2026 GMC Yukon XL AT4 Ultimate

  • New
$104,685MSRP
$102,860Sale Price
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Finance Terms
Brennan Buick GMC
Location Details
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Obsidian Rush with Red Accents, Full grain leather
    Fuel Economy
    14/18 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    6.2L V8 engine
    VIN
    1GKS2WKL8TR448858
    Stock Number
    260339
      • 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 & 6.6L 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 & 6.6L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
      • Warranty: <<< Preliminary 2026 Warranty >>>
      • Max seating capacity: 7
      • Fuel System: Direct Injection
      • Fuel tank capacity: 28 gal
      • Horsepower: 420
      • Towing capacity: 7800 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 Performance Series CenterPoint® Surround 18-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
        • Includes driver and front passenger stainless-steel Bose headrest speakers
      • 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 Talos Bronze 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
      • 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" diagonal rear touchscreen climate control:
        • Located on back of center console
        • Includes heated seat controls on AT4 Ultimate and Denali Ultimate
        • Includes heated seat, ventilated seat and massage controls on Denali Ultimate with Executive Second Row Seating Package
      • 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
      • 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 2-way power upper shoulder and 2-way power back bolster seats
      • 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
      • 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
      • Leather-wrapped steering wheel:
        • 4-spoke steering wheel offers a secure, comfortable grip
        • Includes controls for audio, phone, voice recognition and cruise control
      • 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 driver and front passenger massage:
        • Helps you stay comfortable and energized, especially during long drives
        • Switch the optional massage feature on and off
        • Includes massage settings with varying intensities and patterns to help customize the experience
      • 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
      • Sport Pedal Cover Kit:
        • Designed to enhance the interior appearance of your vehicle
        • Brushed, polished metal with raised rubber traction surfaces
        • Includes covers for accelerator and brake pedal
      • 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
      • 10-speed automatic transmission:
        • Electronically controlled with overdrive
        • Includes Traction Select System including tow/haul
      • 220-amp alternator
      • 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
      • 6.2L V8 engine:
        • 420 hp @ 5600 rpm
        • 460 lb-ft of torque @ 4100 rpm
        • Dynamic Fuel Management technology
        • Aluminum block, Direct Injection with Variable Valve Timing
        • Paired with a 10-speed automatic transmission
      • 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
      • Enhanced Cooling Radiator:
        • Helps maintain optimal performance
        • May require additional optional equipment
      • 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 730 cold-cranking amps battery:
        • Maintenance-free with rundown protection and retained accessory power
      • 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
      • 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
      • Advanced Technology Package:
        • Super Cruise driver assistance technology1
        • Rear Camera Mirror2
        • Rear Seat Media System
        • Advanced Security Package
        • Max Trailering Package
        • 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
      • 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
      • 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 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 objects
        • You can also display a guideline to show where your vehicle is heading
      • 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
      • OnStar Basics:
        • Drive confidently with core OnStar services including1
          • Remote commands
          • Built-in voice assistance
          • Real-time traffic and navigation
          • Automatic Crash Response to help if you're in need
      • 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
      • 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
      At Brennan Buick GMC, we're here for you throughout the life of your vehicle. If you're in the market for a new or used truck, SUV, or car, visit our dealership to see the best that Brennan Buick GMC has to offer.

      - 18 Speakers with Bose 360L Surround Sound
      - 16.8 Premium GMC Infotainment System with Apple CarPlay/Android Auto
      - Super Cruise Hands-Free Driving Technology
      - Air Ride Adaptive Suspension with Magnetic Ride Control
      - Dual-Pane Panoramic Power Sunroof
      - Full Grain Leather Heated and Ventilated Seats with Massage Function
      - Advanced Security Package and Premium Capability Package with Active Response 4WD
      - Max Trailering Package with Integrated Trailer Brake Controller
      - 15 Head-Up Display
      - Power-Retractable Assist Steps
      - Rear Seat Media System with 8 Touchscreen
      - All-Weather Floor Liners for All Three Rows
      - Navigation System with GMC Connected Services
      - OnStar with 3 Years Service Included
      - 20 Machined and Painted Alloy Wheels

      This 2026 GMC Yukon XL AT4 Ultimate represents a commanding presence on the road. Built with an EcoTec3 6.2L V8 engine paired with a 10-speed automatic transmission, this full-size SUV delivers the capability you need for any journey. The 4WD system ensures confident handling across all road conditions, while the exceptional towing package makes this vehicle ready for serious work.

