Vehicle Details
Elevate every drive in this pre-owned 2021 GMC Yukon XL AT4, a bold and capable full-size SUV now available in Breaux Bridge, LA. Powered by a proven V8 5.3L gasoline engine and equipped with 4WD, this GMC Yukon XL is ready for family road trips, towing duties, weekend adventures, and daily commutes with confidence. The AT4 trim adds a rugged, premium look and feel, making this SUV stand out wherever it goes. Inside, you'll find a spacious cabin designed for comfort, convenience, and versatility. Stay connected on the road with Hands Free Bluetooth and Android Auto, while advanced safety technology helps support your peace of mind. Features like Lane Departure Warning and Cross-Traffic Alert provide added awareness in busy traffic, parking lots, and on the highway. This GMC Yukon XL also comes with a CARFAX Clean Report, giving you extra confidence in its history and care. With its large interior, refined styling, and strong performance, this GMC is an excellent choice for drivers who want capability without compromising comfort. If you're searching for a dependable pre-owned SUV with V8 power, 4WD traction, and modern tech, this 2021 GMC Yukon XL AT4 in Breaux Bridge, LA deserves a closer look. Schedule your test drive today and experience the impressive presence, space, and versatility this SUV has to offer.
Equipment
This 2021 GMC Yukon XL stays safely in its lane with Lane Keep Assist. This unit's Lane Departure Warning helps keep you in your lane. This 2021 GMC Yukon XL features a hands-free Bluetooth phone system. The installed navigation system will keep you on the right path. Protect the vehicle from unwanted accidents with a cutting edge backup camera system. Apple CarPlay: Seamless smartphone integration for the vehicle - stay connected and entertained on the go! The leather seats in this 1/2 ton suv are a must for buyers looking for comfort, durability, and style. This vehicle warns of approaching vehicles with Cross-Traffic Alert. Our dealership has already run the CARFAX report and it is clean. A clean CARFAX is a great asset for resale value in the future. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this 1/2 ton suv. Anywhere on the planet, you will have hundreds of digital stations to choose from.
Packages
AT4 Premium Package: Dual-Pane Panoramic Power Sunroof; Power-Retractable Assist Steps. Technology Package: HD Surround Vision; 15 Diagonal Multi-Color Head-Up Display; Rear Pedestrian Alert. Preferred Equipment Group 4SB: Bright Front and Rear Door Sill Plates; Power Release 2nd Row 60/40 Split-Folding Bench Seat; 2 Presets For Outside Rearview Mirrors; 12-Way Power Seat Adjusters; 3rd Row 60/40 Power-Folding Split-Bench Seat; Safety Alert Seat; Hill Descent Control; Heavy-Duty Air Filter; Heated Automatic Steering Wheel; Heated Driver and Front Passenger Seats; Universal Home Remote; Heated 2nd Row Outboard Position Seats; Front Skid Plate; Front High-Approach Angle Fascia; Hands-Free Power Programmable Rear Liftgate; Bose 9-Speaker Stereo Audio System Feature; 2-Speed Electronic Autotrac Active Transfer Case; GMC Pro Safety Plus; Red Horizontal-Mounted Recovery Hooks; Heated and Ventilated Driver and Front Passenger Seats; Power Tilt and Telescopic Steering Column; Black Roof-Mounted Luggage Rack Side Rails; 275/60R20SL AT BW Tires; Magnetic Ride Control Suspension; Inside Rearview Auto-Dimming Mirror; Wheels: 20 X 9 6-Spoke Machined Aluminum; Outside Heated Power-Adjustable Mirrors. Rear Media and Navigation Package: Rear Seat Media System; AM/FM/SiriusXM Radio with Navigation. Power-Retractable Assist Steps. Dual-Pane Panoramic Power Sunroof. Onyx Black. Power Release 2nd Row Bucket Seats. Console-Mounted Safe. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
Used 2021 GMCYukon XL AT4
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black/Brandy
- Odometer
