Used 2026 GMC Sierra 2500HD AT4X Crew Cab
10-Speed Automatic
Vehicle Summary
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Summit White
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Obsidian Rush
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VIN 1GT4UZE74TF105626
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Stock # UB6742
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Condition Used
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Exterior Summit White
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Interior Obsidian Rush
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Engine 6.6L V8
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Fuel Type
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Drivetrain 4x4
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Transmission 10-Speed Automatic
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Location Riverhead Ford
Mileage
Miles
Performance
HP
Torque
Key Features
Collision Avoidance
Backup Camera
Tow Package
Lane Departure Warning
Rear Cross Traffic Alert
Blind Spot Monitor
Parking Assist
Fog Lights
Side-Impact Air Bags
Bluetooth
Satellite Radio
Alloy Wheels
Heated Seats
Leather Seats
Automatic Climate Control
Sunroof/Moonroof
Adaptive Cruise Control
Cruise Control
Remote Start
Push Start
Keyless Entry
Android Auto
Apple Car Play
Wifi Hotspot
Navigation System
Vehicle Description
Meet the 2026 GMC Sierra 2500HD AT4X — a powerhouse crew cab built for serious work and premium comfort. This one-owner, locally traded white beauty delivers the perfect blend of capability and refinement, with a muscular 6.6L V8 engine, 10-speed automatic transmission, and 4WD to handle any terrain. The striking Obsidian Rush leather interior sets the tone for a truck that commands respect both on and off the pavement.
- Bose Premium Series 12-Speaker System with SiriusXM 360L Trial Subscription
- 2-Speed Active Transfer Case and Hill Descent Control for off-road confidence
- Power sunroof and multicolor 15" head-up display
- HD Surround Vision with bed view and trailer camera provisions
- Heated and ventilated front seats with 16-way power adjustment and lumbar support
- Wireless phone projection and 120-volt bed-mounted and instrument panel power outlets
- Snow Plow Prep/Camper Package and hard folding truck bed cover by RealTruck Advantage
- Ultrasonic front and rear park assist with trailer side blind zone alert
- Remote vehicle starter system and keyless open and start
- Gloss black header grille and LED cargo area lighting
This AT4X stands ready to deliver capability and comfort mile after mile. Come experience the refined power and technology that sets this Sierra apart — visit us today to take it for a test drive.
Welcome To
Riverhead Motors
Riverhead · South Hampton · Wading River · East Hampton · Southold
About Our Ford, Mazda, Toyota, and GMC Dealerships
Riverhead Motors, your trusted automotive group serving the Long Island community for years. At Riverhead Motors, we proudly represent four outstanding dealerships: Riverhead Mazda, Riverhead Ford, Riverhead Toyota, and Riverhead GMC. Our commitment to providing exceptional customer service, a wide selection of vehicles, and reliable automotive services has earned us the loyalty of drivers throughout the area. Whether you're in the market for a new or pre-owned vehicle, need maintenance or repairs, or are seeking financing options, Riverhead Motors is here to help you every step of the way.
Vehicle Features
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Interior
- Ventilated driver and front passenger seats
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Driver seat power reclining, lumbar support, seatback side bolster support, cushion tilt, fore/aft control and height adjustable control
- Dual-zone front climate control
- Massaging driver seat
- Massaging front passenger seat
- Automatic climate control
- Leather steering wheel
- Manual tilting steering wheel
- Manual telescopic steering wheel
- Vinyl rear seat upholstery
- Rear under seat climate control ducts
- Rear console climate control ducts
- Bucket front seats
- Driver seat with 12-way directional controls
- Front seat center armrest
- Front passenger seat with 12-way directional controls
- Driver seat with 4-way power lumbar
- Front passenger seat with 4-way power lumbar
- Split-bench rear seat
- Fold-up rear seat cushion
- 60-40 folding rear seats
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Exterior
- First-row sliding and tilting glass sunroof with power 1-touch activation sunshade
- Hitch Guidance vehicle to trailer hitching assist
- Trailer tire pressure sensors
- Trailer light test
- Trailer light malfunction warning
- Trailer theft alarm
- Trailer brake controller
- Trailer sway control
- Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
- Power extendable trailer mirrors
- Trailer hitch light
- Illuminated power running boards
- Wheel hub covers
- Exterior mirror LED spot lights
- 18 x 8-inch front and rear machined w/painted accents aluminum wheels
- LT305/70RR18 MT BSW front and rear tires
- Trailer wiring harness
- Class IV tow rating
- Trailer hitch
- 3 underbody skid plates
- Spray-in pickup bed liner
