2026 GMC Sierra AT4
GMC Sierra Details
Automatic
V8, 6.6L
Coastal Dune
4WD
Diesel
0 Miles
Jet Black w/Kalahari Accents
26-2133
1GT4UPEY2TF122311
2500
Leather
AT4
Estimated Payment
$0 / month
About This 2026 GMC Sierra
Vehicle Details
Discover the 2026 GMC Sierra 2500 AT4 4WD with the powerful V8 6.6L Diesel engine, now available in Cathedral City, CA. This rugged, upscale heavy-duty pickup delivers exceptional towing capability, legendary diesel torque, and refined interior comfort for work and weekend adventures. Equipped with the Off-Road Package, the AT4 adds specialized suspension, skid plates, and aggressive all-terrain tires to tackle desert trails or construction sites with confidence. Enjoy modern connectivity with Apple CarPlay for seamless smartphone integration, plus convenient Remote Start for pre-cooling or warming your cabin before you drive. Advanced safety features include Lane Departure Warning and Cross-Traffic Alert to help you stay aware on busy highways and tight parking situations. The GMC Sierra 2500 AT4 blends premium convenience and off-road capability with proven diesel performance and durability. Located in Cathedral City, CA, this GMC Sierra 2500 is competitively priced — we guarantee the best price in the area on this model. Whether you need heavy-duty towing, reliable diesel efficiency, or elevated off-road competence, this 2026 GMC Sierra 2500 AT4 checks all the boxes. Contact us today to schedule a test drive or stop by to see why this GMC Sierra offers outstanding value and capability in Cathedral City.
Equipment
An off-road package is installed on the vehicle so you are ready for your four-wheeling best. This model has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. It features a high end BOSE stereo system. This GMC Sierra offers Android Auto for seamless smartphone integration. Protect this model from unwanted accidents with a cutting edge backup camera system. The GMC Sierra offers Apple CarPlay for seamless connectivity. The steering wheel audio controls on the vehicle keep the volume and station within easy reach. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this 3/4 ton pickup. Anywhere on the planet, you will have hundreds of digital stations to choose from. Start this model from inside with remote start. The vehicle's Lane Departure Warning helps keep you in your lane. The leather seats in this GMC Sierra are a must for buyers looking for comfort, durability, and style.
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; Universal Home Remote. Technology Package. Black Sport Step. Power Sunroof. Mobile Service Plus - 3 Years. Coastal Dune. **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.**
Manufacturer Incentives
Price includes: Guaranteed Incentives: $500 - Buick & GMC Consumer Cash Program - Exp. 9/30/2025. Contact dealer to verify final pricing.
Discover the 2026 GMC Sierra 2500 AT4 4WD with the powerful V8 6.6L Diesel engine, now available in Cathedral City, CA. This rugged, upscale heavy-duty pickup delivers exceptional towing capability, legendary diesel torque, and refined interior comfort for work and weekend adventures. Equipped with the Off-Road Package, the AT4 adds specialized suspension, skid plates, and aggressive all-terrain tires to tackle desert trails or construction sites with confidence. Enjoy modern connectivity with Apple CarPlay for seamless smartphone integration, plus convenient Remote Start for pre-cooling or warming your cabin before you drive. Advanced safety features include Lane Departure Warning and Cross-Traffic Alert to help you stay aware on busy highways and tight parking situations. The GMC Sierra 2500 AT4 blends premium convenience and off-road capability with proven diesel performance and durability. Located in Cathedral City, CA, this GMC Sierra 2500 is competitively priced — we guarantee the best price in the area on this model. Whether you need heavy-duty towing, reliable diesel efficiency, or elevated off-road competence, this 2026 GMC Sierra 2500 AT4 checks all the boxes. Contact us today to schedule a test drive or stop by to see why this GMC Sierra offers outstanding value and capability in Cathedral City.
Equipment
An off-road package is installed on the vehicle so you are ready for your four-wheeling best. This model has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. It features a high end BOSE stereo system. This GMC Sierra offers Android Auto for seamless smartphone integration. Protect this model from unwanted accidents with a cutting edge backup camera system. The GMC Sierra offers Apple CarPlay for seamless connectivity. The steering wheel audio controls on the vehicle keep the volume and station within easy reach. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this 3/4 ton pickup. Anywhere on the planet, you will have hundreds of digital stations to choose from. Start this model from inside with remote start. The vehicle's Lane Departure Warning helps keep you in your lane. The leather seats in this GMC Sierra are a must for buyers looking for comfort, durability, and style.
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; Universal Home Remote. Technology Package. Black Sport Step. Power Sunroof. Mobile Service Plus - 3 Years. Coastal Dune. **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.**
Manufacturer Incentives
Price includes: Guaranteed Incentives: $500 - Buick & GMC Consumer Cash Program - Exp. 9/30/2025. Contact dealer to verify final pricing.
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; Universal Home Remote
- Technology Package
- Black Sport Step
- Power Sunroof
- Mobile Service Plus - 3 Years
- Coastal Dune
- 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
- 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 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
- 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
- GCW Alert weight capacity alert
- Video-feed rearview mirror
- 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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