- 79,768 miles
- Fuel Economy
- 15/19 MPG City/Hwy
- Transmission
- 10-speed automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GKS2HKDXMR420789
- Stock Number
- PBT2535
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
- AT4 Premium Package: Dual-Pane Panoramic Power Sunroof; Power-Retractable Assist Steps
- Technology Package: HD Surround Vision; 15 Diagonal Multi-Color Head-Up Display; Rear Pedestrian Alert
- Preferred Equipment Group 4SB: Bright Front and Rear Door Sill Plates; Power Release 2nd Row 60/40 Split-Folding Bench Seat; 2 Presets For Outside Rearview Mirrors; 12-Way Power Seat Adjusters; 3rd Row 60/40 Power-Folding Split-Bench Seat; Safety Alert Seat; Hill Descent Control; Heavy-Duty Air Filter; Heated Automatic Steering Wheel; Heated Driver and Front Passenger Seats; Universal Home Remote; Heated 2nd Row Outboard Position Seats; Front Skid Plate; Front High-Approach Angle Fascia; Hands-Free Power Programmable Rear Liftgate; Bose 9-Speaker Stereo Audio System Feature; 2-Speed Electronic Autotrac Active Transfer Case; GMC Pro Safety Plus; Red Horizontal-Mounted Recovery Hooks; Heated and Ventilated Driver and Front Passenger Seats; Power Tilt and Telescopic Steering Column; Black Roof-Mounted Luggage Rack Side Rails; 275/60R20SL AT BW Tires; Magnetic Ride Control Suspension; Inside Rearview Auto-Dimming Mirror; Wheels: 20 X 9 6-Spoke Machined Aluminum; Outside Heated Power-Adjustable Mirrors
- Rear Media and Navigation Package: Rear Seat Media System; AM/FM/SiriusXM Radio with Navigation
- Power-Retractable Assist Steps
- Dual-Pane Panoramic Power Sunroof
- Onyx Black
- Power Release 2nd Row Bucket Seats
- Console-Mounted Safe
- Apple CarPlay/Android Auto smart device wireless mirroring
- Automatic Emergency Braking forward collision mitigation
- Front Pedestrian Braking
- 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
- HD Rear Vision Camera rear mounted camera
- Lane Keep Assist with Lane Departure Warning
- Head-up display
- Brake assist system
- Cruise control with steering wheel mounted controls
- Power liftgate rear cargo door
- Ventilated driver and front passenger seats
- Integrated navigation system with voice activation
- Keyfob remote start
- Heated steering wheel
- Rear entertainment system with digital media player
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Primary monitor touchscreen
- Fixed third-row seats
- Rear Cross-Traffic Alert collision warning
- First and second-row sliding and tilting glass sunroof with express open/close activation sunshade
- Driver seat power reclining
- lumbar support
- cushion tilt
- fore/aft control and height adjustable control
- AutoTrac part and full-time 4WD
- EcoTec3 5.3L V-8 gasoline direct injection
- variable valve control
- regular unleaded
- engine with cylinder deactivation and 355HP
- EcoTec3 5.3L V-8
- Teen Driver restricted driving mode/alerts
- Rear Pedestrian Alert rear pedestrian detection warning
- Smart key with hands-free access and push button start
- HD Surround Vision aerial view camera
- Front windshield solar coating
- Smart device remote start
- Push-button
- Vehicle tracker with vehicle slowdown
- Bluetooth wireless audio streaming
- Vehicle to trailer hitching assist
- Proximity cargo area access release
- Front mounted camera
- Right side camera
- Left side camera
- Lane Change Alert with Side Blind Zone Alert blind spot warning
- Following Distance Indicator
- Dual-zone front climate control
- Rear climate control system with separate controls
- Magnetorheological shock absorbers
- IntelliBeam auto high-beam headlights
- Power fold into floor third-row seat
- Immobilizer
- Bose speakers
- OnStar and GMC connected services capable vehicle integrated emergency SOS system
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
KBB.com Consumer Reviews
- 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.