2026 GMC Yukon XL AT4

  • New
  • Diesel
$94,285$96,785 MSRP
Value Your Trade
Hertrich Buick GMC of Seaford
Location Details
Website
Call 302-990-8736
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    The overview

    Exterior Color
    Summit White
    Interior Color
    Forest Storm with Mahogany Accents, Perforated lea
    Fuel Economy
    20/24 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    3.0L Duramax® Turbo Diesel engine
    VIN
    1GKS2HK85TR285027
    Stock Number
    G26229
      • Basic: 3 Years/36,000 Miles
      • Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 Miles
      • Drivetrain: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Maintenance: First Visit: 12 Months/12,000 Miles
      • Roadside Assistance: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Warranty: <<< Preliminary 2026 Warranty >>>
      • Max seating capacity: 8
      • Fuel System: Direct Injection
      • Fuel tank capacity: 28 gal
      • Horsepower: 305
      • Towing capacity: 7700 lbs
      • 16.8" diagonal advanced color LCD display with Google built-in compatibility:
        • Includes navigation capability1
        • Connected apps, and personalized profiles for each driver's setting
        • Natural voice recognition and phone integration
        • High contrast display with local blacklight dimming
        • Includes climate and vehicle setting controls
      • 5G Wi-Fi® hotspot capable:
        • Service varies with conditions and location. Requires active service plan and paid AT&T® data plan. See onstar.com for details and limitations.
      • Bose CenterPoint® Surround 10-speaker audio system:
        • Bose is renowned for expert sound engineering and high-quality audio and with speakers positioned throughout the cabin, you'll get rich, concert-like sound
      • Rear Seat Media System:
        • Dual 12.6" diagonal color-touch LCD HD rear screens, mounted to the front seatbacks
        • Two 2-channel wireless headphones with 2 HDMI ports on the back of the center console
        • Compatible with Bluetooth® headphones1
        • May require additional optional equipment
      • SiriusXM with 360L Trial Subscription:
        • With your trial subscription, new GM vehicles equipped with SiriusXM with 360L advance in-car technology will bring you closer to your favorite stars, artists, creators, hosts and athletes1
        • SiriusXM with 360L transforms your ride with our most extensive and personalized radio experience on the road that lets you enjoy ad-free music, talk and news, live sports, comedy, podcasts and more
        • Experience SiriusXM wherever you go in your vehicle and on the SiriusXM app with personalization features to make discovering your perfect entertainment easier than ever before
      • Wi-Fi® Hotspot capable:
        • Terms and limitations apply. See onstar.com or dealer for details.
      • Wireless Apple CarPlay/Wireless Android Auto capability for compatible phones:
        • Apple CarPlay vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay is a trademark of Apple Inc. Siri, iPhone and Apple Music are trademarks for Apple Inc, registered in the U.S. and other countries.
        • Vehicle user interface is a product of Google and its terms and privacy statements apply. To use Android Auto on your car display, you'll need an Android phone running Android 6 or higher, an active data plan, and the Android Auto app. Google, Android and Android Auto are trademarks of Google LLC.
      • 17" all-season blackwall spare tire:
        • P265/70R17
      • 17" full-size spare steel wheel
      • 20" all-terrain blackwall tires:
        • P275/60R20
      • 20" machined and painted Carbon Flash Metallic wheels:
        • Paired with all-terrain blackwall tires
      • Acoustic laminated glass:
        • Helps keep out traffic and road noises
        • Dampens sounds from the outside to help give you a quiet ride
      • AutoSense Power Liftgate:
        • Automatically opens when the system senses the key fob at the rear of the vehicle for several seconds
        • As liftgate is opening, if you walk away from your vehicle, the liftgate will close
        • Memory height function, located in the overhead console, allows you to program how high the gate opens to suit you
        • You can also press the liftgate open button on the key fob or use the interior or exterior release buttons
        • Electronic obstacle detection will reverse an automatic open or close if it senses something in its path to help prevent damage to the liftgate
        • AutoSense can be disabled or enabled utilizing the center touchscreen
      • Black roof-mounted side rails:
        • Enhances the appearance of your vehicle
      • Body-color door handles
      • Body-color heated, driver-side auto-dimming power outside mirrors:
        • Both mirrors are heated and are activated when the rear defogger is engaged, helping to clear them of ice, snow and frost to help improve visibility
        • Power adjustments allow you to move both side mirrors with the touch of a button
        • Power-folding feature lets you fold the mirrors in
        • The auto-dimming feature automatically adjusts the outside mirror when it senses bright light from behind
        • Integrated turn signal indicators help communicate your intention to change lanes
      • Deep-tinted glass:
        • Tint on rear side windows and rear liftgate window
      • Front fascia with high-approach angle
      • Front license plate bracket:
        • Front bracket is included if displaying a front license plate is required in your state
      • Illuminated GMC mirror emblem:
        • May require additional optional equipment
      • LED fog lamps:
        • Help minimize glare in adverse driving conditions
      • LED headlamps with animated lighting:
        • Provide a bright, intense beam of light to illuminate the road ahead
        • Help improve down-the-road visibility in low-light conditions
        • LED Daytime Running Lamps help make it easier for other drivers to see the front of your vehicle during the day
        • Animated lighting sequence activates when you lock or unlock your vehicle
      • LED tail lamps with animated lighting:
        • Help improve visibility in low-light conditions
