2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
ONYX BLACK
4WD
Diesel
0 Miles
Jet Black w/Kalahari Accents
G7305
1GT4UVEY2TF161890
3500
Leather
AT4
About This 2026 GMC Sierra
Vehicle Details
Discover the powerhouse 2026 GMC Sierra 3500 AT4 4WD, now available in Casper, WY - a rugged yet refined heavy-duty pickup built for work, adventure, and everything in between. Under the hood sits a muscular V8 6.6L Diesel delivering class-leading torque and towing capability, paired with a durable 4WD system that conquers Wyoming trails, construction sites, and long-haul trips with confidence. Inside, premium Leather Seats provide comfort for long drives while the BOSE Stereo and XM Radio transform the cabin into a first-class listening environment. Advanced safety and convenience features include Adaptive Cruise Control for relaxed highway driving and Lane Departure Warning to help keep you centered and secure. The AT4 trim combines purpose-driven off-road equipment with upscale touches, giving you aggressive capability without sacrificing on-road refinement. This GMC Sierra 3500 AT4 is engineered to tow heavier loads, haul larger payloads, and maintain composure under pressure - ideal for contractors, ranchers, and towing enthusiasts who demand both strength and sophistication. With modern technology, a commanding diesel V8 powertrain, and robust 4WD readiness, this truck stands ready for Wyoming's rugged landscapes and daily demands. Located in Casper, WY, this GMC Sierra 3500 AT4 is prepared for immediate inspection and test drives. Experience diesel performance, premium comfort, and advanced safety features in one formidable package - schedule your appointment today and feel the difference behind the wheel.
Equipment
The leather seats in this model are a must for buyers looking for comfort, durability, and style. The steering wheel audio controls on it keep the volume and station within easy reach. This unit's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving the vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from. This 1 ton pickup has auto-adjust speed for safe following. An off-road package is equipped on it. Start this vehicle from inside with remote start. Protect the vehicle from unwanted accidents with a cutting edge backup camera system. This unit features a high end BOSE stereo system. Keep your hands warm all winter with a heated steering wheel in this GMC Sierra . This 2026 GMC Sierra 3500 has a V8, 6.6L high output engine.
Packages
AT4 Premium Plus Package: Power Sunroof. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Windows with Passenger Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Gloss Black Header and Grille Insert Bars; Rear Wheelhouse Liners. Technology Package: Multicolor 15" Diagonal Head-Up Display; Auto-Dimming Inside Rearview Mirror with Camera. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Black Power-Retractable Assist Steps. Power Sunroof. Gooseneck/5th Wheel Prep Package. Onyx Black. All-Weather Floor Liners with AT4 Logo. LED Smoked Amber Roof Marker Lamps. **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.**
Discover the powerhouse 2026 GMC Sierra 3500 AT4 4WD, now available in Casper, WY - a rugged yet refined heavy-duty pickup built for work, adventure, and everything in between. Under the hood sits a muscular V8 6.6L Diesel delivering class-leading torque and towing capability, paired with a durable 4WD system that conquers Wyoming trails, construction sites, and long-haul trips with confidence. Inside, premium Leather Seats provide comfort for long drives while the BOSE Stereo and XM Radio transform the cabin into a first-class listening environment. Advanced safety and convenience features include Adaptive Cruise Control for relaxed highway driving and Lane Departure Warning to help keep you centered and secure. The AT4 trim combines purpose-driven off-road equipment with upscale touches, giving you aggressive capability without sacrificing on-road refinement. This GMC Sierra 3500 AT4 is engineered to tow heavier loads, haul larger payloads, and maintain composure under pressure - ideal for contractors, ranchers, and towing enthusiasts who demand both strength and sophistication. With modern technology, a commanding diesel V8 powertrain, and robust 4WD readiness, this truck stands ready for Wyoming's rugged landscapes and daily demands. Located in Casper, WY, this GMC Sierra 3500 AT4 is prepared for immediate inspection and test drives. Experience diesel performance, premium comfort, and advanced safety features in one formidable package - schedule your appointment today and feel the difference behind the wheel.
Equipment
The leather seats in this model are a must for buyers looking for comfort, durability, and style. The steering wheel audio controls on it keep the volume and station within easy reach. This unit's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving the vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from. This 1 ton pickup has auto-adjust speed for safe following. An off-road package is equipped on it. Start this vehicle from inside with remote start. Protect the vehicle from unwanted accidents with a cutting edge backup camera system. This unit features a high end BOSE stereo system. Keep your hands warm all winter with a heated steering wheel in this GMC Sierra . This 2026 GMC Sierra 3500 has a V8, 6.6L high output engine.
Packages
AT4 Premium Plus Package: Power Sunroof. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Windows with Passenger Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Gloss Black Header and Grille Insert Bars; Rear Wheelhouse Liners. Technology Package: Multicolor 15" Diagonal Head-Up Display; Auto-Dimming Inside Rearview Mirror with Camera. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Black Power-Retractable Assist Steps. Power Sunroof. Gooseneck/5th Wheel Prep Package. Onyx Black. All-Weather Floor Liners with AT4 Logo. LED Smoked Amber Roof Marker Lamps. **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.**
Features & Options
- AT4 Premium Plus Package: Power Sunroof
- Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Windows with Passenger Express Up/down; Bose Premium 7-Speaker Sound System; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel/telescoping Steering Column; Keyless Open and Start; ProGrade Trailering System; Push Button Start; Gloss Black Header and Grille Insert Bars; Rear Wheelhouse Liners
- Technology Package: Multicolor 15" Diagonal Head-Up Display; Auto-Dimming Inside Rearview Mirror with Camera
- AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote
- Black Power-Retractable Assist Steps
- Power Sunroof
- Gooseneck/5th Wheel Prep Package
- Onyx Black
- All-Weather Floor Liners with AT4 Logo
- LED Smoked Amber Roof Marker Lamps
- Forward collision mitigation with pedestrian impact prevention
- Pedestrian impact prevention
- Mobile hotspot internet access
- Rear mounted camera
- Adaptive cruise control
- Head-up display
- Automatic Emergency Braking predictive brake assist system
- Cruise control with steering wheel mounted controls
- Ventilated driver and front passenger seats
- Keyfob remote start
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Primary monitor touchscreen
- Lane departure warning
- Rear collision warning
- First-row sliding and tilting glass sunroof with express open/close activation sunshade
- Driver seat power reclining
- lumbar support
- cushion tilt
- fore/aft control and height adjustable control
- AutoTrac part and full-time 4WD
- Duramax 6.6L V-8 diesel direct injection
- intercooled turbo
- diesel
- engine with 470HP
- Duramax 6.6L V-8
- Front wireless smart device charging
- Built-in virtual assistant
- Teen Driver restricted driving mode/alerts
- Keyless Open/Keyless Start with hands-free access and push button start
- Keyfob window control
- Aerial view camera
- Smart device remote start
- Push-button
- Weight capacity alert
- Video-feed rearview mirror
- Wireless audio streaming
- Hitch Guidance with Hitch View vehicle to trailer hitching assist
- Gauge cluster display size: 12.30
- Front mounted camera with washer
- Right side camera
- Pickup box camera
- Left side camera
- Blind spot warning
- Following distance alert
- Trailer tire pressure sensors
- Trailer light test
- Trailer light malfunction warning
- Trailer theft alarm
- Dual-zone front climate control
- Full gauge cluster screen
- Auto high-beam headlights
- Immobilizer
- Bose speakers
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