2021 GMC Yukon XL AT4
- Used
$49,900Our Price
$51,590Price After Fees
The overview
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Odometer
- 59,648 miles
- Fuel Economy
- 15/19 MPG City/Hwy
- Transmission
- 10-Speed Automatic with Overdrive
- Drivetrain
- 4WD
- Engine
- EcoTec3 5.3L V8
- VIN
- 1GKS2HKD4MR266659
- Stock Number
- 266659S
The highlights
- 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
The full 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
Notes from the dealer
2021 GMC Yukon XL AT4 For Sale in Pompano Beach, Florida Luxury 4WD SUV Factory Options & Features Include: AT4 Off-Road Package EcoTec3 5.3L V8 Engine 355 Horsepower 383 lb-ft Torque 10-Speed Automatic Transmission Four Wheel Drive System Black Exterior Black Interior Third Row Seating Power Panoramic Sunroof Navigation System Apple CarPlay & Android Auto Bose Premium Audio System Heated Front & Rear Seats Ventilated Front Seats Heated Steering Wheel Power Liftgate Remote Start Push Button Start Wireless Phone Charging Backup Camera HD Surround Vision Camera Front & Rear Parking Sensors Blind Spot Monitoring Lane Keep Assist Adaptive Cruise Control Premium AT4 Wheels Off-Road Suspension Hill Descent Control Skid Plates Tri-Zone Automatic Climate Control Looking for a 2021 GMC Yukon XL AT4 for sale in Florida? This beautiful Black 2021 GMC Yukon XL AT4 is now available at Sienna Motors in Pompano Beach, Florida. With only 59,648 miles, this full-size luxury SUV delivers exceptional capability, premium comfort, advanced technology, and legendary GMC performance. Powered by the dependable 5.3L EcoTec3 V8 engine producing 355 horsepower and 383 lb-ft of torque, paired with a 10-Speed Automatic Transmission and Four-Wheel Drive, this Yukon XL AT4 offers outstanding towing capability, confident off-road performance, and a smooth ride for the entire family. Finished in a stunning Black exterior over a premium Black Interior, this Yukon XL AT4 combines aggressive styling with refined luxury. The extended wheelbase provides exceptional passenger comfort, generous third-row seating, and one of the largest cargo areas available in a luxury SUV. Features Include: AT4 Off-Road Package Navigation System Apple CarPlay & Android Auto Bose Premium Audio System Power Panoramic Sunroof Heated & Ventilated Front Seats Heated Rear Seats Wireless Phone Charging Remote Start HD Surround Vision Camera Blind Spot Monitoring Lane Keep Assist Adaptive Cruise Control Power Liftgate Premium AT4 Wheels Off-Road Suspension The GMC Yukon XL AT4 is one of the most desirable full-size SUVs on the market, offering premium luxury, exceptional towing capability, advanced technology, and true off-road performance. Whether you're transporting the family, towing your boat, or heading out on your next adventure, this Yukon XL is built to do it all. This Yukon XL AT4 has been fully inspected and is ready for its next owner. Whether you're looking for a luxury family SUV, executive vehicle, road trip cruiser, or capable off-road SUV, this GMC delivers comfort, capability, and style in every mile. Why Buy From Sienna Motors? All vehicles fully inspected We work with all major banks and credit unions Financing available for Good Credit, Bad Credit & First-Time Buyers Trade-ins welcome Extended warranty options available Nationwide shipping available Luxury and performance vehicle specialists If you're searching for a 2021 GMC Yukon XL AT4 for sale near Miami, Fort Lauderdale, Boca Raton, Delray Beach, West Palm Beach, Coral Springs, Hollywood, or anywhere in South Florida, this Yukon XL is a must-see. Contact Sienna Motors today to schedule your test drive or apply for financing. Keywords: 2021 GMC Yukon XL AT4 for sale, GMC Yukon XL Florida, Yukon AT4 for sale, luxury SUV South Florida, GMC Yukon near Miami, Yukon XL 4WD, GMC Yukon XL financing, full-size SUV for sale, GMC dealer Pompano Beach, Yukon XL AT4 black, third row SUV Florida, GMC Yukon XL towing
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
Sienna is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
3.6out 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.
The advertised price does not include sales tax, vehicle registration fees, finance charges. It does include documentation charges, $695 Electronic Filling Fee, private tag Agency Fee, $995 Dealer Fee (Sienna Motors) $1295 (Sienna Collection) $988 Electronic Filling Fee (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.