        • Animated lighting sequence activates when you lock or unlock your vehicle
      • Painted mirror caps:
        • Body-color on Elevation, Denali and Denali Ultimate
        • Gloss Black on AT4 and AT4 Ultimate
      • Panoramic power sunroof:
        • Opens over the first row and second row at the push of a button
        • Tilts upwards for extra ventilation
        • Retracts into the roof
        • Power sunshade can be closed when you want to block light from entering the cabin from above
        • Dual panel glass
        • May require additional optional equipment
      • Power-retractable assist steps with LED perimeter lighting:
        • Textured step pads help provide secure footing
        • Extend from wheel well to wheel well
        • Retracts when not in use
        • May require additional optional equipment
      • Rainsense automatic wipers:
        • Turn on automatically when sensors detect varying degrees of precipitation on the windshield
        • The intermittent feature adjusts the speed of the wipers to help keep the windshield clear in a variety of conditions
      • Rear intermittent wiper:
        • Variable-speed
        • Keeps your rear window clear to help enhance visibility
      • Spare tire carrier:
        • Lockable winch-type, located under frame in rear
      • Upper active aero shutters:
        • Shutters automatically close at high speeds to help enhance aerodynamics
        • Shutters reopen at lower speeds or when needed to help cool the engine compartment
        • Located in the front fascia
      • 11" diagonal color Driver Information Center:
        • Includes driver personalization, warning messages and vehicle information
        • High-contrast display with local backlight dimming
      • 120-volt power outlets:
        • Two outlets, located in the rear of the center console and cargo area
      • 15" diagonal multicolor Head-Up Display:
        • Projects vehicle information onto the windshield low in the driver's line of sight to help keep your eyes on the road
        • Can display directions and other vehicle information
        • May require additional optional equipment
      • 4-way power driver and front passenger lumbar control:
        • Lumbar area extends, retracts and moves up and down to provide lower-back support
        • May require additional optional equipment
      • 8-way power driver and front passenger seat adjusters:
        • Forward and back
        • Up and down
        • Tilt seat cushion back and upright
        • Recline seatback up and down
      • Adaptive Cruise Control:
        • Automatically follows a detected vehicle ahead at a driver-selected following gap1
        • If no vehicle is detected in your path, works like regular cruise control
        • You can always override the feature and take control
      • All-weather cargo mat:
        • Helps protect the cargo area of your vehicle from dirt and mud
        • Engineered to fit your vehicle
        • Embossed with the vehicle logo
        • May require additional optional equipment
      • Assist handles:
        • Front passenger A-pillar and second row outboard B-pillar
        • Deletes front passenger A-pillar assist handle on AT4 Ultimate and Denali Ultimate
      • Bright sill plates:
        • Front and rear doors
        • AT4 and AT4 Ultimate include branded sill plates
        • Denali and Denali Ultimate include branded sill plates
      • Cabin Air Filter:
        • Helps keep your cabin air fresh from dust and particulates
      • Carpeted floor covering:
        • Color-keyed
      • Carpeted floor mats:
        • Removable color-keyed floor mats for first and second rows
      • Center console USB ports:
        • 2 type-A and C, charge and data1
        • Located inside center console
        • May require additional optional equipment
      • Content theft-deterrent system:
        • As part of the Advanced Security Package, additional shielded, self-powered alarm system will set off an alarm when vehicle tampering has been detected
        • Helps deter potential break-in or theft
        • Inclination sensors that detect movement of the vehicle, such as a change in vehicle orientation
        • May require additional optional equipment
      • Driver and front passenger visors with illuminated mirrors:
        • Include covered mirrors
        • Extendable for enhanced shading coverage
      • Electrical theft-deterrent system:
        • Helps deter unauthorized entry, helping to protect your vehicle and its contents
        • Immobilizes the engine to help prevent theft
        • Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitter
      • First and second row all-weather floor liners:
        • Help protect your interior from road debris and the elements
        • Contoured to fit the first and second rows
        • Feature a custom pattern that collects rain, mud, snow and other debris
        • May require additional optional equipment
      • Front bucket seats
      • Front console USB ports:
        • 2 type-A and C, charge and data1
        • Located on front console
      • Glass breakage sensor:
        • As part of the Advanced Security Package, activates the alarm when the sensor detects unauthorized tampering of the vehicle glass
        • May require additional optional equipment
      • Heated and ventilated driver and front passenger seats:
        • Keep cool in summer and warm in winter with these heated and ventilated seat cushions and seatbacks
        • Separate buttons allow you to choose from 3 levels of warmth or cool
        • May require additional optional equipment
      • Heated driver and front passenger seats:
        • At the touch of a button you can warm the cushions and seatbacks with multilevel temperature control
        • Individually controlled
      • Heated second row outboard seats:
        • At the touch of a button you can warm the cushions and seatbacks
        • Provide comfort in cold weather for passengers in the second row outboard seating positions
        • Passengers have their own controls to set the perfect temperature
      • Heated steering wheel:
        • Based on the vehicle's interior temperature, the automatic heated steering wheel will turn on when the automatic front heated seat is on
