Used 2021 GMCYukon XL AT4
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black/Brandy
- Odometer
- 59,648 miles
- Fuel Economy
- 15/19 MPG City/Hwy
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GKS2HKD4MR266659
- Stock Number
- 266659S
GMC
Yukon XL
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera rear
- Front dual zone A/C
- Auto high-beam headlights
- Rain sensing wipers
- Auto-dimming rearview mirror
- 3rd row seats
Included Packages & Accessories
Detailed Specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar Guidance
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear air conditioning
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob
- Remote keyless entry
- Speed control
- Steering wheel memory
- Telescoping steering wheel
- Tilt steering wheel
- Trunk/hatch auto-latch
- Adaptive suspension
- Alloy wheels
- Four wheel independent suspension
- Front anti-roll bar
- Front tires: 275/60SR20.0
- Power steering
- Rear anti-roll bar
- Rear tires: 275/60SR20.0
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 20"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Primary LCD size: 10.2"
- Smart device integration: Android Auto/Apple CarPlay
- Speaker type: Bose
- Speakers: 9
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless phone connectivity: Bluetooth
- 3rd row seats: split-bench
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather upholstery
- Power 4-way driver lumbar support
- Power 4-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats Folding position: tumble forward
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Compressor: Not Available
- Cylinder configuration: V-8
- Cylinder deactivation
- Drive type: four-wheel
- Engine liters: 5.3L
- Engine location: front
- Fuel economy city: 15mpg
- Fuel economy combined: 17mpg
- Fuel economy highway: 19mpg
- Fuel tank capacity: 28.0gal.
- Horsepower: 355hp @ 5,600RPM
- Hybrid traction battery type: none
- Manual-shift auto: Driver Shift Control
- Mode select transmission
- Number of valves: 16
- Recommended fuel: Regular Unleaded
- Standard fuel economy fuel type: gasoline
- Torque: 383 lb.-ft. @ 4,100RPM
- Transmission: 10 speed automatic
- Variable valve control
- Approach angle: 32 deg
- Departure angle: 20 deg
- Ground clearance (min): 203mm (8.0")
- Ramp breakover angle: 16 deg
- Auto-dimming door mirrors
- Bumpers: body-color
- Door mirrors: body-color
- Heated door mirrors
- Power door mirrors
- Power liftgate
- Rear cargo: power liftgate
- Skid plates
- Spoiler
- Trailer hitch receiver
- Trailer sway control
- Turn signal indicator mirrors
- 3rd row headroom: 970mm (38.2")
- 3rd row hiproom: 1,255mm (49.4")
- 3rd row legroom: 932mm (36.7")
- 3rd row shoulder room: 1,595mm (62.8")
- Compression ratio: 11.00 to 1
- Curb weight: 2,649kg (5,841lbs)
- Engine bore x stroke: 96.0mm x 92.0mm (3.78" x 3.62")
- Engine displacement: 5.3 L
- Engine horsepower: 355hp @ 5,600RPM
- Engine torque: 383 lb.-ft. @ 4,100RPM
- Exterior body width: 2,057mm (81.0")
- Exterior height: 1,943mm (76.5")
- Exterior length: 5,720mm (225.2")
- Front hiproom: 1,562mm (61.5")
- Front legroom: 1,130mm (44.5")
- Front shoulder room: 1,676mm (66.0")
- GVWR: 3,493kg (7,700lbs)
- Interior maximum rear cargo volume: 4,097 L (145 cu.ft.)
- Interior rear cargo volume: 1,175 L (41 cu.ft.)
