Used GMC Sierra 1500 AT4 for Sale nearBennett, CO
305 vehicles found
See the total price upfront.
Only show listings that include dealer fees- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 93,756
- Stock #:
- 186406T
- VIN:
- 1GTP9EED3MZ186406
Sponsored by ClearShift
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
93,756 mi
Highlands Ranch, CO
30 mi away
Good Deal
$35,742
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 70,889
- Stock #:
- T18274
- VIN:
- 1GTUUEEL0PZ200114
Sponsored Listing
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
70,889 mi
Parker, CO
22 mi away
Great Deal
$43,900
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 67,584
- Stock #:
- YMZ378975
- VIN:
- 1GTU9EET2MZ378975
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
67,584 mi
Englewood, CO
25 mi away
Good Deal
$38,397
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 31,458
- Stock #:
- LZ295225
- VIN:
- 1GTP9EELXLZ295225
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
31,458 mi
Lone Tree, CO
27 mi away
Fair Deal
$45,500
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Cayenne Red Tintcoat
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 106,976
- Stock #:
- BC22335
- VIN:
- 3GTU9EET3MG407268
Price drop
-$1,000
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
106,976 mi
Frederick, CO
42 mi away
Fair Deal
$35,594
$34,594
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 24,363
- Stock #:
- 260481C
- VIN:
- 1GTUUEE81SZ136542
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
24,363 mi
Parker, CO
24 mi away
Great Deal
$54,674
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 70,889
- Stock #:
- T18274
- VIN:
- 1GTUUEEL0PZ200114
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
70,889 mi
Parker, CO
22 mi away
Great Deal
$43,900
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 82,147
- Stock #:
- 129537
- VIN:
- 1GTP9EEL0LZ129537
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
82,147 mi
Denver, CO
32 mi away
Great Deal
$34,895
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- 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:
- 8-Speed Automatic
- Mileage:
- 93,245
- Stock #:
- 170072
- VIN:
- 1GTP9EED1KZ170072
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
93,245 mi
Frederick, CO
42 mi away
Great Deal
$31,092
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 42,507
- Stock #:
- BC22777
- VIN:
- 1GTUUEELXRZ277625
New arrival
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
42,507 mi
Frederick, CO
42 mi away
Fair Deal
$54,594
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Sterling Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 11,240
- Stock #:
- SG265775
- VIN:
- 3GTUUEEL5SG265775
Price drop
-$2,944
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
11,240 mi
Home delivery from Loveland, CO
Price includes $88 shipping
Great Deal
$59,032
$56,786
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 30,139
- Stock #:
- RG450614
- VIN:
- 3GTUUEEL5RG450614
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
30,139 mi
Lone Tree, CO
27 mi away
Good Deal
$55,076
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 93,756
- Stock #:
- 186406T
- VIN:
- 1GTP9EED3MZ186406
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
93,756 mi
Highlands Ranch, CO
30 mi away
Good Deal
$35,742
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 88,879
- Stock #:
- MX4246
- VIN:
- 1GTU9EET0MZ339558
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
88,879 mi
Home delivery from Louisville, TN
Price includes $2,057 shipping
Fair Deal
$37,748
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Blue
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 112,644
- Stock #:
- 26056
- VIN:
- 1GTP9EEL9KZ254809
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
112,644 mi
Franktown, CO
28 mi away
Good Deal
$32,000
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Thunderstorm Gray
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents, Perforated Leathe
- Transmission:
- Automatic
- Mileage:
- 24,787
- Stock #:
- TRG158647
- VIN:
- 3GTUUEEL6RG158647
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
24,787 mi
Highlands Ranch, CO
34 mi away
Good Deal
$55,674
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Dynamic Blue Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 60,613
- Stock #:
- 22716
- VIN:
- 1GTUUEEL7PZ119174
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
60,613 mi
Home delivery from Tampa, FL
Price includes $1,567 shipping
Great Deal
$43,564
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Summit White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- 10-Speed Automatic
- Mileage:
- 86,820
- Stock #:
- JV299589
- VIN:
- 1GTU9EET7MZ299589
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
86,820 mi
Highlands Ranch, CO
30 mi away
Good Deal
$36,644
