Used GMC Sierra 1500 AT4 for Sale nearBeacon Falls, CT
303 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- 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:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 118,122
- Stock #:
- N5622A
- VIN:
- 1GTU9EET6LZ370182
Sponsored by Blasius North
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
118,122 mi
Torrington, CT
26 mi away
Fair Deal
$30,985
- 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:
- Summit White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 37,638
- Stock #:
- 261049A
- VIN:
- 3GTP9EEL9MG472042
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
37,638 mi
Torrington, CT
26 mi away
Fair Deal
$41,476
- 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:
- 57,465
- Stock #:
- 26-939A
- VIN:
- 3GTUUEE82SG332019
New arrival
Sponsored Listing
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
57,465 mi
Torrington, CT
26 mi away
Fair Deal
$49,776
- 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:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Dark Walnut/Slate
- Transmission:
- Automatic
- Mileage:
- 118,122
- Stock #:
- N5622A
- VIN:
- 1GTU9EET6LZ370182
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
118,122 mi
Torrington, CT
26 mi away
Fair Deal
$30,985
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- Black
- Interior color:
- Jet Black with Kalah
- Transmission:
- Automatic
- Mileage:
- 103,130
- Stock #:
- S0523
- VIN:
- 3GTP9EEL9KG285946
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
103,130 mi
Bristol, CT
19 mi away
Good Deal
$30,398
- 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:
- White
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black with Kalah
- Transmission:
- Automatic
- Mileage:
- 103,928
- Stock #:
- 359144
- VIN:
- 3GTP9EEL0MG359144
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
103,928 mi
East Windsor, CT
39 mi away
Great Deal
$29,989
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- Summit White
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 49,297
- Stock #:
- 00047730
- VIN:
- 1GTUUEELXRZ286941
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
49,297 mi
North Windham, CT
49 mi away
Good Deal
$45,597
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 54,652
- Stock #:
- 3046A
- VIN:
- 3GTUUEEL3RG415182
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
54,652 mi
Saint James, NY
40 mi away
Good Deal
$47,005
- 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
- Transmission:
- Automatic
- Mileage:
- 40,610
- Stock #:
- 12005
- VIN:
- 1GTUUEEL4RZ303720
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
40,610 mi
Branford, CT
18 mi away
Good Deal
$47,712
- 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 (Steel Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 54,752
- Stock #:
- 27812
- VIN:
- 1GTP9EEL0MZ170347
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
54,752 mi
Branford, CT
15 mi away
Fair Deal
$38,475
- Year:
- 2026
- 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:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 11,016
- Stock #:
- U2337TS
- VIN:
- 3GTUUEEL8TG159032
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
11,016 mi
Bohemia, NY
47 mi away
Great Deal
$55,175
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 59,000
- Stock #:
- U12493A
- VIN:
- 3GTUUEELXPG120139
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
59,000 mi
Waterbury, CT
9 mi away
Good Deal
$42,419
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- 8-Speed Automatic
- Mileage:
- 64,015
- Stock #:
- N64484A
- VIN:
- 3GTP9EED2KG295677
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
64,015 mi
New Britain, CT
22 mi away
Good Deal
$33,217
- 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:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 12,732
- Stock #:
- CC3314
- VIN:
- 1GTUUEELXRZ227856
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
12,732 mi
Bristol, CT
18 mi away
Good Deal
$51,196
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 66,634
- Stock #:
- UB6751
- VIN:
- 3GTP9EED3LG151007
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
66,634 mi
Riverhead, NY
40 mi away
Good Deal
$35,015
- 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 (Satin Steel Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 58,703
- Stock #:
- G26368A
- VIN:
- 3GTP9EEDXMG468610
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
58,703 mi
Home delivery from Arundel, ME
Price includes $285 shipping
Good Deal
$36,874
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 64,847
- Stock #:
- 285311F
- VIN:
- 1GTUUEEL9PZ285311
Price drop
-$1,215
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
64,847 mi
Wallingford, CT
14 mi away
Great Deal
$42,463
$41,248
- 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:
- Volcanic Red Tintcoat
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 41,810
- Stock #:
- 26-679A
- VIN:
- 3GTUUEEL0PG307518
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
41,810 mi
Torrington, CT
26 mi away
Good Deal
$45,476
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- White
- Interior color:
- Jet Black with Kalah
- Transmission:
- Automatic
- Mileage:
- 136,098
- Stock #:
- 199859
- VIN:
- 3GTU9EET3MG199859
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
136,098 mi
Waterbury, CT
9 mi away
Fair Deal
$27,694
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Blue Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 28,067
- Stock #:
- PL9540A
- VIN:
- 3GTUUEE84RG235401
Price drop
-$1,084
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
28,067 mi
Norwich, CT
50 mi away
Fair Deal
$51,886
$50,802
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 32,872
- Stock #:
- 388820F
- VIN:
- 3GTUUEEL4RG388820
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
32,872 mi
Wallingford, CT
14 mi away
Good Deal
$50,201
- 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:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 104,856
- Stock #:
- 28663535
- VIN:
- 3GTP9EEL7KG238284
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
104,856 mi
Store transfer to Waterbury, CT
Price includes $1,499 shipping
Fair Deal
$32,497
- 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
- Transmission:
- Automatic
- Mileage:
- 25,184
- Stock #:
- ZC26488
- VIN:
- 1GTUUEE86SZ213079
Price drop
-$1,005
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
25,184 mi
Home delivery from Hicksville, OH
Price includes $756 shipping
Good Deal
$51,151
$50,146
- 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 (Steel Metallic)
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 54,752
- Stock #:
- 27812
- VIN:
- 1GTP9EEL0MZ170347
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
54,752 mi
Branford, CT
15 mi away
Fair Deal
$38,475
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 $26,482.50 to $117,777.95 with an average price of $31,637.05. 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
*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.
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 Beacon Falls, CT?
The average GMC Sierra 1500 AT4 costs about $30,452.55. The average price has decreased by -5.5% since last year. The 305 for sale near Beacon Falls, CT on CarGurus, range from $26,482 to $117,778 in price.
How many GMC Sierra 1500 AT4 vehicles in Beacon Falls, CT have no reported accidents or damage?
292 out of 305 for sale near Beacon Falls, CT 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/MPGe.
What fuel types are available?
Diesel, 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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