Used GMC Sierra 1500 AT4 for Sale nearProspect, CT
331 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Summit White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 62,925
- Stock #:
- XPA2412
- VIN:
- 1GTUUEE85PZ318686
New arrival
Sponsored by Napoli Auto Xpress
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
62,925 mi
Milford, CT
21 mi away
Fair Deal
$45,685
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Titanium Rush Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 78,106
- Stock #:
- X8037H28
- VIN:
- 1GTUUEE85RZ112285
Sponsored Listing
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
78,106 mi
Stratford, CT
22 mi away
Fair Deal
$45,116
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior color:
- Summit White
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 92,237
- Stock #:
- P16319
- VIN:
- 1GTR9EELXKZ296978
Sponsored Listing
2019 GMC Sierra 1500
AT4 Double Cab 4WD
92,237 mi
Vernon Rockville, CT
33 mi away
Fair Deal
$32,598
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Dynamic Blue Metallic
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 48,605
- Stock #:
- 15UPZ175721
- VIN:
- 1GTUUEE8XPZ175721
Price drop
-$1,000
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
48,605 mi
Riverhead, NY
42 mi away
Great Deal
$43,170
$42,170
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Sterling Metallic
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 25,892
- Stock #:
- T6225B
- VIN:
- 1GTUUEE8XPZ203890
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
25,892 mi
Home delivery from Las Vegas, NV
Price includes $2,281 shipping
Fair Deal
$49,934
- 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
17 mi away
Fair Deal
$39,710
- 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:
- Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 122,811
- Stock #:
- DN308461
- VIN:
- 3GTU9EET8LG308461
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
122,811 mi
Home delivery from Houston, TX
Price includes $1,346 shipping
Fair Deal
$29,761
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 107,873
- Stock #:
- 217590T
- VIN:
- 3GTP9EEL6LG217590
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
107,873 mi
Home delivery from Pleasantville, NJ
Price includes $334 shipping
Great Deal
$29,219
- 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:
- Black
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 75,307
- Stock #:
- 26426
- VIN:
- 1GTPUEEL4NZ508364
New arrival
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
75,307 mi
Home delivery from Franktown, CO
Price includes $2,000 shipping
Fair Deal
$41,950
- 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 (Satin Steel Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 77,180
- Stock #:
- G26458A
- VIN:
- 1GTU9EET0MZ209201
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
77,180 mi
Home delivery from Arundel, ME
Price includes $278 shipping
Great Deal
$33,366
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 67,790
- Stock #:
- G26230A
- VIN:
- 3GTP9EEL2LG120404
Price drop
-$965
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
67,790 mi
New Britain, CT
15 mi away
Good Deal
$36,679
$35,714
- 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 (Dark Sky Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 74,518
- Stock #:
- ZC26468
- VIN:
- 1GTU9EET1MZ186169
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
74,518 mi
Home delivery from Hicksville, OH
Price includes $761 shipping
Fair Deal
$35,151
- 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:
- Summit White
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 111,359
- Stock #:
- 110953
- VIN:
- 1GTP9EED8MZ224518
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
111,359 mi
Home delivery from Nashua, NH
Price includes $348 shipping
Fair Deal
$31,343
- 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 $278 shipping
Fair Deal
$38,366
- 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
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
118,122 mi
Torrington, CT
23 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:
- Black
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 93,937
- Stock #:
- FT08794
- VIN:
- 3GTP9EEL4MG348003
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
93,937 mi
Home delivery from Paterson, NJ
Price includes $130 shipping
Good Deal
$32,114
- 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
$49,938
- 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:
- 12,022
- Stock #:
- 3U1769
- VIN:
- 1GTUUEEL9RZ227380
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
12,022 mi
Home delivery from Lenoir, NC
Price includes $629 shipping
Good Deal
$54,608
- 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:
- Black
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 104,419
- Stock #:
- 234083
- VIN:
- 3GTP9EED7LG234083
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
104,419 mi
Home delivery from Peabody, MA
Price includes $250 shipping
Good Deal
$29,630
- 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:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 66,011
- Stock #:
- 161744
- VIN:
- 1GTUUEEL1PZ161744
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
66,011 mi
Home delivery from Denver, CO
Price includes $2,508 shipping
Fair Deal
$45,507
- 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
33 mi away
Great Deal
$30,489
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 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:
- 21,753
- Stock #:
- M1082A
- VIN:
- 3GTUUEE87SG108597
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
21,753 mi
Home delivery from Ashland, OH
Price includes $500 shipping
Fair Deal
$55,214
- 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:
- 62,956
- Stock #:
- 52900AQ
- VIN:
- 3GTUUEELXPG120724
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
62,956 mi
Waterbury, CT
3 mi away
Great Deal
$41,996
- 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:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 110,591
- Stock #:
- T120754
- VIN:
- 3GTP9EEL7LG120754
New arrival
Sponsored Listing
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
110,591 mi
Watertown, CT
8 mi away
Great Deal
$30,000
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 $23,027.00 to $86,613.30 with an average price of $32,345.09. 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 Prospect, CT?
The average GMC Sierra 1500 AT4 costs about $30,890.44. The average price has decreased by -4.1% since last year. The 331 for sale near Prospect, CT on CarGurus, range from $23,027 to $86,613 in price.
How many GMC Sierra 1500 AT4 vehicles in Prospect, CT have no reported accidents or damage?
312 out of 331 for sale near Prospect, 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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