        • Can turn on/off manually by pressing the button on the steering wheel
      • Illuminated cargo sill plate:
        • Adds a stylish, more refined appearance
        • May require additional optional equipment
      • Illuminated front and rear door sill plates:
        • Accent your vehicle for a customized appearance
        • Provide additional light as you or your passengers enter and exit the vehicle at night
        • May require additional optional equipment
      • Inclination sensor:
        • As part of the Advanced Security Package, detects vertical motion of your vehicle and triggers an alarm response if your vehicle or wheels are lifted with a tow truck or a vehicle jack
        • May require additional optional equipment
      • Interior lighting:
        • Driver- and passenger-side lighting with delayed entry feature activates when you open any door with controls located in the overhead console
        • Dome light
        • Map lights in front and second row seat positions
        • Cargo light, door handle or Remote Keyless Entry-activated illuminated entry
      • Interior movement sensor:
        • As part of the Advanced Security Package, monitors the vehicle interior
        • Activates the alarm when it senses unauthorized entry or movement
        • Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitter
        • May require additional optional equipment
      • Keyless Open:
        • With the key fob in your possession, locks and unlocks your vehicle's doors without having to use the key fob, increasing convenience
        • Lockout protection helps you avoid locking keys in the vehicle
      • Memory settings:
        • Recalls 2 driver presets for 8-way power driver seat and outside rearview mirrors
        • Also includes memory settings for the power tilt and telescopic steering column on AT4, AT4 Ultimate, Denali and Denali Ultimate
        • Press memory button 1 or 2 or exit seat button to program and recall preferences
      • Overhead assist handles:
        • Driver and front passenger, located in headliner
      • Power 60/40 split-folding third row bench seat:
        • Split-folding feature allows each side to fold flat independently
        • Operate power from the overhead console or the cargo area
      • Power door locks:
        • Programmable
        • Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob
        • Lockout protection helps you avoid locking your key fob in the vehicle
      • Power tilt and telescoping steering column:
        • Allows the driver to adjust the steering wheel up or down, and the steering column forward or back
        • Use the driver memory to save and recall memory settings
        • Provides extra comfort when entering or exiting the vehicle
      • Power windows with driver express-up/down:
        • Quickly raises or lowers the window with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Power windows with front passenger express-up/down:
        • Quickly raises or lowers the window with the touch of a button
        • If an obstruction is detected, the anti-pinch feature will auto-reverse
      • Power windows with rear express-down:
        • Quickly lowers the window with the touch of a button
      • Power-release second row bucket seats:
        • Include a power release that lets you conveniently fold and tumble the seats at the press of a button
        • May require additional optional equipment
      • Power-sliding center console:
        • Overhead power switch allows center console to slide back up to 10" to place larger items between the front seats
        • When rearward, access to a hidden storage drawer can help keep smaller items secure
        • Includes manual sliding armrest
        • May require additional optional equipment
      • Rear Camera Mirror:
        • Uses a camera to provide you with the option of using a wide and less obstructed view behind your vehicle while driving instead of a traditional rearview mirror1
        • The feature also allows brightness, vertical tilt and zoom adjustments
        • May require additional optional equipment
      • Rear air conditioning
      • Rear window defogger:
        • Helps to keep your rear view clear of fog or frost
        • Utilizes a warming grid to help remove fog or frost from the rear window
      • Remote Start:
        • Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferences
        • Locks doors and turns on parking lamps while the engine is running
        • The heated or ventilated seats may also be activated, depending on certain weather conditions
      • Safety Alert Seat:
        • Uses left-, right- or both-side driver seat vibration pulses to help you detect and identify the direction of potential crashes1
        • You can also switch to beeping crash avoidance alerts
      • Smart Trailer Integration Indicator:
        • Monitor and control a range of smart trailering features
        • May require additional optional equipment
      • Steering column lock:
        • Helps prevent theft by allowing the steering wheel to operate only with the proper key fob
      • Steering-wheel mounted controls:
        • Allow the driver to easily operate the Driver Information Center, Adaptive Cruise Control, Forward Collision Alert1 following gap distance setting and heated steering wheel
      • Super Cruise®, advanced driver assistance technology:
        • Allows hands-free driving on compatible roads1
        • While you're using the technology, it helps prompt you to pay close attention to the road so you're ready to take control
        • Includes 3 years of OnStar One with Super Cruise upgrade2
        • May require additional optional equipment
      • Third row USB ports:
        • 2 type-C, charge-only1
        • Located in the outboard seating areas, above the cup holders
      • Third row all-weather floor liner:
        • Protect your vehicle from road debris and the elements
        • Contoured to fit the third row
        • Feature a custom pattern that collects rain, mud, snow and other debris
        • May require additional optional equipment
      • Tri-zone automatic climate control:
        • Automatically maintains the selected temperatures for the driver, front passenger and rear seat passengers
