2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
COASTAL DUNE
4WD
Diesel
1 Miles
Jet Black w/Kalahari Accents
826150
1GT4UPEY9TF268205
2500
Leather
AT4
Estimated Payment
$0 / month
About This 2026 GMC Sierra
Vehicle Details
Conquer tough jobs and weekend adventures with this 2026 GMC Sierra 2500 AT4, a rugged 4WD powerhouse featuring a V8 6.6L Duramax diesel. Located in Rockford, IL, this GMC Sierra AT4 blends capability and comfort for drivers who demand performance and refinement. Built for off-road confidence, the included Off-Road Package enhances suspension and traction for rocky trails and challenging terrain. The AT4's stout diesel V8 delivers class-leading towing and hauling capability, while heavy-duty construction ensures long-lasting reliability for work and play. Inside, premium touches elevate every drive. Enjoy crystal-clear sound from the BOSE stereo system and seamless smartphone connectivity with Android Auto for navigation and hands-free control. Advanced safety features help keep you protected on Illinois roads: Cross-Traffic Alert warns of approaching vehicles when reversing, and the Back-Up Camera provides a clear view for safer maneuvering in tight spots. This GMC Sierra 2500 AT4 offers the durability expected from a heavy-duty truck without sacrificing tech and comfort. Whether you're towing equipment, commuting across town, or exploring off the beaten path, this truck is ready. Visit our Rockford, IL lot to see the 2026 GMC Sierra 2500 AT4 in person and take a closer look at its robust capabilities and premium features.
Equipment
The GMC Sierra has auto-adjust speed for safe following. Protect it from unwanted accidents with a cutting edge backup camera system. The leather seats in this 2026 GMC Sierra 2500 are a must for buyers looking for comfort, durability, and style. This vehicle's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. This 3/4 ton pickup features a high end BOSE stereo system. This GMC Sierra is pure luxury with a heated steering wheel. An off-road package is installed on the vehicle so you are ready for your four-wheeling best. Bluetooth technology is built into the GMC Sierra, keeping your hands on the steering wheel and your focus on the road. Start this 2026 GMC Sierra 2500 from inside with remote start. It comes equipped with Android Auto for seamless smartphone integration on the road. The vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane.
Packages
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 Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; 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; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with 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; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates. Black Sport Step. Power Sunroof. Gooseneck/5th Wheel Prep Package. Coastal Dune. 1st and 2nd Rows All-Weather Floor Liners. 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.**
Conquer tough jobs and weekend adventures with this 2026 GMC Sierra 2500 AT4, a rugged 4WD powerhouse featuring a V8 6.6L Duramax diesel. Located in Rockford, IL, this GMC Sierra AT4 blends capability and comfort for drivers who demand performance and refinement. Built for off-road confidence, the included Off-Road Package enhances suspension and traction for rocky trails and challenging terrain. The AT4's stout diesel V8 delivers class-leading towing and hauling capability, while heavy-duty construction ensures long-lasting reliability for work and play. Inside, premium touches elevate every drive. Enjoy crystal-clear sound from the BOSE stereo system and seamless smartphone connectivity with Android Auto for navigation and hands-free control. Advanced safety features help keep you protected on Illinois roads: Cross-Traffic Alert warns of approaching vehicles when reversing, and the Back-Up Camera provides a clear view for safer maneuvering in tight spots. This GMC Sierra 2500 AT4 offers the durability expected from a heavy-duty truck without sacrificing tech and comfort. Whether you're towing equipment, commuting across town, or exploring off the beaten path, this truck is ready. Visit our Rockford, IL lot to see the 2026 GMC Sierra 2500 AT4 in person and take a closer look at its robust capabilities and premium features.
Equipment
The GMC Sierra has auto-adjust speed for safe following. Protect it from unwanted accidents with a cutting edge backup camera system. The leather seats in this 2026 GMC Sierra 2500 are a must for buyers looking for comfort, durability, and style. This vehicle's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. This 3/4 ton pickup features a high end BOSE stereo system. This GMC Sierra is pure luxury with a heated steering wheel. An off-road package is installed on the vehicle so you are ready for your four-wheeling best. Bluetooth technology is built into the GMC Sierra, keeping your hands on the steering wheel and your focus on the road. Start this 2026 GMC Sierra 2500 from inside with remote start. It comes equipped with Android Auto for seamless smartphone integration on the road. The vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane.
Packages
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 Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; 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; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with 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; Rear Wheelhouse Liners. AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote. Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates. Black Sport Step. Power Sunroof. Gooseneck/5th Wheel Prep Package. Coastal Dune. 1st and 2nd Rows All-Weather Floor Liners. 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
- 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 Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; 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; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with 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; Rear Wheelhouse Liners
- AT4 Preferred Package: Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Universal Home Remote
- Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates
- Black Sport Step
- Power Sunroof
- Gooseneck/5th Wheel Prep Package
- Coastal Dune
- 1st and 2nd Rows All-Weather Floor Liners
- LED Smoked Amber Roof Marker Lamps
- Apple CarPlay/Android Auto smart device wireless mirroring
- Forward Collision Alert with Automatic Braking
- Front Pedestrian Braking
- Wi-Fi Hotspot capable mobile hotspot internet access
- HD Rear Vision Camera w/Hitch View rear mounted camera
- Adaptive cruise control
- 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 Cross-Traffic Alert 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
- Google Built-In 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
- HD Surround Vision w/Hitch View aerial view camera
- Smart device remote start
- Push-button
- GCW Alert weight capacity alert
- Stolen Vehicle Assistance vehicle tracker with vehicle slowdown
- Bluetooth wireless audio streaming
- Hitch Guidance 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
- Trailer Side Blind Zone Alert blind spot warning
- Following Distance Indicator
- 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
- OnStar vehicle integrated emergency SOS system
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