      The interior craftsmanship reflects the Ultimate designation throughout every detail. Full grain leather seating across all rows provides comfort for your entire family, with heated and ventilated front seats featuring massage functionality. The power-adjustable lumbar support in the driver and front passenger seats ensures proper support on long drives, while heated rear seats extend comfort to back-row passengers.

      Technology seamlessly integrates into your daily driving experience. The 16.8-inch premium infotainment system offers intuitive control, while Apple CarPlay and Android Auto keep you connected. The Rear Seat Media System with its own 8-inch touchscreen entertains passengers independently. Super Cruise hands-free driving technology takes the strain out of highway miles, and the comprehensive 15-inch head-up display keeps vital information in your line of sight.

      Entertainment reaches premium levels with an 18-speaker Bose system featuring 360L surround sound, complemented by SiriusXM satellite radio access. The panoramic sunroof floods the cabin with natural light, enhancing the spacious feel of this three-row design. Navigation and OnStar connected services, included for three years, provide security and navigation assistance whenever you need it.

      Capability matches the SUV's impressive stature. The Max Trailering Package equips this Yukon XL with an integrated trailer brake controller, smart trailer integration, and hitch view technology. The Air Ride Adaptive Suspension with electronic limited slip differential and active response 4WD adjusts to road conditions automatically, while hill descent control manages steep terrain with precision.

      Safety features work together to protect all occupants. The advanced security package combines multiple airbags, electronic stability control, and traction control. The blind zone steering assist helps monitor areas that mirrors cannot fully see, particularly useful when trailering. Driver attention assist technology maintains vigilance during long drives.

      The distinctive black exterior paired with 20-inch machined and painted alloy wheels establishes strong visual presence, while body-color door handles and bright sill plates add refined touches. The dual exhaust system and front fog lights complete the premium AT4 Ultimate appearance that commands respect wherever this SUV travels.

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      Peace of mind

      Optional add-on protection

      • GAP Protection
      • Lifetime Powertrain
      • Tires and Wheels
      • Paint Protection

      A name you can trust

      Brennan Buick GMC 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

        Excellent Machine, Safety Features are Excessive

        by BenInKentucky on 7/14/2026 10:14:58 PM

        First, get the diesel. This is our 3rd diesel Yukon and they are amazing. Great mileage, great resale value, plenty of horse power, and the range for one tank of fuel can be very convenient on long road trips. The extra room in the XL model is also convenient for luggage if you have a large family and enjoy the ability to see out the back windows. The 10 speed transmission is smooth and it will glide down the interstate at any speed with ease at very low engine RPM. The only real downside to this vehicle are the overbearing safety features. If I look over at the navigation screen it vibrates the seat and tells me I am distracted. The auto-cruise (self-driving) feature will randomly hit the breaks in the middle of the highway. The backup camera will slam on the breaks if it sees any movement behind the vehicle even if it is way out of range. The back hatch opens automatically if you walk past it with the key in your pocket. If I lean too far on to the center console it will vibrate the seat and tell me I am distracted. We use this vehicle on the farm and there is no way to disable the seat belt alarm. We spent about an hour going through all of the settings and were able to disable most of the annoying features. I find putting a business card in front of the camera that looks at my face cures many of these frustrations and I may opt for a more permanent piece of black electrical tape that will blend in seamlessly. The auto stop feature is also frustrating but like the EPA gas cans I believe most of America is dealing with this frustration and it is not limited to this vehicle. Overall, we love the vehicle and will buy another one.…
      • 5.0

        No Problems Yet

        by CoachTroy72 on 6/17/2026 11:26:04 PM

        I got my 26 Yukon Denali SUV with 3 miles on it. Got to 308 and had engine knock. Took it to Classic GMC, they had it a week. Flushed out the engine debris, no knocking. Also they changed the oil. Not from 0-20w to 40w, but just changed it with the same OEM AC Delco standard Dexos, no more knocking. Now at 1238 miles havent had any issues. Actually getting 22.3 MPG! For a truck that is 17 city 20 Hwy..…
      • 5.0

        Love everything about my Elevation, except…

        by Carol Ann on 6/3/2026 5:57:12 PM

        This truck has excellent get up and go power, great traction control and steering, with an impressive turning radius, love the large dash display screen, sleek design inside and out, and the suspension makes for comfortable long highway and city driving. Surrounded in cool luxury, state of the art sound system while feeling like a VIP in my classy black FBI looking whip.…
      All reviews on KBB.com
      Based on 22 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