      • Universal Home Remote:
        • Conveniently activates compatible devices such as garage door openers, security systems, and home automation devices from inside your vehicle
      • Warning tones:
        • Include headlamp on, driver and right-front passenger seat belt unfasten and turn signal on
      • Wireless Phone Charging:
        • Uses induction technology for portable electronic devices1
        • Conveniently charge your phone while driving
        • Located below the instrument panel
      • Wrapped steering wheel:
        • Includes controls for audio, phone, voice recognition and cruise control
      • 10-speed automatic transmission:
        • Electronically controlled with overdrive
        • Includes Traction Select System including tow/haul
        • May require additional optional equipment
      • 250-amp alternator:
        • May require additional optional equipment
      • 3.0L Duramax® Turbo Diesel engine:
        • 305 hp @ 3750 rpm
        • 495 lb-ft of torque @ 2750 rpm
        • Paired with a 10-speed automatic transmission
        • May require additional optional equipment
      • 3.23 rear axle ratio
      • 4-wheel antilock disc brakes:
        • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
        • Duralife brake rotors have better resistance to corrosion to increase rotor life, minimize brake pulsation, and improve aesthetic appearance
      • 7,700 lbs. GVWR:
        • When properly equipped; Gross Vehicle Weight Rating (GVWR) includes weight of vehicle, passengers, cargo and equipment
        • May require additional optional equipment
      • Adaptive Air Ride suspension:
        • 4-corner suspension replaces coil spring suspension with variable rate springs
        • Adjusts the stiffness of its suspension and the pressure for enhanced ride comfort
        • Provides selectable and automated ride height options to improve ground clearance, enable improved passenger entry/exit, and improve aerodynamic performance
        • Delivers automatic load-leveling
        • May require additional optional equipment
      • Automatic Stop/Start:
        • At complete stops, when drivers keep their foot on the brake pedal, and under certain conditions, the engine shuts off
        • When drivers remove their foot from the brake, the engine automatically restarts
        • Includes disable button with each engine cycle
      • Automatic Stop/Start disable button
      • Autotrac® 2-speed transfer case:
        • When in AUTO mode, remains in 2WD mode until the system detects wheel slippage
        • Automatically engages 4WD until traction is regained
        • Allows driver shift-on-the-fly capability from 2WD to 4WD at any speed
        • Provides a neutral position for dinghy/flat towing behind another vehicle
        • May require additional optional equipment
      • Dual-outlet exhaust:
        • Dual system with dual rectangular twin polished stainless-steel tips
      • Electronic Limited-Slip Differential (eLSD):
        • Uses vehicle sensors and driver inputs to determine the optimum amount of engagement for driving conditions
        • Optimizes torque split between the rear wheels that provide enhanced stability and maximum traction
        • May require additional optional equipment
      • Electronic Precision Shift:
        • Steering column-mounted electronic gear shift selector
      • Engine air filtration monitor
      • Engine block heater:
        • Helps ease cold weather starts
        • Heats the engine and engine block fluids
      • External auxiliary transmission oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps prevent transmission overheating
        • Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
      • External engine oil cooler:
        • Heavy-duty air-to-oil cooler
        • Helps the engine generate consistent peak performance
        • Helps prevent possible engine oil breakdown during high-performance driving or under loads
      • Heavy-Duty Air Filter:
        • Thick construction helps to trap more dirt before it can enter the air intake
      • Heavy-duty 850 cold-cranking amps battery:
        • Maintenance-free with rundown protection and retained accessory power
        • May require additional optional equipment
      • Integrated trailer brake controller:
        • Helps provide measured brake force signaling to electric-controlled trailer brake systems
        • Trailer gain and output are displayed in the Driver Information Center
        • May require additional optional equipment
      • Key Card
      • Keyless Start:
        • Uses an integrated key fob sensor instead of a traditional key
        • Keep your keys in your purse or pocket to start your vehicle
        • With the vehicle in Park or Neutral, press the brake pedal and then press the engine start/stop button to start the engine; the green indicator on the button will illuminate
        • Shift to Park and press the engine start/stop button to turn off the engine
      • Magnetic Ride Control:
        • Monitors each wheel independently during your drive, adjusting vertical suspension every millisecond to maintain a smooth ride
        • Enhanced ride and handling in a variety of road surface conditions
        • Uses electro-magnetism to change the damper fluid's properties (no moving valves)
        • Enhances traction and allows more precise steering
      • Mechanical jack with tools
      • Performance Front Skid Plate:
        • Helps provide underbody protection
      • Red recovery hooks:
        • Two front horizontal frame-mounted1
      • Trailering equipment:
        • Trailering hitch platform
        • 2" trailering receiver
        • 7-wire electrical harness and 7-pin connector for connecting your trailer's lights and brakes to your vehicle
      • AT4 Premium Package:
        • Technology Package, which includes Rear Camera Mirror1, Head-Up Display1, Advanced Security Package, second row power bucket seats and power-sliding center console
        • Panoramic power sunroof
        • Power-retractable assist steps with LED perimeter lighting
      • AT4 Premium Plus Package:
        • AT4 Premium Package, which includes Technology Package, Panoramic power sunroof and power-retractable assist steps with LED perimeter lighting
