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light|Door handles, body-color|Fog lamps, LED|Wheels, 20 x 9 (50.8 cm x 22.9 cm) machined aluminum with Carbon Grey Metallic accents|Mirror caps, high gloss Black|Driver memory recalls driver presets for power driver seat and outside mirrors|Mirror, inside rearview auto-dimming|Theft-deterrent system, unauthorized entry|Steering column, power rake and telescoping|Windows, power rear, express down|Steering wheel, heated|USB Ports, 2 (first row) located on console|Wireless Charging|Air conditioning, dual-zone automatic climate control|Keyless Open and Start includes remote keyless entry|Premium Floor Liners with removable carpet insert, front|Door locks, power|Compass, located in instrument cluster|Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet)|Seating, heated driver and front outboard passenger|Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted|Adaptive Cruise Control|GMC Premium information Display- 13.4 diagonal Multicolor touch screen|Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)|In-Vehicle Trailering App System, includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module|Seat trim, Perforated leather front|Seat adjuster, passenger 10-way power including lumbar|USB Ports, 2, Charge/Data ports located inside center console|Driver Information Center, enhanced, 12.3 diagonal reconfigurable multicolor digital display|Seats, ventilated driver and front passenger|Steering wheel, wrapped|Steering column lock, electrical|Exterior Temperature Display, located in radio display|Seats, heated second row outboard seats|Seat adjuster, driver 10-way power including lumbar|Floor covering, color-keyed carpeting|Remote vehicle starter system|USB ports, (2) charge-only, rear|Defogger, rear-window electric|Seats, front bucket with center console|Window, power front, passenger express up/down|Premium Floor Liners with removable carpet insert, rear|Air vents, rear|Power outlet, interior power outlet, 120-volt (400 watts shared with (KC9) bed mounted power outlet)|Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability|Windows, power front, drivers express up/down|Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors|Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)|Auto-locking rear differential|Transmission, 10-speed automatic with Electronic Precision shift, electronically controlled with overdrive, tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade Braking (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)|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.)|Skid Plates|Exhaust, dual system (Includes chrome exhaust tips. Not available with (L87) 6.2L EcoTec3 V8 engine.)|Suspension, Off-Road with 2 factory installed lift and monotube shocks|Electronic Precision Shift and steering column paddle shifters|Hill Descent Control|Steering, Electric Power Steering (EPS) assist, rack-and-pinion|Recovery hooks, Red|Automatic Stop/Start|Push Button Start|Frame, fully-boxed, hydroformed front section|Rear axle, 3.23 ratio|Brake lining wear indicator|GVWR, 7200 lbs. (3266 kg) (Requires TK10*43 Crew Cab 4WD model with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)|Alternator, 220 amps (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)|Pickup bed|Capless Fuel Fill|Exhaust, aluminized stainless-steel muffler and tailpipe|Trailer brake controller, integrated|Air filter, heavy-duty|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.)|Cargo tie downs (12), fixed|Four wheel drive|Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance|GMC Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UHX) Lane Keep Assist with Lane Departure Warning, and (UHY) Automatic Emergency Braking (Includes (T8Z) Buckle to Drive and (HS1) Safety Alert Seat.)|Front and Rear Park Assist, ultrasonic|StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist|Rear Pedestrian Alert|Trailer Side Blind Zone Alert|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.)|Rear Seat Belt Indicator|Hitch Guidance|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.)|HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer.|OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)|Lane Keep Assist with Lane Departure Warning (Included and only available with (PDI) GMC Pro Safety.)|Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)|Safety Alert Seat (Included and only available with (PDI) GMC Pro Safety.)|Rear Cross Traffic Braking|Forward Collision Alert (Included and only available with (PDI) GMC Pro Safety.)|Trailer Camera Provisions and trailer viewing software|Seat Belt Adjustable Guide Loops, front row only|Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)|Front Pedestrian Braking (Included and only available with (PDI) GMC Pro Safety.)|OnStar services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)|Daytime Running Lamps, LED signature lighting|Hitch View with image adjustment, Pan/Zoom/Tilt|Automatic Emergency Braking (Included and only available with (PDI) GMC Pro Safety.)|Rear Seat Reminder