New GMC Sierra 1500 AT4 for Sale nearHeflin, AL

Filters (3)

Location:

Only show listings in AL?

Include delivery listings?

324 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:
5
Stock #:
71045
VIN:
1GTUUEEL8TZ532019
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Bill Smith Buick GMC

Sponsored by Bill Smith Buick GMC

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $77,150

$64,699

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
5
Stock #:
70931
VIN:
3GTUUEE84TG518209
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

Sponsored Listing

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Gray
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
5
Stock #:
23261368
VIN:
1GTUUEE89TZ455186
Gray 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$7,803

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,195

$66,971

$59,967

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Brown (Tan)
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
11
Stock #:
GT2306
VIN:
3GTUUEE88TG519122
Brown (Tan) 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,498

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Birmingham, AL
63 mi away

New car

MSRP $74,905

$62,486

$60,988

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:
4
Stock #:
71055
VIN:
3GTUUEE87TG518267
Coastal Dune 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
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
Transmission:
Automatic
Mileage:
3
Stock #:
23261510
VIN:
1GTUUEE89TZ548726
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,649

$60,357

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
5
Stock #:
70931
VIN:
3GTUUEE84TG518209
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

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:
5
Stock #:
70960
VIN:
3GTUUEE80TG518286
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Gray
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
3
Stock #:
23261494
VIN:
1GTUUEE83TZ546194
Gray 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $76,644

$61,213

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
9
Stock #:
GT2318
VIN:
3GTUUEE85TG518414
White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,488

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Birmingham, AL
63 mi away

New car

MSRP $74,410

$62,065

$60,576

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
3
Stock #:
23261499
VIN:
1GTUUEE8XTZ548816
White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,322

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $76,149

$62,310

$60,787

Year:
2026
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
Transmission:
Automatic
Mileage:
3
Stock #:
23261498
VIN:
1GTUUEE80TZ548730
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,312

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,649

$61,870

$60,357

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
4
Stock #:
70868
VIN:
3GTUUEE86TG518552
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

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:
Black
Combined gas mileage:
15 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
1
Stock #:
TG2156
VIN:
1GTUUEEL4TZ552901
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,250

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

LaGrange, GA
52 mi away

New car

MSRP $75,125

$63,223

$61,973

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:
5
Stock #:
71045
VIN:
1GTUUEEL8TZ532019
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Bill Smith Buick GMC

Sponsored by Bill Smith Buick GMC

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $77,150

$64,699

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
5
Stock #:
70931
VIN:
3GTUUEE84TG518209
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

Sponsored Listing

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Gray
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
5
Stock #:
23261368
VIN:
1GTUUEE89TZ455186
Gray 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$7,803

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,195

$66,971

$59,967

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Brown (Tan)
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
11
Stock #:
GT2306
VIN:
3GTUUEE88TG519122
Brown (Tan) 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,498

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Birmingham, AL
63 mi away

New car

MSRP $74,905

$62,486

$60,988

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:
4
Stock #:
71055
VIN:
3GTUUEE87TG518267
Coastal Dune 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
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
Transmission:
Automatic
Mileage:
3
Stock #:
23261510
VIN:
1GTUUEE89TZ548726
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,649

$60,357

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
5
Stock #:
70931
VIN:
3GTUUEE84TG518209
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

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:
5
Stock #:
70960
VIN:
3GTUUEE80TG518286
Sterling Metallic 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Gray
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
3
Stock #:
23261494
VIN:
1GTUUEE83TZ546194
Gray 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $76,644

$61,213

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
9
Stock #:
GT2318
VIN:
3GTUUEE85TG518414
White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,488

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Birmingham, AL
63 mi away

New car

MSRP $74,410

$62,065

$60,576

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Mileage:
3
Stock #:
23261499
VIN:
1GTUUEE8XTZ548816
White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,322

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $76,149

$62,310

$60,787

Year:
2026
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
Transmission:
Automatic
Mileage:
3
Stock #:
23261498
VIN:
1GTUUEE80TZ548730
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,312

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Roswell, GA
76 mi away

New car

MSRP $75,649

$61,870

$60,357

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 With Kalahari Accents
Transmission:
Automatic
Mileage:
4
Stock #:
70868
VIN:
3GTUUEE86TG518552
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,000

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

Cullman, AL
85 mi away

New car

MSRP $74,855

$62,404

$60,404

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:
Black
Combined gas mileage:
15 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
1
Stock #:
TG2156
VIN:
1GTUUEEL4TZ552901
Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$1,250

 

2026 GMC Sierra 1500

AT4 Crew Cab 4WD

LaGrange, GA
52 mi away

New car

MSRP $75,125

$63,223

$61,973

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 $22,384.00 to $116,211.00 with an average price of $31,628.51. 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.

A better way to discover your best deal

Let us help you find a car you’ll love.