        • Max Trailering Package
        • Premium Capability Package with Active Response 4WD
        • Enhanced Trailering Technology Package
        • Rear Seat Media System
        • Includes Super Cruise driver assistance technology1 when 3.0L Duramax® Turbo-Diesel engine is ordered
        • May require additional optional equipment
      • Advanced Security Package:
        • Door lock and latch shields
        • Inclination sensor
        • Vehicle interior movement sensor
        • Self-powered horn
        • Glass break sensors in rear quarter glass and liftgate window
        • May require additional optional equipment
      • Enhanced Trailering Technology Package:
        • Trailer Camera Provisions
        • Trailering assist guidelines
        • May require additional optional equipment
      • Floor Liner Package:
        • First and second row all-weather floor liners on Elevation, AT4 and AT4 Ultimate
        • Premium first and second row all-weather floor liners on Denali and Denali Ultimate
        • Third row all-weather floor liner
        • All-weather cargo mat
      • Illumination Package:
        • Front and rear illuminated door sill plates
        • Illuminated cargo sill plate
        • Illuminated mirror GMC emblem
      • Max Trailering Package:
        • Blind Zone Steering Assist with Trailering1
        • Hitch View1
        • Smart Trailer Integration Indicator
        • Integrated trailer brake controller
        • Extra capacity cooling system with gas engines
        • 4WD models also include 2-speed active transfer case and Hill Descent Control on Elevation and Denali
        • May require additional optional equipment
      • Premium Capability Package with Active Response 4WD:
        • Air Ride Adaptive Suspension
          • Ride height control and variable air springs offer cloud-like comfort whether carrying a light or heavy load
          • The vehicle can raise one inch or two inches for improved ground clearance at low speed—ideal for off-road maneuvering (4WD only)
          • The vehicle can also lower two inches for easy entry/egress and cargo loading
        • Active Response 4WD System
          • This system is designed to help the driver confidently maneuver in slick or off-road conditions, by seamlessly sending optimal torque to each wheel to help improve traction
          • The system is comprised of four fully-integrated features which work together to optimize traction: AutoTrac® 2-speed transfer case, Traction Select (Drive Mode Control), Stabilitrak® (Brake-based) and Electronic Limited Slip Differential (eLSD)
        • May require additional optional equipment
      • Technology Package:
        • Head-Up Display1
        • Rear Camera Mirror1
        • Heated and ventilated driver and front passenger seats and 4-way power driver and front passenger lumbar seat adjusters on Elevation
        • Advanced Security Package, second row power bucket seats and power-sliding center console on AT4
        • May require additional optional equipment
      • IntelliBeam:
        • At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions1
      • 3 Years OnStar One:
        • Safety Services, Wi-Fi, and In-Vehicle Apps, all connected by OnStar1
        • Safety Services, Wi-Fi, and In-Vehicle Apps, all connected by OnStar1
        • Info at OnStar.com/plans
        • Info at OnStar.com/plans
        • May require additional optional equipment
      • 7 airbags:
        • Frontal airbags for driver and front passenger1
        • Driver inboard seat-mounted side-impact airbag1
        • Seat-mounted side-impact airbags for driver and front passenger1
        • Head-curtain airbags for front and rear outboard seating positions1
        • Includes front outboard Passenger Sensing System for frontal passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
      • Blind Zone Steering Assist:
        • Can alert you and provide a brief, firm turn of the steering wheel when a potential crash is detected with a moving vehicle in the lane you're entering1
      • Blind Zone Steering Assist with Trailering:
        • Can alert you and provide a brief, firm turn of the steering wheel when a potential crash is detected with a moving vehicle in a side blind zone that is extended to trailer lengths1
        • May require additional optional equipment
      • Buckle to Drive:
        • Helps remind the driver to buckle their seat belt before driving by preventing the vehicle from being shifted out of PARK temporarily when the driver's seat belt is not buckled
        • The feature also reminds the front passenger to buckle up, if equipped
      • Driver Attention Assist:
        • Can provide alerts if it detects you are distracted or drowsy1
        • If severe drowsiness is detected, can prompt you to phone a friend, call OnStar® or navigate to a nearby place of interest2
        • May require additional optional equipment
      • Enhanced Automatic Parking Assist:
        • Can automatically steer, brake, and shift gears to park your vehicle into a detected parallel or perpendicular parking space1
        • Can also help you unpark your vehicle
        • You must always be prepared to override the feature and take control
      • Forward Collision Alert:
        • Warns you if it detects a potential collision with a detected vehicle you're following so you can take action1
        • Can also provide a tailgating alert if you're following a vehicle much too closely
      • Front Pedestrian and Bicyclist Braking:
        • At speeds between 5 and 50 mph, can help you avoid or reduce the severity of a collision with a pedestrian or bicyclist it detects directly in front of you1
        • Provides alerts and can automatically provide hard emergency braking or enhance driver's hard braking
        • Limited nighttime and low visibility performance
      • HD Surround Vision:
        • Provides selectable digital camera views of the area around your vehicle1
        • Can help you park or avoid vehicles and objects1
        • You can also display a guideline to show where your vehicle is heading1
      • Hill Descent Control:
        • Uses antilock braking to help provide a smooth, controlled descent
