
2026 GMC Sierra 1500
Mileage: 4 · Castle Rock, CO
2026 GMC Sierra 1500 AT4X Crew Cab 4WD
Castle Rock, CO
$74,526
MSRP
$84,375
Dealer rating
Request information
Features
Mileage
4
Drivetrain
Four-Wheel Drive
Exterior color
Onyx Black
Interior color
Black (Obsidian Rush)
MPG
19 MPG
Engine
3L I6 Diesel
Fuel type
Diesel
Transmission
Automatic
Finance in advance
Overview
- Make:GMC
- Model:Sierra 1500
- Year:2026
- Trim:AT4X
- Body type:Pickup Truck
- Exterior color:Onyx Black
- Interior color:Black (Obsidian Rush)
- Mileage:4 mi
- Condition:New
- VIN:3GTUUFE86TG112275
- Stock number:TG112275
Fuel economy
- Fuel tank size:24 gal
- Combined gas mileage:19 MPG
- City gas mileage:19 MPG
- Highway gas mileage:20 MPG
- Fuel type:Diesel
Performance
- Transmission:Automatic
- Drivetrain:Four-Wheel Drive
- Engine:3L I6 Diesel
Safety
- ABS Brakes
- Blind Spot Monitoring
- Curtain Airbags
- Driver Airbag
- Front Side Airbags
- Parking Sensors
- Passenger Airbag
Measurements
- Doors:4 doors
- Front legroom:44 in
- Back legroom:43 in
- Cabin size:Crew Cab
- Cargo volume:69 in
Options
Onyx Black
History
Clean title
No issues reported.
0 accidents reported
No accidents or damage reported.
Pricing
- Selling slowlyOn the market longer than average. There may be flexibility on price.
- Price decreasedPrice went down by $8,849.
Dealer

Dealer reviews
Dealer's description
Introducing the 2026 GMC Sierra 1500 AT4X - a rugged and capable full-size pickup that's ready to take on any adventure. This exceptional vehicle boasts a host of premium features that will elevate your driving experience to new heights. Meticulously equipped, this Sierra 1500 AT4X comes equipped with a commanding 3.0L I6 engine paired with a smooth-shifting 10-speed automatic transmission and robust 4WD system. Offering impressive fuel efficiency with 19 city/20 highway MPG, this truck is as practical as it is powerful. - Rocker Protection (LPO) - Rear Underseat Storage (LPO) - Sport Pedal Cover Kit (LPO) - Engine Block Heater - Preferred Equipment Group 4SG - Trailering Package But the real standout features are the ones that will truly enhance your daily driving and weekend adventures. Enjoy the convenience of the Navigation System, the premium sound of the Bose Premium Series with 12-Speaker System, and the versatility of the MultiPro Tailgate Audio System by Kicker. Stay connected with SiriusXM and the Wi-Fi Hotspot, and keep your devices charged with the wireless charging and multiple USB ports. For added comfort and convenience, this Sierra 1500 AT4X offers a power sunroof, heated and ventilated front seats, heated rear seats, and a heated steering wheel. The Multicolor 15" Diagonal Head-Up Display and Ultrasonic Front & Rear Park Assist make navigating with ease, while the Trailer Camera Provisions, Integrated Trailer Brake Controller, and In-Vehicle Trailering System App provide seamless towing capabilities. Safety is also a top priority, with features like Automatic Emergency Braking, Lane Keep Assist with Lane Departure Warning, and Rear Pedestrian Detection keeping you and your loved ones protected on the road. Wrapped in a bold Onyx Black exterior with premium Gloss Black and Dark Nickel accents, this Sierra 1500 AT4X exudes a commanding presence that is sure to turn heads. Step inside the spacious Crew Cab to discover the luxurious Full Grain Leather Seat Trim and the thoughtful attention to detail that sets this truck apart. Experience the uncompromising capability, premium features, and exceptional style of the 2026 GMC Sierra 1500 AT4X. Visit our showroom today and let us demonstrate how this remarkable truck can elevate your driving experience. Price includes: $1750 - Buick & GMC Consumer Cash Program. Exp. 04/30/2026 $2500 - GM Trade In Allowance Program. Exp. 04/30/2026 $500 - Buick GMC Bonus Cash. Exp. 04/30/2026 $500 - GM Military Cash Allowance Program. Exp. 01/04/2027
Additional Information
