New GMC Sierra 1500 AT4 for Sale nearDecatur, IL
232 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- 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:
- 10
- Stock #:
- C349
- VIN:
- 3GTUUEELXTG490632
Sponsored by Jennings Beardstown, Inc.
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Beardstown, IL
80 mi away
New car
MSRP $76,645
$77,694
- 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:
- Sterling Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents, Perforated Leathe
- Transmission:
- Automatic
- Mileage:
- 15
- Stock #:
- G26108
- VIN:
- 3GTUUEEL8TG446113
Sponsored Listing
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Centralia, IL
91 mi away
New car
MSRP $74,269
$71,682
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Sterling Metallic
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 10
- Stock #:
- C335
- VIN:
- 1GTUUEE87TZ455669
Sponsored Listing
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Beardstown, IL
80 mi away
New car
MSRP $73,855
$71,212
- 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:
- Coastal Dune
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 2
- Stock #:
- 113020
- VIN:
- 3GTUUEEL6TG427687
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Kansas City, KS
Price includes $471 shipping
New car
MSRP $111,105
$99,170
- 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:
- Sterling Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 2
- Stock #:
- 112931
- VIN:
- 1GTUUEEL0TZ433470
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Kansas City, KS
Price includes $471 shipping
New car
MSRP $73,825
$61,890
- 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:
- Coastal Dune
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 5
- Stock #:
- N7953
- VIN:
- 1GTUUEEL1TZ426382
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Saint Charles, IL
Price includes $400 shipping
New car
MSRP $76,244
$66,991
- 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:
- Sterling Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 2,487
- Stock #:
- L264948
- VIN:
- 1GTUUEEL1TZ334379
New arrival
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $76,095
$60,622
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Coastal Dune
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267124
- VIN:
- 1GTUUEE80TZ447140
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $70,880
$60,021
- 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:
- 0
- Stock #:
- 113019
- VIN:
- 3GTUUEEL7TG422935
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Kansas City, KS
Price includes $471 shipping
New car
MSRP $75,650
$63,715
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Onyx Black
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267433
- VIN:
- 3GTUUEE84TG434259
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $70,880
$60,021
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Coastal Dune
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267446
- VIN:
- 1GTUUEE85TZ460675
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $73,400
$62,251
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Sterling Metallic
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267157
- VIN:
- 1GTUUEE83TZ447942
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $72,180
$61,187
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Summit White
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267357
- VIN:
- 1GTUUEE84TZ457735
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $70,885
$60,041
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Coastal Dune
- Fuel type:
- Diesel
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 1
- Stock #:
- 113042
- VIN:
- 3GTUUEE83TG415282
New arrival
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Kansas City, KS
Price includes $471 shipping
New car
MSRP $75,855
$65,920
- 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
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L266771
- VIN:
- 1GTUUEEL8TZ434995
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $73,770
$60,578
- 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:
- Coastal Dune
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 2,666
- Stock #:
- L265386
- VIN:
- 3GTUUEEL7TG339084
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $76,095
$60,622
- 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:
- Summit White
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L265799
- VIN:
- 3GTUUEEL5TG356563
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $73,775
$59,598
- 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:
- Summit White
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 2,636
- Stock #:
- L265802
- VIN:
- 3GTUUEEL8TG338025
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $75,600
$60,198
- 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:
- Summit White
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 0
- Stock #:
- 113023
- VIN:
- 3GTUUEEL2TG454224
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Home delivery from Kansas City, KS
Price includes $471 shipping
New car
MSRP $75,155
$63,220
- 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:
- Sterling Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 2,420
- Stock #:
- L265090
- VIN:
- 3GTUUEEL6TG321496
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $76,095
$60,622
- 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:
- Sterling Metallic
- Combined gas mileage:
- 15 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L265862
- VIN:
- 3GTUUEEL8TG358744
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $74,270
$60,036
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Coastal Dune
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267434
- VIN:
- 3GTUUEE84TG434388
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $72,675
$61,609
- 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
- Transmission:
- Automatic
- Mileage:
- 7
- Stock #:
- L267688
- VIN:
- 3GTUUEELXTG485429
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $76,095
$62,636
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Coastal Dune
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 22
- Stock #:
- L267471
- VIN:
- 1GTUUEE85TZ453645
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
Collinsville, IL
98 mi away
New car
MSRP $73,175
$62,067
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 $22,928.00 to $85,286.00 with an average price of $32,830.43. 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
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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