        • Helps driver maintain control of the vehicle without depressing the brake pedal
        • Activates by pushing a button on the switch bank to the left of the steering wheel
        • May require additional optional equipment
      • Hill Start Assist:
        • When you are stopped on an incline, this feature keeps the brakes engaged for a split second as you transition from brake pedal to gas pedal
        • Automatically releases once you press down on the accelerator
        • Prevent vehicle roll-back while the driver moves his/her foot from the brake to the accelerator pedal
      • Hitch Guidance:
        • When in Reverse, displays a centered guideline on the Rear Vision Camera view1
        • Can help you line up the hitch to your trailer
        • When driving, lets you check the trailer using Rear Vision Camera view
      • Hitch View:
        • Shows a close-up view of the trailer hitch1
        • In Reverse, the view can be used to line up your hitch to your trailer
        • When driving, the view can be used to check your trailer hitch
        • Shifting to Park automatically engages the Electric Parking Brake (if equipped)
        • May require additional optional equipment
      • Interior Camera:
        • Requires a future software update
      • LATCH System:
        • Lower Anchors and Tethers for CHildren system helps make it easy to install and secure a compatible child restraint seat
      • Lane Keep Assist with Lane Departure Warning, enhanced:
        • Uses a brief steering wheel turn to alert you when it detects you are unintentionally drifting out of your lane lines1
        • System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
        • You may receive additional Lane Departure Warning alerts if needed
      • OnStar Basics:
        • Drive confidently with core OnStar services including1
          • Remote commands
          • Built-in voice assistance
          • Real-time traffic and navigation
          • Automatic Crash Response
      • OnStar® services capable:
        • See onstar.com for details and limitations. Services vary by model. Service plan required.
      • Rear Cross Traffic Braking:
        • When in Reverse, alerts you or automatically provides hard emergency braking to prevent a collision with detected vehicles crossing behind you1
      • Rear Pedestrian Alert:
        • When you're in Reverse, alerts you to detected pedestrians directly behind your vehicle1
        • Limited nighttime and low visibility performance
      • Rear Seat Reminder:
        • Helps to remind the driver to check the back seat(s) before leaving the vehicle1
        • Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is on
        • Under certain conditions, once the vehicle is switched off, designed to sound audible chimes and display a visual message within the driver display
        • Activates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
      • Rear child security door locks:
        • When activated, prevents passengers from opening the rear doors from inside the vehicle
      • Reverse Automatic Braking:
        • Alerts you and/or automatically provides hard emergency braking when in Reverse1
        • Can help avoid collisions with detected vehicles and objects directly behind you
      • Side Bicyclist Alert:
        • Alerts you to a detected bicyclist that is approaching a side blind zone1
        • During a brief time after parking, the feature can alert you when a detected bicyclist is approaching so you don't open your door
      • Teen Driver:
        • Helps encourage safe driving habits for teens by providing an in-vehicle report card1
        • Activates certain safety systems, if equipped, when a Teen Driver-designated key fob is used
        • Mutes the radio until the front-seat occupants fasten their seat belts
      • Tire Pressure Monitoring System:
        • Monitors the pressure in each tire and alerts you if there is a low-pressure condition in one or more of the tires1
        • Includes Tire Fill Alert1
      • Traffic Sign Recognition:
        • Can display detected speed limit signs in your instrument cluster1
        • Can also chime when you may be speeding, or a new speed limit sign is detected
      • Trailering assist guidelines:
        • Allows the customer to see a view of what is behind the trailer1
        • Provides guidance when backing the trailer to achieve the desired path1
        • May require additional optional equipment
      • Trailering camera provisions:
        • Includes connector for accessory wiring harness
        • May require additional optional equipment
      • Enhanced Automatic Emergency Braking:
        • Can help you avoid or reduce the severity of collisions with a detected vehicle you're following1
        • Radar and camera technology are used to automatically provide hard emergency braking or enhance the driver's hard braking
        • Works at speeds above 2 mph
      • Intersection Automatic Emergency Braking:
        • Can help you avoid or reduce the severity of an intersection collision with a detected cross-traffic vehicle1
        • Can automatically provide hard emergency braking or enhance your hard braking
      • StabiliTrak, electronic stability control system with traction control:
        • Automatically helps enhance control, particularly during emergency maneuvers, by adjusting the brakes and engine torque to help you stay on your intended path
        • Activates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travelling
        • Includes Traction Control that detects wheel slippage and applies brake pressure and/or reduces engine power to help the driver maintain control when accelerating on wet or snow-covered roads
        • Includes Brake Assist that senses how hard and fast a driver hits the brake pedal and gives extra braking assistance, if required
      • Trailer sway control:
        • Helps prevent trailer sway by monitoring driver steering input and then automatically applying the trailer brakes
      KEY FEATURES INCLUDE
      Leather Seats, Third Row Seat, DVD, 4x4, Power Liftgate. GMC AT4 with Summit White exterior and Forest Storm with Mahogany Accents interior features a Straight 6 Cylinder Engine with 305 HP at 3750 RPM*.

