Used 2021 GMC Yukon XL SLT 4WD for SaleNationwide
153 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:
- Midnight Blue Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 94,007
- Stock #:
- 26234B
- VIN:
- 1GKS2GKD7MR478126
2021 GMC Yukon XL
SLT 4WD
94,007 mi
Sellersburg, IN
Fair Deal
$38,261
- 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:
- Dark Walnut/Slate
- Mileage:
- 82,749
- Stock #:
- L315150
- VIN:
- 1GKS2GKD1MR315150
2021 GMC Yukon XL
SLT 4WD
82,749 mi
Longmont, CO
Good Deal
$39,101
- 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:
- Dark Walnut/Slate
- Mileage:
- 142,720
- Stock #:
- S164485A
- VIN:
- 1GKS2GKDXMR152692
Price drop
-$2,883
2021 GMC Yukon XL
SLT 4WD
142,720 mi
Tamarac, FL
Great Deal
$27,373
$26,575
- 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:
- 139,802
- Stock #:
- P4520A
- VIN:
- 1GKS2GKD0MR336474
Price drop
-$1,082
2021 GMC Yukon XL
SLT 4WD
139,802 mi
Blair, NE
Good Deal
$31,547
$30,465
- 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:
- White Frost Tricoat
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 83,726
- Stock #:
- T1139
- VIN:
- 1GKS2GKD1MR412641
2021 GMC Yukon XL
SLT 4WD
83,726 mi
Great Falls, MT
Good Deal
$39,556
- 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:
- Blue
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 122,507
- Stock #:
- 8562331A
- VIN:
- 1GKS2GKD1MR247867
Price drop
-$3,288
2021 GMC Yukon XL
SLT 4WD
122,507 mi
Tampa, FL
Good Deal
$34,198
$32,995
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Onyx Black
- Fuel type:
- Diesel
- Mileage:
- 110,526
- Stock #:
- 107966A
- VIN:
- 1GKS2GKT6MR405952
New arrival
2021 GMC Yukon XL
SLT 4WD
110,526 mi
Watertown, SD
Good Deal
$36,247
- Year:
- 2021
- Make:
- GMC
- Model:
- Yukon XL
- Body type:
- SUV / Crossover
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Brown (Pearl Beige Metallic)
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Diesel
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 92,578
- Stock #:
- R150085A
- VIN:
- 1GKS2GKT8MR329280
2021 GMC Yukon XL
SLT 4WD
92,578 mi
Mobile, AL
Good Deal
$38,788
- 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
Price drop
-$1,797
2021 GMC Yukon XL
SLT 4WD
81,512 mi
Eatontown, NJ
Good Deal
$37,854
$36,856
- 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
Price drop
-$1,236
2021 GMC Yukon XL
SLT 4WD
124,386 mi
Grand Junction, CO
Good Deal
$32,941
$31,705
- 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
Good Deal
$31,125
- 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:
- 51,925
- Stock #:
- TT0374A
- VIN:
- 1GKS2GKD0MR444514
2021 GMC Yukon XL
SLT 4WD
51,925 mi
Westlake, OH
Good Deal
$42,981
- 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:
- 81,375
- Stock #:
- 550221A
- VIN:
- 1GKS2GKD8MR438217
New arrival
2021 GMC Yukon XL
SLT 4WD
81,375 mi
Williston, ND
Fair Deal
$41,387
- 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:
- 70,274
- Stock #:
- 56767A
- VIN:
- 1GKS2GKD2MR407366
2021 GMC Yukon XL
SLT 4WD
70,274 mi
Pasadena, CA
Good Deal
$39,702
- 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:
- 71,114
- Stock #:
- 104155
- VIN:
- 1GKS2GKD8MR439996
New arrival
2021 GMC Yukon XL
SLT 4WD
71,114 mi
Hendersonville, TN
Good Deal
$40,696
- 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:
- 25,444
- Stock #:
- GGO355241
- VIN:
- 1GKS2GKD6MR355241
New arrival
2021 GMC Yukon XL
SLT 4WD
25,444 mi
Hampstead, MD
Great Deal
$44,298
- 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:
- 110,654
- Stock #:
- 406707
- VIN:
- 1GKS2GKD8MR406707
2021 GMC Yukon XL
SLT 4WD
110,654 mi
Muscatine, IA
Fair Deal
$34,675
- 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)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 106,107
- Stock #:
- MR157827
- VIN:
- 1GKS2GKDXMR157827
2021 GMC Yukon XL
SLT 4WD
106,107 mi
Bluffton, SC
Fair Deal
$37,337
- 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:
- 70,124
- Stock #:
- 41688
- VIN:
- 1GKS2GKD8MR470150
New arrival
2021 GMC Yukon XL
SLT 4WD
70,124 mi
Leavenworth, KS
Good Deal
$40,980
- 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:
- 137,325
- Stock #:
- 26D206A
- VIN:
- 1GKS2GKD8MR212419
Price drop
-$991
2021 GMC Yukon XL
SLT 4WD
137,325 mi
Lewiston, ID
Good Deal
$31,187
$30,196
- 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)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 106,647
- Stock #:
- 401013A
- VIN:
- 1GKS2GKD5MR401013
Price drop
-$1,205
2021 GMC Yukon XL
SLT 4WD
106,647 mi
Alexandria, MN
Good Deal
$35,630
$34,425
- 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:
- 91,260
- Stock #:
- MR150378
- VIN:
- 1GKS2GKD5MR150378
2021 GMC Yukon XL
SLT 4WD
91,260 mi
Windham, ME
Fair Deal
$38,135
- 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
- Fuel type:
- Gasoline
- Interior color:
- Black
- Mileage:
- 94,055
- Stock #:
- 450738
- VIN:
- 1GKS2GKD8MR450738
2021 GMC Yukon XL
SLT 4WD
94,055 mi
Atlantic Highlands, NJ
Good Deal
$33,919
- 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 (Pearl Beige Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 75,754
- Stock #:
- H00454A
- VIN:
- 1GKS2GKD6MR383752
2021 GMC Yukon XL
SLT 4WD
75,754 mi
Tacoma, WA
Good Deal
$40,191
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 $39,133.27. The average price has decreased by -9.2% since last year. The 1273 for sale on CarGurus range from $2,480 to $73,428 in price.
How many GMC Yukon XL SLT 4WD vehicles have no reported accidents or damage?
910 out of 1273 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.
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