- Pickup bed-rail protectors
- Front splash guards
- Rear splash guards
- Full-size spare tire with steel wheel
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Mechanical
- AutoTrac part and full-time 4WD
- 6.6L V-8 direct injection, variable valve control, regular gasoline, engine with 401HP
- 6.6L V-8
- Driver selectable steering effort
- Allison 10-speed automatic
- Selectable mode transmission
- Sequential shift control
- Automatic
- Four-wheel drive
- Two-Speed Transfer Case
- Off-road ride suspension
- Digital Steering Assist speed sensitive power steering
- Lock-up transmission
- Front mounted engine
- Spark ignition system
- Longitudinal mounted engine
- Iron engine block
- Aluminum cylinder head
- Overdrive transmission
- Transmission oil cooler
- Engine Configuration: V8
- Powertrain type: ICE
- All-speed ABS and driveline traction control
- Electronic transfer case shift
- Independent front suspension
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Safety
- Forward Collision Alert with Automatic Braking
- Front Pedestrian Braking
- HD Rear Vision Camera w/Hitch View rear mounted camera
- Head-up display
- Automatic Emergency Braking brake assist system
- Lane Departure Warning
- Rear Cross-Traffic Alert collision warning
- Teen Driver restricted driving mode/alerts
- HD Surround Vision w/Hitch View aerial view camera
- Video-feed rearview mirror
- Stolen Vehicle Assistance vehicle tracker with vehicle slowdown
- 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
- Off-road speed control
- Auto high-beam headlights
- Immobilizer
- Digital/analog instrumentation display
- Configurable instrumentation gauges
- Electronic stability control system with anti-roll
- Hill Descent Control (HDC)
- Hill start assist
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Entertainment
- Primary monitor touchscreen
- Bluetooth wireless audio streaming
- Bose Performance Series speakers
- AudioPilot active noise cancellation
- Premium GMC Infotainment System external memory control
- Internet radio capability
- 2 exterior speakers
- Voice activated audio controls
- AM/FM/SiriusXM with 360Lsatellite
- 2 total number of 1st row displays
- 13.4 inch primary display
- Amplifier
- Bose Centerpoint Surround digital signal processor
- 12 speakers
- Seek scan
- Auxiliary input jack
- 3 month satellite trial subscription
- Fixed audio antenna
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Crash Safety Ratings
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FRONT
5 STAR
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Factory Warranty
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Basic warranty
36 month/36,000 miles
*Confirm any warranty information with dealer before purchase.Powertrain warranty
60 month/60,000 miles
*Confirm any warranty information with dealer before purchase.Corrosion perforation warranty
72 month/100,000 miles
*Confirm any warranty information with dealer before purchase.Roadside warranty
60 month/60,000 miles
*Confirm any warranty information with dealer before purchase.
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Disclaimers
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Used vehicle pricing includes all offers and incentives. Tax, Title and Tags not included in vehicle prices shown and must be paid by the purchaser. Some prices may include manufacturer-to-dealer offers that are not compatible with manufacturer special finance programs and/or lease offers. While great effort is made to ensure the accuracy of the information on this site, errors do occur so please verify information with a customer service rep.
**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a {term_used} month term, interest and down-payment.
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Based on EPA mileage ratings. Use for comparison purposes only. Your actual mileage will vary depending on how you drive and maintain your vehicle.
All advertised vehicles are subject to actual dealer availability. Certain vehicles listed may not be available, or may have different prices. Prices exclude state tax, license, document preparation fee, smog fee, and finance charges, if applicable. Vehicle option and pricing are subject to change. Prices include all dealer incentives. Pricing and availability varies by dealership. Please check with your dealer for more information. Prices do not include dealer charges, such as advertising, that can vary by manufacturer or region, or costs for selling, preparing, displaying or financing the vehicle. Images displayed may not be representative of the actual trim level of a vehicle. Colors shown are the most accurate representations available. However, due to the limitations of web and monitor color display, we cannot guarantee that the colors depicted will exactly match the color of the car. Information provided is believed accurate but all specifications, pricing, and availability must be confirmed in writing (directly) with the dealer to be binding. Neither the Dealer nor the website provider is responsible for any inaccuracies contained herein and by using this application you the customer acknowledge the foregoing and accept such terms.
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