Used 2021 GMC Yukon XL SLT 4WD for SaleNationwide
137 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 122,847
- Stock #:
- 26J5919A
- VIN:
- 1GKS2GKD7MR153217
2021 GMC Yukon XL
SLT 4WD
122,847 mi
Roswell, NM
Good Deal
$33,971
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 164,864
- Stock #:
- G20101AT
- VIN:
- 1GKS2GKD6MR424364
2021 GMC Yukon XL
SLT 4WD
164,864 mi
Troy, OH
Good Deal
$28,398
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 51,765
- Stock #:
- TT0374A
- VIN:
- 1GKS2GKD0MR444514
Price drop
-$1,329
2021 GMC Yukon XL
SLT 4WD
51,765 mi
Westlake, OH
Good Deal
$45,610
$44,679
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 145,762
- Stock #:
- 26CS0626A
- VIN:
- 1GKS2GKD8MR425175
2021 GMC Yukon XL
SLT 4WD
145,762 mi
Roswell, NM
Good Deal
$31,078
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 115,188
- Stock #:
- 4467P
- VIN:
- 1GKS2GKD4MR256093
2021 GMC Yukon XL
SLT 4WD
115,188 mi
Willmar, MN
Good Deal
$34,350
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 90,236
- Stock #:
- T261216A
- VIN:
- 1GKS2GKDXMR233160
2021 GMC Yukon XL
SLT 4WD
90,236 mi
Depew, NY
Fair Deal
$39,465
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- JET BLACK
- Transmission:
- Automatic
- Mileage:
- 66,662
- Stock #:
- 488914A
- VIN:
- 1GKS2GKD5MR488914
2021 GMC Yukon XL
SLT 4WD
66,662 mi
Aransas Pass, TX
Great Deal
$40,987
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White Frost Tricoat
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 83,671
- Stock #:
- M568A
- VIN:
- 1GKS2GKD9MR454054
2021 GMC Yukon XL
SLT 4WD
83,671 mi
Fort Morgan, CO
Fair Deal
$43,243
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Mileage:
- 91,785
- Stock #:
- LFT54826B
- VIN:
- 1GKS2GKD0MR153494
New arrival
2021 GMC Yukon XL
SLT 4WD
91,785 mi
Lima, OH
Fair Deal
$38,689
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Mileage:
- 87,714
- Stock #:
- 26649A
- VIN:
- 1GKS2GKD3MR410437
2021 GMC Yukon XL
SLT 4WD
87,714 mi
Pulaski, WI
Good Deal
$39,494
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 82,176
- Stock #:
- GTMR151522
- VIN:
- 1GKS2GKD2MR151522
2021 GMC Yukon XL
SLT 4WD
82,176 mi
Westerville, OH
Good Deal
$39,443
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White Frost Tricoat
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 124,386
- Stock #:
- G2033A
- VIN:
- 1GKS2GKD8MR436922
2021 GMC Yukon XL
SLT 4WD
124,386 mi
Grand Junction, CO
Good Deal
$33,084
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Brown (BEIGE)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 68,318
- Stock #:
- 26GT506A
- VIN:
- 1GKS2GKD5MR450521
2021 GMC Yukon XL
SLT 4WD
68,318 mi
Winner, SD
Good Deal
$43,186
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Mileage:
- 130,994
- Stock #:
- D435047
- VIN:
- 1GKS2GKD5MR435047
2021 GMC Yukon XL
SLT 4WD
130,994 mi
Summerville, SC
Great Deal
$31,424
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Brown (Tan)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 87,352
- Stock #:
- 6N5320A
- VIN:
- 1GKS2GKD5MR421990
2021 GMC Yukon XL
SLT 4WD
87,352 mi
Cornelius, NC
Fair Deal
$41,091
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 116,384
- Stock #:
- C368461
- VIN:
- 1GKS2GKD8MR368461
2021 GMC Yukon XL
SLT 4WD
116,384 mi
Fredericksburg, VA
Great Deal
$32,295
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 93,766
- Stock #:
- 146071
- VIN:
- 1GKS2GKD3MR146071
Price drop
-$1,100
2021 GMC Yukon XL
SLT 4WD
93,766 mi
Staten Island, NY
Good Deal
$38,075
$36,975
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Cayenne Red Tintcoat
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 67,337
- Stock #:
- G26228A
- VIN:
- 1GKS2GKD8MR441103
2021 GMC Yukon XL
SLT 4WD
67,337 mi
Brattleboro, VT
Great Deal
$40,640
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 107,000
- Stock #:
