2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
Onyx Black
4WD
Diesel
0 Miles
Jet Black w/Kalahari Accents
260550
1GT4UVEY7TF280602
3500
Leather
AT4
Estimated Payment
$0 / month
About This 2026 GMC Sierra
Vehicle Details
Discover rugged capability and refined comfort with this 2026 GMC Sierra 3500 AT4 4WD, now available in Stephenville, TX. Powered by a potent V8 6.6L Duramax diesel, this heavy-duty pickup is engineered for towing, hauling, and tackling demanding jobs with confidence. The AT4 trim blends off-road prowess with upscale appointments, highlighted by a dedicated Off-Road Package that includes enhanced suspension, skid protection, and terrain-optimized features to help you conquer rough trails and remote work sites. Inside, premium materials and thoughtful technology create a commanding yet comfortable cabin. Enjoy crystal-clear audio via the BOSE stereo system and the convenience of Remote Start for effortless climate control before you step inside. Stay secure and aware with an integrated Back-Up Camera that simplifies maneuvering and hitching heavy loads. The Heated Steering Wheel adds extra comfort during cooler mornings on the job or weekend outings. This GMC Sierra 3500 AT4 is tailored for drivers who demand strength and sophistication from a heavy-duty truck. With robust towing capacity, off-road-ready hardware, and a suite of convenience and safety technologies, it's ready for both professional work and weekend adventures. Visit Stephenville, TX to experience the capability and comfort of this exceptional 2026 GMC Sierra 3500 AT4 in person.
Equipment
This GMC Sierra features steering wheel audio controls. Engulf yourself with the crystal clear sound of a BOSE sound system in the GMC Sierra. This unit has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. This 1 ton pickup's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. It is pure luxury with a heated steering wheel. Never get into a cold vehicle again with the remote start feature on the vehicle. See what's behind you with the back up camera on the vehicle. An off-road package is installed on the GMC Sierra so you are ready for your four-wheeling best. The leather seats in this model are a must for buyers looking for comfort, durability, and style. The GMC Sierra is equipped with the latest generation of XM/Sirius Radio. The GMC Sierra 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 Badging Package: Black Sierra Nameplates; Black GMC Emblems. Black Power-Retractable Assist Steps. Power Sunroof. Body Color Wheel Arch Moldings. Gooseneck/5th Wheel Prep Package. Onyx Black. Hitch Package. LT275/65R20E 126/123 Off-Road T/A KO3 Tires. 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 rugged capability and refined comfort with this 2026 GMC Sierra 3500 AT4 4WD, now available in Stephenville, TX. Powered by a potent V8 6.6L Duramax diesel, this heavy-duty pickup is engineered for towing, hauling, and tackling demanding jobs with confidence. The AT4 trim blends off-road prowess with upscale appointments, highlighted by a dedicated Off-Road Package that includes enhanced suspension, skid protection, and terrain-optimized features to help you conquer rough trails and remote work sites. Inside, premium materials and thoughtful technology create a commanding yet comfortable cabin. Enjoy crystal-clear audio via the BOSE stereo system and the convenience of Remote Start for effortless climate control before you step inside. Stay secure and aware with an integrated Back-Up Camera that simplifies maneuvering and hitching heavy loads. The Heated Steering Wheel adds extra comfort during cooler mornings on the job or weekend outings. This GMC Sierra 3500 AT4 is tailored for drivers who demand strength and sophistication from a heavy-duty truck. With robust towing capacity, off-road-ready hardware, and a suite of convenience and safety technologies, it's ready for both professional work and weekend adventures. Visit Stephenville, TX to experience the capability and comfort of this exceptional 2026 GMC Sierra 3500 AT4 in person.
Equipment
This GMC Sierra features steering wheel audio controls. Engulf yourself with the crystal clear sound of a BOSE sound system in the GMC Sierra. This unit has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. This 1 ton pickup's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. It is pure luxury with a heated steering wheel. Never get into a cold vehicle again with the remote start feature on the vehicle. See what's behind you with the back up camera on the vehicle. An off-road package is installed on the GMC Sierra so you are ready for your four-wheeling best. The leather seats in this model are a must for buyers looking for comfort, durability, and style. The GMC Sierra is equipped with the latest generation of XM/Sirius Radio. The GMC Sierra 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 Badging Package: Black Sierra Nameplates; Black GMC Emblems. Black Power-Retractable Assist Steps. Power Sunroof. Body Color Wheel Arch Moldings. Gooseneck/5th Wheel Prep Package. Onyx Black. Hitch Package. LT275/65R20E 126/123 Off-Road T/A KO3 Tires. 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
- Body Color Wheel Arch Moldings
- Gooseneck/5th Wheel Prep Package
- Onyx Black
- Hitch Package
- LT275/65R20E 126/123 Off-Road T/A KO3 Tires
- 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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