- Payload: 770kg (1,698lbs)
- Rear hiproom: 1,557mm (61.3")
- Rear legroom: 1,067mm (42.0")
- Rear shoulder room: 1,646mm (64.8")
- Towing capacity: 3,402kg (7,500lbs)
- Turning radius: 6.6m (21.7')
- Wheelbase: 3,406mm (134.1")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Lane Change Alert with Side Blind Zone Alert warning
- Compass
- Delay-off headlights
- Exterior parking camera rear: HD Rear Vision Camera yes
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Keep Assist with Lane Departure Warning active
- Low tire pressure warning
- Outside temperature display
- Parking sensors: Front and Rear Park Assist front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Rear window wiper
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Automatic Emergency Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Tracker system
- Traction control
Dealer Notes
Introducing the 2021 GMC Yukon XL AT4, a masterpiece of automotive engineering designed to elevate your driving experience to unparalleled heights. With a commanding presence and an aura of sophistication, this magnificent SUV is ready to conquer the roads with style and power. If youâre seeking a vehicle that seamlessly combines luxury, performance, and versatility, look no further than this stunning Yukon XL AT4. With just 59,648 miles on the odometer, this Yukon XL AT4 has been meticulously maintained and is primed for many more adventures. Cloaked in a sleek black exterior, this SUV exudes an air of elegance and authority that turns heads wherever it goes. The bold and robust design is complemented by the AT4âs distinctive styling cues, making it a standout in any setting. Step inside, and youâll be greeted by a spacious and inviting black interior, where comfort meets functionality. While the exact material is unknown, rest assured that the interior is crafted with attention to detail, providing a luxurious environment for both driver and passengers. With ample room for family, friends, and cargo, the Yukon XL AT4 is perfect for road trips, daily commutes, or any adventure you can imagine. Under the hood lies the heart of this beastâ"a powerful EcoTec3 5.3L V8 engine that delivers an impressive 355 horsepower and 383 lb-ft of torque. This robust engine, paired with a 10-speed shiftable automatic transmission, ensures smooth and responsive performance, whether youâre cruising down the highway or tackling off-road trails. The AT4 trim is engineered for those who crave adventure, offering enhanced off-road capabilities without compromising on comfort or luxury. This Yukon XL AT4 is not just about power and prestige; itâs also about refinement. Awarded Kelley Blue Book's Brand Image Award for Most Refined Brand, GMC has crafted a vehicle that embodies sophistication in every detail. From its intuitive technology to its superior craftsmanship, every aspect of this SUV is designed to enhance your driving experience. Safety and convenience are paramount in the Yukon XL AT4. With a range of manufacturer options and packages, youâll enjoy features that make every journey safer and more enjoyable. While specific options are not listed, you can expect advanced safety technologies and premium amenities that GMC is renowned for, ensuring peace of mind on every drive. In summary, the 2021 GMC Yukon XL AT4 is more than just a vehicle; itâs a statement of style, power, and refinement. Whether youâre navigating city streets or exploring rugged terrains, this SUV is equipped to handle it all with confidence and grace. Donât miss the opportunity to own a vehicle that perfectly balances luxury with adventure. Visit us today to experience the Yukon XL AT4 for yourself and discover why itâs the ultimate choice for discerning drivers. Your dream SUV awaitsâ"get behind the wheel of the 2021 GMC Yukon XL AT4 and let the journey begin!
KBB.com Consumer Reviews

Overall3.6Out of 5
- 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.… - 5.0
Great condition
By Tammy | on 4/22/2026 4:05:09 PM
2 years left in warranty Great condition Beautiful Runs great Sterling metallic/teak light shale Diesel 3L…
All reviews on KBB.com
Based on 21 consumer ratings for 2021–2026 models. | Privacy
The advertised price does not include sales tax, vehicle registration fees, finance charges, documentation charges, $988 doc fee, private tag Agency Fee, $995 Dealer Fee (Sienna Motors) $1295 (Sienna Collection). This charge represents costs and profit to the dealer for items such as inspecting, cleaning, and adjusting vehicles, and preparing documents related to the sale), and any other fees required by law. We attempt to update this inventory on a regular basis. There can be lag time between the sale of a vehicle and the update of the inventory. Selling price that appears after dealer offers for informational purposes only. You may not qualify for the incentives, discounts, or financing. See dealer for details. Although we try to ensure all of our pricing and photos are correct, we are not responsible for any typographical or mechanical errors on this website. To ensure the information provided here is correct please contact our dealership directly and speak with a sales manager. The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets the final price.
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