Used GMC Sierra 1500 AT4 for Sale nearColebrook, CT
303 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:
- 420 hp 6.2L V8
- Exterior color:
- Sterling Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 36,412
- Stock #:
- SP1492
- VIN:
- 1GTUUEEL1PZ167348
Sponsored by Stafford Chrysler Dodge Jeep Ram
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
36,412 mi
Stafford Springs, CT
39 mi away
Great Deal
$49,567
- 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:
- Gray (Satin Steel Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 149,777
- Stock #:
- 5375
- VIN:
- 1GTP9EEL1KZ315375
Sponsored Listing
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
149,777 mi
Thomaston, CT
25 mi away
Great Deal
$23,998
- 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
Sponsored Listing
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
41,810 mi
Torrington, CT
14 mi away
Fair Deal
$50,476
- 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:
- Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 73,988
- Stock #:
- 26235
- VIN:
- 1GTUUEET1NZ519048
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
73,988 mi
Home delivery from Franktown, CO
Price includes $1,988 shipping
Good Deal
$41,938
- 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:
- Gray
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 38,846
- Stock #:
- MX5047
- VIN:
- 1GTP9EELXKZ340470
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
38,846 mi
Home delivery from Michigan Center, MI
Price includes $1,033 shipping
Good Deal
$38,212
- 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:
- Summit White
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 6,376
- Stock #:
- G13576A
- VIN:
- 3GTUUEEL6SG118123
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
6,376 mi
Berlin, CT
32 mi away
Good Deal
$58,799
- Year:
- 2023
- 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:
- 61,181
- Stock #:
- 26X259A
- VIN:
- 3GTUUEE83PG163989
Price drop
-$1,061
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
61,181 mi
Pittsfield, MA
31 mi away
Good Deal
$46,330
$45,269
- Year:
- 2023
- 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:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 39,379
- Stock #:
- 5260
- VIN:
- 1GTUUEE86PZ207354
New arrival
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
39,379 mi
Home delivery from Seffner, FL
Price includes $1,152 shipping
Great Deal
$48,131
- 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:
- 83,058
- Stock #:
- 26825SA
- VIN:
- 3GTP9EEL8KG198345
Price drop
-$2,000
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
83,058 mi
Lake Katrine, NY
45 mi away
Great Deal
$34,174
$32,174
- 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 $167 shipping
Great Deal
$33,951
- 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 With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 50,303
- Stock #:
- Z4371A
- VIN:
- 1GTUUEE86PZ226972
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
50,303 mi
Brookfield, CT
41 mi away
Good Deal
$45,986
- 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:
- Sterling Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 36,412
- Stock #:
- SP1492
- VIN:
- 1GTUUEEL1PZ167348
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
36,412 mi
Stafford Springs, CT
39 mi away
Great Deal
$49,567
- 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 (Dark Sky Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents, Perforated Leathe
- Transmission:
- Automatic
- Mileage:
- 76,100
- Stock #:
- G3767A
- VIN:
- 3GTP9EEL7LG451365
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
76,100 mi
Home delivery from Penns Grove, NJ
Free home delivery
Great Deal
$35,933
- 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:
- 40,002
- Stock #:
- Z4242
- VIN:
- 1GTUUEE89RZ198622
Price drop
-$1,272
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
40,002 mi
Brookfield, CT
41 mi away
Great Deal
$50,986
$49,714
- 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
- Transmission:
- Automatic
- Mileage:
- 38,583
- Stock #:
- 7437P
- VIN:
- 1GTUUEEL6PZ251942
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
38,583 mi
Home delivery from Mystic, CT
Price includes $74 shipping
Great Deal
$47,048
- 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:
- 62,922
- Stock #:
- 52900AQ
- VIN:
- 3GTUUEELXPG120724
Price drop
-$1,000
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
62,922 mi
Waterbury, CT
33 mi away
Great Deal
$45,923
$44,923
- 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
27 mi away
Good Deal
$32,489
- 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:
- Titanium Rush Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black (Obsidian Rush)
- Transmission:
- Automatic
- Mileage:
- 57,080
- Stock #:
- T100646A
- VIN:
- 3GTUUEEL4PG100646
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
57,080 mi
Watertown, CT
31 mi away
Great Deal
$45,000
- 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:
- 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
26 mi away
Great Deal
$53,996
- 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 With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 106,635
- Stock #:
- 22777A
- VIN:
- 3GTU9EET7MG276765
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
106,635 mi
Home delivery from Tampa, FL
Price includes $1,154 shipping
Great Deal
$32,133
- 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:
- 21,624
- Stock #:
- A292610
- VIN:
- 1GTUUEE84SZ292610
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
21,624 mi
Watertown, CT
31 mi away
Great Deal
$54,500
- 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:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 129,864
- Stock #:
- ZD2134
- VIN:
- 3GTP9EEL7KG235045
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
129,864 mi
Home delivery from Fredericksburg, VA
Price includes $522 shipping
Great Deal
$28,516
- 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:
- Cardinal Red
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 72,236
- Stock #:
- 26-612A
- VIN:
- 1GTP9EED8MZ236040
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
72,236 mi
Torrington, CT
14 mi away
Good Deal
$37,276
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 16,843
- Stock #:
- A211661
- VIN:
- 1GTUUEE81SZ211661
Sponsored Listing
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
16,843 mi
Pawling, NY
42 mi away
Good Deal
$56,000
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 $21,500.00 to $86,847.55 with an average price of $33,239.08. 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 Colebrook, CT?