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Summit White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 71,373
- Stock #:
- FP00789
- VIN:
- 1GTUUEET5NZ613689
Price drop
-$1,000
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
71,373 mi
Home delivery from Junction City, KS
Price includes $514 shipping
Good Deal
$43,414
$42,414
- Year:
- 2022
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 21,582
- Stock #:
- NZ643812C
- VIN:
- 1GTPUEEL0NZ643812
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
21,582 mi
Castle Rock, CO
34 mi away
Good Deal
$50,598
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Titanium
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 23,528
- Stock #:
- 260357C
- VIN:
- 1GTUUEELXSZ156874
Price drop
-$2,768
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
23,528 mi
Parker, CO
24 mi away
Good Deal
$58,546
$55,778
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 121,173
- VIN:
- 1GTP9EEL5MZ226461
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
121,173 mi
Home delivery from Portland, OR
Price includes $1,502 shipping
Good Deal
$31,352
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Summit White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 128,321
- Stock #:
- LG261189
- VIN:
- 3GTU9EET1LG261189
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
128,321 mi
Westminster, CO
35 mi away
Good Deal
$30,592
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Blue
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 112,644
- Stock #:
- 26056
- VIN:
- 1GTP9EEL9KZ254809
Sponsored Listing
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
112,644 mi
Franktown, CO
28 mi away
Good Deal
$32,000
Overview
The GMC Sierra 1500 is a spacious and capable pickup. It is offered in a number of trims providing a wide array of creature comforts. While GMC might be more sooner associated with the chrome-clad Denali variants, the Sierra is also available in more outdoorsy trims, such as the AT4. Designed as a sort of the anti-Denali, the AT4 is designed to get muddy. It features a 2-inch lift, Rancho shocks, upgraded underbody skid plates, an Auto-Trap two-speed transfer case, and a locking rear differential. The AT4 is not without niceties, as it receives a unique black interior with Kalahari accents and a host of creature comforts. The AT4 trim was introduced with the redesigned Sierra 1500 in 2019 and has continued through the 1500’s 2022 model year update.
Key Features
- Gas V8, Duramax Turbodiesel I6
- 2-inch suspension lift w/ Rancho shocks
- Skid plates
- Heated/ventilated front seats, leather upholstery
- Touchscreen infotainment w/ Apple CarPlay, Android Auto
Pricing Details
In Crew Cab configuration, the 2023 GMC Sierra 1500 AT4 carries a $66,700 MSRP. Used examples on CarGurus range from $26,051.00 to $86,259.00 with an average price of $33,535.40. The Sierra 1500 AT4 is available with a number of options packages. The Premium Package adds a number of upgraded driver assistance features. The Technology Package adds a head-up display, bed view camera, and rear camera mirror. The AT4 Preferred Package adds a universal garage door opener, adaptive cruise control, and a power-sliding rear window with a defogger.
Specifications
Performance
Engine
6.2-liter gas V8, 3.0-liter turbodiesel I6
Transmission
Eight-speed automatic (gas), 10-speed automatic (diesel)
Drivetrain
Four-wheel drive (4WD)
Horsepower/Torque
420 hp/460 lb-ft (gas) / 277 hp/460 lb-ft (diesel)
0-60 mph
5.8 seconds
MPG
24 mpg city, 34 mpg highway, 28 combined (6AT) / 26 mpg city, 36 mpg highway, 30 combined (5MT)
Curb weight
4,816 pounds
Dimensions
wheelbase
147.53 inches
length
231.72 inches
width
81.24 inches
height
78.35 inches
4.0 Overall rating
Filter by rating
Anonymous
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Sep 9, 2024
The truck had all the features I wanted and the price was in-line, or better with others in my search.
Is this review helpful?
Buddy H
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Jan 5, 2025
Slightly over priced for the miles I would pay $29000-$30000 all day
Is this review helpful?
FAQs
How much does the GMC Sierra 1500 AT4 cost in Bennett, CO?
The average GMC Sierra 1500 AT4 costs about $32,186.99. The average price has decreased by -0.9% since last year. The 306 for sale near Bennett, CO on CarGurus, range from $26,051 to $86,259 in price.
How many GMC Sierra 1500 AT4 vehicles in Bennett, CO have no reported accidents or damage?
280 out of 306 for sale near Bennett, CO have no reported accidents or damage.
What is the fuel economy of the GMC Sierra 1500 AT4?
Depending on the engine and options, the GMC Sierra 1500 AT4 gets between 15 and 24 MPG (or EV battery range).
What fuel types are available?
Diesel, Gasoline engines are available.
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