      OPTION PACKAGES
      AT4 PREMIUM PLUS PACKAGE: includes (RGM) AT4 Premium Package content, (NHT) Max Trailering Package content, (Z6E) Premium Capability Package with Active Response 4WD content, (ZM1) Enhanced Trailering Technology Package content and (UW9) Rear Seat Media System (Includes (UKL) Super Cruise when (LZ0) 3.0L Turbo-Diesel engine is ordered. AT4 PREMIUM PACKAGE includes (CWM) Technology Package, (C3U) Panoramic power sunroof and (B3L) power-retractable assist steps with perimeter lighting, TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Head-Up Display (Also includes (NWM) Advanced Security Package content, (ATN) second row power bucket seats and (DCH) power-sliding center console. LPO, ILLUMINATION PACKAGE: includes (S3I) Illuminated mirror GMC emblem, LPO, (S0M) Illuminated door sill plates, LPO and (5RU) Illuminated cargo sill plate, LPO (dealer-installed), ENGINE, DURAMAX 3.0L TURBO-DIESEL (305 hp [227 kW] @ 3750 rpm, 495 lb-ft of torque [671 Nm] @ 2750 rpm), LPO, FLOOR LINER PACKAGE (dealer-installed) (Includes (RIA) 1st and 2nd row all-weather floor liners, LPO, (RIB) 3rd row all-weather floor liners, LPO and (CAV) all-weather cargo mat, LPO. SUSPENSION, AIR RIDE ADAPTIVE, TRANSMISSION, 10-SPEED AUTOMATIC electronically controlled with overdrive, includes Traction Select System including tow/haul, MAX TRAILERING PACKAGE includes (UKW) Blind Zone Steering Assist with Trailering, (PZ8) Hitch View, (UET) Smart Trailer Integration Indicator, (JL1) integrated trailer brake controller and (V03) extra capacity cooling system, ADVANCED SECURITY PACKAGE includes (UTR) self-powered horn, (UTV) interior movement sensors, (UTU) vehicle inclination sensors, (UTW) glass break sensors in rear quarter glass and liftgate window and door and liftgate lock shields, AUDIO SYSTEM, 16.8" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM with high contrast display and local backlight dimming, with Google built-in compatibility, including navigation capability, color touch-screen, multi-touch display, connected apps, personalized profiles for each driver's settings, and Natural Voice Recognition (STD), PREMIUM CAPABILITY PACKAGE WITH ACTIVE RESPONSE 4WD includes (F47) Air Ride Adaptive suspension and (G96) electronic limited-slip differential.

