Used GMC Sierra 1500 AT4 for Sale nearO Fallon, IL
431 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:
- 420 hp 6.2L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 65,982
- Stock #:
- 2639112
- VIN:
- 3GTP9EEL1LG387727
Sponsored by ELCO Cadillac
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
65,982 mi
Ballwin, MO
35 mi away
Good Deal
$39,110
- 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, Perforated Leathe
- Transmission:
- Automatic
- Mileage:
- 64,699
- Stock #:
- 2634241
- VIN:
- 1GTUUEE81PZ168687
Sponsored Listing
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
64,699 mi
Herculaneum, MO
37 mi away
Good Deal
$43,536
- 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:
- 69,995
- Stock #:
- T0990AA
- VIN:
- 1GTUUEE81PZ171749
Sponsored Listing
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
69,995 mi
St Louis, MO
24 mi away
Great Deal
$41,271
- 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:
- 69,995
- Stock #:
- T0990AA
- VIN:
- 1GTUUEE81PZ171749
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
69,995 mi
St Louis, MO
24 mi away
Great Deal
$41,271
- 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:
- Titanium Rush Metallic
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 72,631
- Stock #:
- L264495B
- VIN:
- 1GTUUEET2NZ634323
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
72,631 mi
Collinsville, IL
8 mi away
Good Deal
$39,872
- 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:
- Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- TWO/TONE
- Transmission:
- Automatic
- Mileage:
- 90,824
- Stock #:
- 2026-498
- VIN:
- 3GTU9EET6MG365839
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
90,824 mi
Home delivery from Seffner, FL
Price includes $1,280 shipping
Good Deal
$34,774
- 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:
- Onyx Black
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 145,650
- Stock #:
- L265289A
- VIN:
- 3GTP9EED4MG238433
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
145,650 mi
Collinsville, IL
8 mi away
Great Deal
$26,872
- 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:
- 10-Speed Automatic
- Mileage:
- 7,612
- Stock #:
- K88011
- VIN:
- 1GTUUEE80TZ291486
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
7,612 mi
Herculaneum, MO
37 mi away
Good Deal
$57,516
- 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
- Transmission:
- Automatic
- Mileage:
- 60,893
- Stock #:
- L266376A
- VIN:
- 1GTUUEE82PZ128361
Price drop
-$2,000
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
60,893 mi
Collinsville, IL
8 mi away
Great Deal
$45,372
$43,372
- 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:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 72,369
- Stock #:
- L266391A
- VIN:
- 3GTUUEET3NG650739
Price drop
-$1,000
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
72,369 mi
Collinsville, IL
8 mi away
Good Deal
$39,872
$38,872
- 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:
- Thunderstorm Gray
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 31,908
- Stock #:
- P1553A
- VIN:
- 3GTUUEEL4SG103538
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
31,908 mi
Home delivery from Peoria, IL
Price includes $222 shipping
Fair Deal
$54,430
- 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:
- 56,671
- Stock #:
- X155626
- VIN:
- 1GTUUEEL9PZ155626
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
56,671 mi
Home delivery from Addison, TX
Price includes $550 shipping
Good Deal
$46,116
- 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
- Transmission:
- Automatic
- Mileage:
- 98,222
- Stock #:
- L265987A
- VIN:
- 1GTP9EEL0MZ433288
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
98,222 mi
Collinsville, IL
8 mi away
Good Deal
$33,872
- 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 (Dark Sky Metallic)
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 95,740
- Stock #:
- L261993B
- VIN:
- 3GTP9EELXKG297572
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
95,740 mi
Collinsville, IL
8 mi away
Great Deal
$31,372
- 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 Leather
- Transmission:
- Automatic
- Mileage:
- 18,272
- Stock #:
- 360371A
- VIN:
- 3GTUUEE81SG273173
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
18,272 mi
Ellisville, MO
37 mi away
Fair Deal
$57,620
- 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
- Transmission:
- Automatic
- Mileage:
- 121,397
- Stock #:
- L266200A
- VIN:
- 1GTP9EEL6LZ333226
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
121,397 mi
Collinsville, IL
8 mi away
Fair Deal
$33,372
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 61,515
- Stock #:
- UM11080
- VIN:
- 1GTUUEE88PZ319007
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
61,515 mi
Home delivery from Pontiac, IL
Price includes $399 shipping
Good Deal
$44,774
- 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:
- Pacific Blue Metallic
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 72,329
- Stock #:
- L265986A
- VIN:
- 3GTP9EED4LG154627
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
72,329 mi
Collinsville, IL
8 mi away
Fair Deal
$36,872
- 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:
- 67,656
- Stock #:
- G26999A
- VIN:
- 1GTUUEE88PZ103528
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
67,656 mi
O'Fallon, MO
47 mi away
Good Deal
$44,099
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Black
- Fuel type:
- Diesel
- Interior color:
- Black
- Mileage:
- 46,236
- Stock #:
- 161741
- VIN:
- 1GTUUEE81PZ161741
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
46,236 mi
Home delivery from Marietta, GA
Price includes $658 shipping
Good Deal
$48,328
- 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:
- 10,060
- Stock #:
- P3227
- VIN:
- 3GTUUEEL4SG363843
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
10,060 mi
Home delivery from Camden, TN
Price includes $202 shipping
Good Deal
$55,995
- 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:
- Pacific Blue Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 59,775
- Stock #:
- L265422A
- VIN:
- 3GTP9EEL5LG438338
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
59,775 mi
Collinsville, IL
8 mi away
Fair Deal
$40,872
- 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
- Combined gas mileage:
- 16 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 28,482
- Stock #:
- MX4851
- VIN:
- 1GTP9EEL1MZ241989
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
28,482 mi
Home delivery from Louisville, TN
Price includes $675 shipping
Fair Deal
$44,374
- 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:
- Cardinal Red
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 51,101
- Stock #:
- A15676NC
- VIN:
- 3GTU9EET4MG361577
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
51,101 mi
Saint Charles, MO
37 mi away
Fair Deal
$40,921
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 $25,199.00 to $84,976.05 with an average price of $33,131.27. 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 O Fallon, IL?
The average GMC Sierra 1500 AT4 costs about $31,601.65. The average price has decreased by -1.5% since last year. The 431 for sale near O Fallon, IL on CarGurus, range from $25,199 to $84,976 in price.
How many GMC Sierra 1500 AT4 vehicles in O Fallon, IL have no reported accidents or damage?
396 out of 431 for sale near O Fallon, IL 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.
*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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