Used GMC Sierra 1500 AT4 for Sale nearSlidell, LA
433 vehicles found
Shop with transparent pricing.
Only show listings that include dealer fees- 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:
- 18,180
- Stock #:
- 2-G9757A
- VIN:
- 3GTUUEE80SG299067
Price drop
-$1,511
Sponsored by Ross Downing GMC
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
18,180 mi
Hammond, LA
44 mi away
Good Deal
$59,454
$57,943
- 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 With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 23,816
- Stock #:
- G1095C
- VIN:
- 1GTUUEE89TZ104892
Sponsored Listing
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
23,816 mi
Hammond, LA
44 mi away
Fair Deal
$59,859
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Volcanic Red Tintcoat
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 38,584
- Stock #:
- G9187A
- VIN:
- 3GTUUEE81RG453747
Sponsored Listing
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
38,584 mi
Hammond, LA
44 mi away
Good Deal
$52,716
- 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:
- 117,315
- Stock #:
- W0467
- VIN:
- 3GTP9EEL6LG216651
Price drop
-$2,915
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
117,315 mi
Harvey, LA
33 mi away
Great Deal
$33,300
$30,800
- 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 $1,261 shipping
Good Deal
$41,211
- 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 $1,582 shipping
Good Deal
$38,761
- 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 $717 shipping
Good Deal
$34,212
- 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
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 99,865
- Stock #:
- 10214
- VIN:
- 3GTP9EEL6LG390459
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
99,865 mi
Home delivery from Collins, MS
Price includes $147 shipping
Fair Deal
$35,436
- 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 $502 shipping
Great Deal
$47,991
- 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 w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 15,096
- Stock #:
- P5371
- VIN:
- 3GTUUEEL9SG355138
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
15,096 mi
Covington, LA
21 mi away
Good Deal
$56,336
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Volcanic Red Tintcoat
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 38,584
- Stock #:
- G9187A
- VIN:
- 3GTUUEE81RG453747
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
38,584 mi
Hammond, LA
44 mi away
Good Deal
$52,716
- 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 with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 43,772
- Stock #:
- TFA91071A
- VIN:
- 1GTUUEET3NZ577095
Price drop
-$1,026
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
43,772 mi
Harvey, LA
33 mi away
Fair Deal
$48,780
$47,754
- 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 With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 4,883
- Stock #:
- 267938A
- VIN:
- 1GTUUEE81TZ148482
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
4,883 mi
Metairie, LA
31 mi away
Good Deal
$61,473
- 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:
- Desert Sand
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 101,108
- Stock #:
- 12752
- VIN:
- 3GTUUEET8NG542567
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
101,108 mi
Home delivery from Buda, TX
Price includes $723 shipping
Fair Deal
$39,443
- 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:
- 73,697
- Stock #:
- 3-G8107B
- VIN:
- 3GTUUEE85PG167235
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
73,697 mi
Home delivery from Gonzales, LA
Free home delivery
Good Deal
$43,981
- 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
- Fuel type:
- Diesel
- Interior color:
- Black
- Mileage:
- 114,099
- Stock #:
- S400746
- VIN:
- 3GTU9EET0MG400746
New arrival
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
114,099 mi
Home delivery from Dallas, TX
Price includes $682 shipping
Fair Deal
$33,906
- 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, Perforated leathe
- Transmission:
- Automatic
- Mileage:
- 40,532
- Stock #:
- 1964A
- VIN:
- 1GTUUEEL6SZ290832
Price drop
-$2,806
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
40,532 mi
Home delivery from West Plains, MO
Price includes $1,150 shipping
Good Deal
$56,158
$53,352
- 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:
- 88,050
- Stock #:
- K305867
- VIN:
- 3GTP9EED4KG305867
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
88,050 mi
Metairie, LA
32 mi away
Fair Deal
$34,493
- 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:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 168,472
- Stock #:
- 1787
- VIN:
- 3GTP9EEL3LG110299
New arrival
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
168,472 mi
Home delivery from Birmingham, AL
Price includes $442 shipping
Fair Deal
$28,736
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 126,000
- Stock #:
- G9668
- VIN:
- 1GTUUEE85PZ119668
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
126,000 mi
Bogalusa, LA
32 mi away
Great Deal
$37,391
- 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 $491 shipping
Great Deal
$31,980
- 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:
- 6,393
- Stock #:
- 2-G9825A
- VIN:
- 3GTUUEE84SG333771
Preparing for a close up...
Photos coming soon
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
6,393 mi
Hammond, LA
44 mi away
Good Deal
$60,307
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior color:
- Thunderstorm Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 43,559
- Stock #:
- 3-G9603A
- VIN:
- 1GTUUEE89RZ253425
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
43,559 mi
Home delivery from Gonzales, LA
Free home delivery
Fair Deal
$52,578
- 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:
- 117,315
- Stock #:
- W0467
- VIN:
- 3GTP9EEL6LG216651
Price drop
-$2,915
Sponsored Listing
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
117,315 mi
Harvey, LA
33 mi away
Great Deal
$33,300
$30,800
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 $26,691.00 to $85,053.05 with an average price of $33,261.52. 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 Slidell, LA?
The average GMC Sierra 1500 AT4 costs about $31,688.78. The average price has decreased by -1.5% since last year. The 433 for sale near Slidell, LA on CarGurus, range from $26,691 to $85,053 in price.
How many GMC Sierra 1500 AT4 vehicles in Slidell, LA have no reported accidents or damage?
396 out of 433 for sale near Slidell, LA 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 Slidell LAGMC Sierra 1500 Denali in Slidell LAGMC Sierra 1500 AT4 in Slidell LAGMC Sierra 1500 Elevation in Slidell LAGMC Sierra 1500 SLE in Slidell LAGMC Sierra 1500 Base in Slidell LAGMC Sierra 1500 Work Truck in Slidell LAGMC Sierra 1500 SLE1 in Slidell LAGMC Sierra 1500 SL in Slidell LAGMC Sierra 1500 SLE2 in Slidell LA
GMC Sierra 1500 in Slidell LAOBS 1990s-era Chevy and Ford Trucks for Sale in Slidell LAUsed GMC Electric Cars for SaleLifted GMC trucks for sale in Slidell LAWork Trucks for Sale in Slidell LAAmerican Made Trucks For Sale in Slidell LAGM Certified Preowned Vehicles for Sale Near Slidell LABest Pickup Trucks For Sale in Slidell LA
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 SlidellUsed SUVs / Crossovers for Sale with Low Mileage in SlidellUsed Hatchbacks for Sale with Low Mileage in SlidellUsed Convertibles for Sale with Low Mileage in SlidellUsed Vans for Sale with Low Mileage in SlidellUsed Minivans for Sale with Low Mileage in SlidellUsed Pickup Trucks for Sale with Low Mileage in SlidellUsed Coupes for Sale with Low Mileage in SlidellUsed Wagons for Sale with Low Mileage in Slidell