Navigation System,Preferred Equipment Group 4SG,Trailering Package,12 Speakers,AM/FM radio: SiriusXM with 360L,Bose Premium Series w/12-Speaker System,MultiPro Tailgate Audio System by Kicker (LPO),Radio data system,Radio: Premium GMC Infotainment Audio System,SiriusXM w/360L Trial Subscription,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,120-Volt Bed Mounted Power Outlet,120-Volt Interior Power Outlet,Driver Memory,Heads-Up Display,Memory seat,Power driver seat,Power Front Passenger Windows w/Express Up/Down,Power Front Windows w/Driver Express Up/Down,Power Rear Windows w/Express Down,Power steering,Power windows,Push Button Start,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Universal Home Remote,Off-Road Suspension,Power Rake & Telescoping Steering Column,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Emergency communication system: OnStar,Front anti-roll bar,Front wheel independent suspension,Keyless Open & Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Door Locks,Power moonroof,Power Sunroof,Brake assist,Electronic Stability Control,Hill Descent Control,Auto High-beam Headlights,Delay-off headlights,Front fog lights,Fully automatic headlights,Perimeter Lighting,Panic alarm,Security system,Theft Deterrent System (Unauthorized Entry),Speed control,Driver-Selectable Full-Locking Front Differential,Driver-Selectable Full-Locking Rear Differential,220 Amp Alternator,Block heater,Engine Block Heater,Heavy-Duty Air Filter,Auto-dimming door mirrors,Front License Plate Kit,Gloss Black Header w/Drk Nickel Grille Insert Bars,Heated door mirrors,IntelliBeam Automatic High Beam On/Off,LED Cargo Area Lighting,Power door mirrors,Rear step bumper,Rear Wheelhouse Liners,Rocker Protection (LPO),Spray-On Pickup Bedliner w/GMC Logo,2 Charge/Data USB Ports Inside Center Console,2 Type-C Charge-Only Rear USB Ports,2 USB Ports,Apple CarPlay/Android Auto,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera,Buckle to Drive,Color-Keyed Carpeting Floor Covering,Compass,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Following Distance Indicator,Forward Collision Alert,Front Pedestrian Braking,Front Prem Floor Liners w/Removable Carpet Insert,Front reading lights,Garage door transmitter,Genuine wood dashboard insert,Genuine wood door panel insert,HD Surround Vision,Heated steering wheel,Illuminated entry,Lane Keep Assist w/Lane Departure Warning,Leather steering wheel,Multicolor 15" Diagonal Head-Up Display,OnStar Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Cross Traffic Braking,Rear Pedestrian Detection,Rear Prem Floor Liners w/Removable Carpet Insert,Rear reading lights,Rear seat center armrest,Rear Underseat Storage (LPO),Safety Alert Seat,Sport Pedal Cover Kit (LPO),Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Camera Provisions,Trailer Side Blind Zone Alert,Trip computer,Ultrasonic Front & Rear Park Assist,Voltmeter,Wi-Fi Hotspot Capable,Wireless Apple CarPlay/Wireless Android Auto,Wireless Charging,16-Way Power Driver Seat Adjuster w/Lumbar,16-Way Power Passenger Seat Adjuster w/Lumbar,Front Bucket Seats,Front Center Armrest,Full Grain Leather Seat Trim,Heated 2nd Row Outboard Seats,Heated Driver & Front Outboard Passenger Seating,Heated front seats,Heated rear seats,Power passenger seat,Split folding rear seat,Ventilated Driver & Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance,Hitch View,In-Vehicle Trailering System App,Integrated Trailer Brake Controller,Trailer Tire Pressure Monitor System,Alloy wheels,Wheels: 18" x 8.5" Painted Aluminum,Deep-Tinted Glass,Front Rain-Sensing Wipers,Power Sliding Rear Window w/Rear Defogger,Rain sensing wipers,Variably intermittent wipers,3.23 Rear Axle Ratio
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* Fuel economy figures shown are provided from EPA mileage estimates and may not be comparable across different model years. Actual mileage will vary, depending on specific options selected, vehicle maintenance and your driving habits
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