2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
STERLING METALLIC
4WD
Diesel
1 Miles
Jet Black w/Kalahari Accents
826119
1GT4UPEY4TF226640
2500
Leather
AT4
Estimated Payment
$0 / month
About This 2026 GMC Sierra
Vehicle Details
2026 GMC Sierra 2500 AT4 4WD - V8 6.6L Diesel, Rockford IL. Looking for powerful capability and refined comfort? This GMC Sierra 2500 AT4 pairs a proven V8 6.6L Duramax diesel with a rugged 4WD chassis and Off-Road Package to handle worksite demands and weekend trails with confidence. The interior features premium leather seats for long-haul comfort, while modern safety and convenience tech includes Cross-Traffic Alert and a Back-Up Camera to assist in tight spots and busy parking lots. Stay connected with Apple CarPlay for seamless smartphone integration and navigation on the go. Built for towing and payload, this diesel GMC Sierra delivers exceptional torque and durability for hauling heavy loads or towing trailers without compromise. The AT4 trim adds off-road-ready suspension, skid plates, and all-terrain tires to extend capability beyond pavement. Located in Rockford, IL, this 2026 GMC Sierra 2500 AT4 is priced to move - we offer the best price on a locally available diesel heavy-duty pickup, combining value and performance. Whether you need a reliable truck for work, recreation, or both, this GMC Sierra delivers rugged capability, advanced safety features, and premium comfort. Contact our Rockford showroom to schedule a test drive and experience this powerful diesel 2500 AT4 today.
Equipment
This vehicle'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 this model . Never get into a cold vehicle again with the remote start feature on the GMC Sierra. Apple CarPlay: Seamless smartphone integration for this GMC Sierra - stay connected and entertained on the go! This 2026 GMC Sierra 2500 features a high end BOSE stereo system. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. This GMC Sierra's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this model. Anywhere on the planet, you will have hundreds of digital stations to choose from. This GMC Sierra features steering wheel audio controls. This unit features a hands-free Bluetooth phone system.
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. Black Badging Package: Black Sierra Nameplates; Black GMC Emblems. Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates. Black Sport Step. Power Sunroof. Sterling Metallic. 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.**
2026 GMC Sierra 2500 AT4 4WD - V8 6.6L Diesel, Rockford IL. Looking for powerful capability and refined comfort? This GMC Sierra 2500 AT4 pairs a proven V8 6.6L Duramax diesel with a rugged 4WD chassis and Off-Road Package to handle worksite demands and weekend trails with confidence. The interior features premium leather seats for long-haul comfort, while modern safety and convenience tech includes Cross-Traffic Alert and a Back-Up Camera to assist in tight spots and busy parking lots. Stay connected with Apple CarPlay for seamless smartphone integration and navigation on the go. Built for towing and payload, this diesel GMC Sierra delivers exceptional torque and durability for hauling heavy loads or towing trailers without compromise. The AT4 trim adds off-road-ready suspension, skid plates, and all-terrain tires to extend capability beyond pavement. Located in Rockford, IL, this 2026 GMC Sierra 2500 AT4 is priced to move - we offer the best price on a locally available diesel heavy-duty pickup, combining value and performance. Whether you need a reliable truck for work, recreation, or both, this GMC Sierra delivers rugged capability, advanced safety features, and premium comfort. Contact our Rockford showroom to schedule a test drive and experience this powerful diesel 2500 AT4 today.
Equipment
This vehicle'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 this model . Never get into a cold vehicle again with the remote start feature on the GMC Sierra. Apple CarPlay: Seamless smartphone integration for this GMC Sierra - stay connected and entertained on the go! This 2026 GMC Sierra 2500 features a high end BOSE stereo system. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. This GMC Sierra's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this model. Anywhere on the planet, you will have hundreds of digital stations to choose from. This GMC Sierra features steering wheel audio controls. This unit features a hands-free Bluetooth phone system.
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. Black Badging Package: Black Sierra Nameplates; Black GMC Emblems. Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates. Black Sport Step. Power Sunroof. Sterling Metallic. 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
- Black Badging Package: Black Sierra Nameplates; Black GMC Emblems
- Snow Plow Prep/camper Package: 220-Amp Alternator; Skid Plates
- Black Sport Step
- Power Sunroof
- Sterling Metallic
- 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
- -