The average GMC Sierra 1500 AT4 costs about $31,667.29. The average price has decreased by -1.5% since last year. The 303 for sale near Colebrook, CT on CarGurus, range from $21,500 to $86,848 in price.
How many GMC Sierra 1500 AT4 vehicles in Colebrook, CT have no reported accidents or damage?
286 out of 303 for sale near Colebrook, 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 (or EV battery range).
What fuel types are available?
Diesel, Gasoline engines are available.
Relevant articles
CarGurus Editorial Team
Best Truck Lease Deals in August 2026
Leasing a truck can be a great way to get into one of the latest models, with the best technology, at a more affordable monthly price. Here are the best deals we've found this month.
CarGurus Editorial Team
Best Car Deals in August 2026
In the market for a new or used car this year? Whether you’re looking to buy or lease, we’ve collated a list of the best car deals available this month.
CarGurus Editorial Team
The Best Gas Mileage Trucks of 2026
No one wants to cover unnecessary fuel expenses, particularly when operating a business. Here are the top 9 pickup trucks in the US market with the best fuel efficiency.
GMC Sierra 1500 SLT in Colebrook CTGMC Sierra 1500 Denali in Colebrook CTGMC Sierra 1500 AT4 in Colebrook CTGMC Sierra 1500 Elevation in Colebrook CTGMC Sierra 1500 SLE in Colebrook CTGMC Sierra 1500 Base in Colebrook CTGMC Sierra 1500 Work Truck in Colebrook CTGMC Sierra 1500 SLE1 in Colebrook CTGMC Sierra 1500 SL in Colebrook CTGMC Sierra 1500 SLE2 in Colebrook CT
GMC Sierra 1500 in Colebrook CTOBS 1990s-era Chevy and Ford Trucks for Sale in Colebrook CTUsed GMC Electric Cars for SaleLifted GMC trucks for sale in Colebrook CTWork Trucks for Sale in Colebrook CTAmerican Made Trucks For Sale in Colebrook CTGM Certified Preowned Vehicles for Sale Near Colebrook CTBest Pickup Trucks For Sale in Colebrook CT
All Used CarsManual Transmission CarsLuxury CarsCars with Red InteriorCheap Manual CarsHybrid CarsSports CarsElectric SUVsCheap TrucksSmall CarsThird Row SUVsThree Quarter Ton TrucksLifted TrucksManual Transmission TrucksDiesel TrucksHybrid SUVsDually TrucksOne Ton TrucksCheap SUVsLifted Ford Trucks4x4 TrucksWork TrucksAWD SUVsFord TrucksChevrolet TrucksToyota TrucksTrucks Under $10,000Cars Under $15,000Sports Cars Under $20,000Trucks Under $20,000Used Sedans for Sale with Low Mileage in ColebrookUsed SUVs / Crossovers for Sale with Low Mileage in ColebrookUsed Hatchbacks for Sale with Low Mileage in ColebrookUsed Convertibles for Sale with Low Mileage in ColebrookUsed Vans for Sale with Low Mileage in ColebrookUsed Minivans for Sale with Low Mileage in ColebrookUsed Pickup Trucks for Sale with Low Mileage in ColebrookUsed Coupes for Sale with Low Mileage in ColebrookUsed Wagons for Sale with Low Mileage in Colebrook
