Used 2021 GMC Yukon XL SLT 4WD for SaleNationwide
138 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:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Mileage:
- 58,438
- Stock #:
- 360819B
- VIN:
- 1GKS2GKD1MR155304
2021 GMC Yukon XL
SLT 4WD
58,438 mi
Snyder, TX
Good Deal
$43,564
- 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
Price drop
-$1,798
2021 GMC Yukon XL
SLT 4WD
164,864 mi
Troy, OH
Fair Deal
$30,298
$28,898
- 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:
- 115,097
- Stock #:
- 4467P
- VIN:
- 1GKS2GKD4MR256093
2021 GMC Yukon XL
SLT 4WD
115,097 mi
Willmar, MN
Good Deal
$35,350
- 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:
- 124,386
- Stock #:
- G2033A
- VIN:
- 1GKS2GKD8MR436922
2021 GMC Yukon XL
SLT 4WD
124,386 mi
Grand Junction, CO
Good Deal
$33,388
- 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
Great Deal
$30,060
- 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
Great 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:
- 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:
- 277 hp 3L I6 Diesel
- Exterior color:
- White
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 97,813
- Stock #:
- BFBTMR474806
- VIN:
- 1GKS2GKTXMR474806
2021 GMC Yukon XL
SLT 4WD
97,813 mi
Brownsburg, IN
Good Deal
$39,139
- 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:
- 119,082
- Stock #:
- 26W2508X
- VIN:
- 1GKS2GKD8MR420817
2021 GMC Yukon XL
SLT 4WD
119,082 mi
China, MI
Fair Deal
$35,809
- 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
$41,213
- 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:
- 51,175
- Stock #:
- 26PF309
- VIN:
- 1GKS2GKD7MR144422
2021 GMC Yukon XL
SLT 4WD
51,175 mi
Kalispell, MT
Good Deal
$46,277
- 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:
- 87,671
- Stock #:
- 26649A
- VIN:
- 1GKS2GKD3MR410437
New arrival
2021 GMC Yukon XL
SLT 4WD
87,671 mi
Pulaski, WI
Good Deal
$40,494
- 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:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Dark Walnut/Slate
- Mileage:
- 89,862
- Stock #:
- KBB10177
- VIN:
- 1GKS2GKD5MR316527
2021 GMC Yukon XL
SLT 4WD
89,862 mi
Granbury, TX
Fair Deal
$41,420
- 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:
- 115,349
- Stock #:
- JG06070P
- VIN:
- 1GKS2GKD1MR257055
2021 GMC Yukon XL
SLT 4WD
115,349 mi
Livingston, TN
Good Deal
$36,063
- 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:
- Smokey Quartz Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 90,097
- Stock #:
- G266526A
- VIN:
- 1GKS2GKD9MR442759
2021 GMC Yukon XL
SLT 4WD
90,097 mi
Fort Collins, CO
Good Deal
$39,487
- 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
-$1,500
2021 GMC Yukon XL
SLT 4WD
93,766 mi
Staten Island, NY
Good Deal
$39,575
$38,075
- 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:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 82,230
- Stock #:
- JP3289A
- VIN:
- 1GKS2GKD3MR490290
2021 GMC Yukon XL
SLT 4WD
82,230 mi
Red Lion, PA
Fair Deal
$41,478
- 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
$40,165
- 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
2021 GMC Yukon XL
SLT 4WD
170,698 mi
Corydon, IN
Great Deal
$24,500
- 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:
- 114,622
- Stock #:
- C1202A
- VIN:
- 1GKS2GKD9MR267042
Price drop
-$1,446
2021 GMC Yukon XL
SLT 4WD
114,622 mi
Burnsville, MN
Fair Deal
$37,327
$35,881
- 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
Price drop
-$1,400
2021 GMC Yukon XL
SLT 4WD
116,384 mi
Fredericksburg, VA
Great Deal
$33,695
$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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 97,138
- Stock #:
- 51846
- VIN:
- 1GKS2GKD4MR270351
2021 GMC Yukon XL
SLT 4WD
97,138 mi
Milwaukie, OR
Good Deal
$36,888
- 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
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 96,600
- Stock #:
- 254990
- VIN:
- 1GKS2GKD2MR254990
2021 GMC Yukon XL
SLT 4WD
96,600 mi
Hermiston, OR
Good Deal
$38,200
- 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:
- 97,955
- Stock #:
- 26189B
- VIN:
- 1GKS2GKD6MR131192
2021 GMC Yukon XL
SLT 4WD
97,955 mi
Wabash, IN
Good Deal
$37,630
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 $40,651.57. The average price has decreased by -6.6% since last year. The 1193 for sale on CarGurus range from $3,291 to $67,995 in price.
How many GMC Yukon XL SLT 4WD vehicles have no reported accidents or damage?
892 out of 1193 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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