      WHY BUY FROM US
      Family owned and operated, Hertrich Buick-GMC has been your Delmarva GMC dealer since 1964! We are located in the heart of the Delmarva Peninsula at 26953 Sussex Highway, Seaford, Delaware and serve as your Buick-GMC dealer with a state of the art GM Certified Sales & Service Department. As your gateway to the best buying experience you will ever have, we at Hertrich Buick-GMC know that price is important that's why we will beat out the competition time and time again with our aggressive pricing.

      Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.

      Peace of mind

      A name you can trust

      Hertrich GMC of Easton is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
      More about us

      KBB.com Consumer Reviews

      Kelley Blue Book Logo3.6out of 5 overall
      • 5.0

        Best Vehicle I've Owned

        by PC Burger on 4/15/2026 8:22:37 PM

        Bought a White Diamond color Denali which has exceeded my expectations. Premium materials throughout, especially seats. The mileage has also exceeded my expectations, have experienced a mileage highway best of 25 mpg, normal highway is 21-22 mpg. My combined is 18 mpg, and I burn regular fuel. Premium is 'recommended', not required.......and I burn that when I tow my boat or jet skiis. Warranty is not affected by this. Ride and Handling is supreme. Safety equipment makes the drivability a super experience.…
      • 5.0

        Favorite vehicle we’ve owned

        by Smorehead on 8/15/2025 12:50:43 AM

        We have owned ours for three years now. We built ours through the local dealer and got everything we asked for. Great fuel economy considering the size and great quality throughout. The interior is very comfortable and well made. We’ve never had an issue other than a couple recalls that have been taken care of by the dealership immediately. We are constantly on the road with our daughter as she plays travel volleyball and there’s plenty of room for all of her things and she can chill in the third row comfortably. Most of the trips are 4 hours one way and on the highway we see around 21-22MPG. Very happy with this vehicle and with the comfort of the 100k warranty we purchased I feel we will be well into the 6 figure mileage range before we make another purchase!…
      • 5.0

        Love this truck

        by Susannah on 10/13/2024 12:07:43 PM

        I've been looking for a new truck for a few months.I couldn't decide on what I wanted,then I found this Denali.It is gorgeous. I love everything from the interior to the smooth ride.very happy with my purchase.…
      All reviews on KBB.com
      Based on 18 consumer ratings for 2021–2026 models. Privacy
        Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

        1Dealer Discount applied to everyone