- T485741
- VIN:
- 1GKS2GKD7MR485741
2021 GMC Yukon XL
SLT 4WD
107,000 mi
Wesley Chapel, FL
Good Deal
$35,493
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 170,698
- Stock #:
- R249125T
- VIN:
- 1GKS2GKD0MR249125
Price drop
-$500
2021 GMC Yukon XL
SLT 4WD
170,698 mi
Corydon, IN
Great Deal
$24,500
$24,000
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Midnight Blue Metallic
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 81,512
- Stock #:
- R309620A
- VIN:
- 1GKS2GKD4MR309620
2021 GMC Yukon XL
SLT 4WD
81,512 mi
Eatontown, NJ
Good Deal
$39,195
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 82,793
- Stock #:
- C7334
- VIN:
- 1GKS2GKD1MR442044
2021 GMC Yukon XL
SLT 4WD
82,793 mi
Rome, GA
Good Deal
$41,681
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Cayenne Red
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 145,789
- Stock #:
- MR149083
- VIN:
- 1GKS2GKD3MR149083
2021 GMC Yukon XL
SLT 4WD
145,789 mi
Hot Springs National Park, AR
Fair Deal
$32,117
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Brown (Tan)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 95,687
- Stock #:
- 4G2796T
- VIN:
- 1GKS2GKD0MR453388
New arrival
2021 GMC Yukon XL
SLT 4WD
95,687 mi
Bloomington, MN
Fair Deal
$39,348
5.0 Overall rating
Filter by rating
Michael S
Reviewed a 2021 GMC SLT 4WD on Apr 26, 2026
Getting the diesel was the best decision! Far superior to the gasoline engine options.
Is this review helpful?
FAQs
How much does the GMC Yukon XL SLT 4WD cost?
The average GMC Yukon XL SLT 4WD costs about $40,181.36. The average price has decreased by -7.9% since last year. The 1231 for sale on CarGurus range from $3,037 to $67,995 in price.
How many GMC Yukon XL SLT 4WD vehicles have no reported accidents or damage?
915 out of 1231 for sale have no reported accidents or damage.
What is the fuel economy of the GMC Yukon XL SLT 4WD?
Depending on the engine and options, the GMC Yukon XL SLT 4WD gets between 16 and 22 MPG/MPGe.
What fuel types are available?
Diesel, Flex Fuel Vehicle, Gasoline engines are available.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
Relevant articles
CarGurus Editorial Team
The Best Cars for Tall People in 2026
Searching for vehicles best suited for tall people? Keep reading to find out which cars, trucks, and SUVs best accommodate those with a higher stature, as recommended by the experts at CarGurus.
Jeremy Korzeniewski
GMC Yukon XL Buying Guide: Cost, Reliability, and the Best Years to Buy
Discover the ultimate buying guide for purchasing a used GMC Yukon XL, covering each generation since 2000. Whether you're a first-time buyer or a General Motors enthusiast, this comprehensive overview will help you research your next pre-owned GMC Yukon XL.
Chris Teague
2026 GMC Yukon XL Pricing, Specs, and Release Date
Existing as a stretched version of the Yukon, the 2026 GMC Yukon XL shares its architecture with the Chevrolet Suburban. It offers seating for up to eight passengers and can tow up to 8,400 pounds.
All Used CarsManual Transmission CarsLuxury CarsCars with Red InteriorCheap Manual CarsHybrid CarsSports CarsElectric SUVsCheap TrucksSmall CarsThird Row SUVsThree Quarter Ton TrucksLifted TrucksManual Transmission TrucksDiesel TrucksHybrid SUVsDually TrucksOne Ton TrucksCheap SUVsLifted Ford Trucks4x4 TrucksWork TrucksAWD SUVsFord TrucksChevrolet TrucksToyota TrucksTrucks Under $10,000Cars Under $15,000Sports Cars Under $20,000Trucks Under $20,000Used Sedans for Sale with Low MileageUsed SUVs / Crossovers for Sale with Low MileageUsed Hatchbacks for Sale with Low MileageUsed Convertibles for Sale with Low MileageUsed Vans for Sale with Low MileageUsed Minivans for Sale with Low MileageUsed Pickup Trucks for Sale with Low MileageUsed Coupes for Sale with Low MileageUsed Wagons for Sale with Low Mileage
