2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
Onyx Black
4WD
Diesel
0 Miles
Jet Black w/Kalahari Accents
G7192
1GT4UVEY3TF138358
3500
Leather
AT4
About This 2026 GMC Sierra
Vehicle Details
2026 GMC Sierra 3500 AT4 4WD — V8 6.6L Diesel, Casper WY, Best Price Power meets refinement in this 2026 GMC Sierra 3500 AT4, equipped with a rugged V8 6.6L Diesel and true 4WD capability. Built for heavy towing and serious off-road adventures, the GMC Sierra 3500 AT4 delivers diesel torque, exceptional hauling confidence, and trail-ready suspension without sacrificing comfort. Located in Casper, WY, this GMC Sierra is priced to sell — the best price available for this spec in the region. Premium interior features include leather seats and a heated steering wheel for cold Wyoming mornings, plus steering wheel audio controls for convenient, safe media management. Advanced driver-assist systems such as Adaptive Cruise Control enhance long-distance highway driving and towing stability. The Off-Road Package outfits this AT4 with upgraded skid plates, off-road tuned shocks, and aggressive tires to conquer rugged terrain. This GMC Sierra 3500 AT4 is ideal for ranchers, contractors, and outdoor enthusiasts seeking diesel durability, capability, and luxury. With best-price availability in Casper, WY, financing options and immediate test drives are offered. Whether hauling heavy loads, navigating rough trails, or commuting in style, this GMC Sierra 3500 AT4 provides unmatched performance and value. Contact us today to schedule a test drive and lock in the best price on this high-performance diesel truck.
Equipment
The vehicle has auto-adjust speed for safe following. Protect this 2026 GMC Sierra 3500 from unwanted accidents with a cutting edge backup camera system. An off-road package is installed on this vehicle so you are ready for your four-wheeling best. Never get into a cold vehicle again with the remote start feature on this 2026 GMC Sierra 3500. The leather seats in this 2026 GMC Sierra 3500 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 1 ton pickup's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Keep your hands warm all winter with a heated steering wheel in the vehicle . The vehicle features a high end BOSE stereo system. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from.
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 Badging Package: Black Sierra Nameplates; Black GMC Emblems. Black Power-Retractable Assist Steps. Power Sunroof. Gooseneck/5th Wheel Prep Package. Onyx Black. Hitch Package. Sport Pedal Cover Kit. 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.**
2026 GMC Sierra 3500 AT4 4WD — V8 6.6L Diesel, Casper WY, Best Price Power meets refinement in this 2026 GMC Sierra 3500 AT4, equipped with a rugged V8 6.6L Diesel and true 4WD capability. Built for heavy towing and serious off-road adventures, the GMC Sierra 3500 AT4 delivers diesel torque, exceptional hauling confidence, and trail-ready suspension without sacrificing comfort. Located in Casper, WY, this GMC Sierra is priced to sell — the best price available for this spec in the region. Premium interior features include leather seats and a heated steering wheel for cold Wyoming mornings, plus steering wheel audio controls for convenient, safe media management. Advanced driver-assist systems such as Adaptive Cruise Control enhance long-distance highway driving and towing stability. The Off-Road Package outfits this AT4 with upgraded skid plates, off-road tuned shocks, and aggressive tires to conquer rugged terrain. This GMC Sierra 3500 AT4 is ideal for ranchers, contractors, and outdoor enthusiasts seeking diesel durability, capability, and luxury. With best-price availability in Casper, WY, financing options and immediate test drives are offered. Whether hauling heavy loads, navigating rough trails, or commuting in style, this GMC Sierra 3500 AT4 provides unmatched performance and value. Contact us today to schedule a test drive and lock in the best price on this high-performance diesel truck.
Equipment
The vehicle has auto-adjust speed for safe following. Protect this 2026 GMC Sierra 3500 from unwanted accidents with a cutting edge backup camera system. An off-road package is installed on this vehicle so you are ready for your four-wheeling best. Never get into a cold vehicle again with the remote start feature on this 2026 GMC Sierra 3500. The leather seats in this 2026 GMC Sierra 3500 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 1 ton pickup's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Keep your hands warm all winter with a heated steering wheel in the vehicle . The vehicle features a high end BOSE stereo system. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this vehicle. Anywhere on the planet, you will have hundreds of digital stations to choose from.
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 Badging Package: Black Sierra Nameplates; Black GMC Emblems. Black Power-Retractable Assist Steps. Power Sunroof. Gooseneck/5th Wheel Prep Package. Onyx Black. Hitch Package. Sport Pedal Cover Kit. 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 Badging Package: Black Sierra Nameplates; Black GMC Emblems
- Black Power-Retractable Assist Steps
- Power Sunroof
- Gooseneck/5th Wheel Prep Package
- Onyx Black
- Hitch Package
- Sport Pedal Cover Kit
- 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
- GMC ProGrade Trailering System 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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