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New GMC Sierra 1500 AT4 for Sale near Merino, CO

71 results
Atwood, CO
2026 GMC Sierra 1500 AT4 Crew Cab 4WD Markley Motors

2026 GMC Sierra 1500

New car | MSRP $73,910

$74,409

Fort Collins, CO
95 mi away
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
Fuel type:
Gasoline
Interior color:
Black (Jet Blk With Kalahari Acc)
Transmission:
Automatic
Mileage:
3
Stock number:
266146
VIN:
3GTUUEEL2TG226451

Sponsored

2026 GMC Sierra 1500 AT4 Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $75,700

$75,700

Cheyenne, WY
92 mi away
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 w/Kalahari Accents
Transmission:
Automatic
Mileage:
14
Stock number:
G206570
VIN:
1GTUUEE84TZ206570

Sponsored

2026 GMC Sierra 1500 AT4 Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $73,455

$71,899

Loveland, CO
91 mi away
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
Transmission:
Automatic
Mileage:
6
Stock number:
TG188671
VIN:
3GTUUEE86TG188671

Sponsored

2026 GMC Sierra 1500 AT4 Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $75,350

$67,195

Henderson, CO
97 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
8
Stock number:
G260256
VIN:
1GTUUEEL6TZ241499

2026 GMC Sierra 1500 AT4 Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $73,210

$66,055

Henderson, CO
97 mi away
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:
JET BLACK
Transmission:
Automatic
Mileage:
8
Stock number:
G260247
VIN:
3GTUUEE85TG207937

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $73,705

$66,550

Henderson, CO
97 mi away
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:
8
Stock number:
G260248
VIN:
3GTUUEE87TG208023

Preparing for a close up...

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2026 GMC Sierra 1500

New car | MSRP $74,855

$66,700

Henderson, CO
97 mi away
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:
White
Fuel type:
Gasoline
Interior color:
JET BLACK
Transmission:
Automatic
Mileage:
8
Stock number:
G260252
VIN:
1GTUUEEL8TZ238197

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Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $75,645

$67,490

Henderson, CO
97 mi away
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:
Titanium Rush Metallic
Fuel type:
Gasoline
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
1
Stock number:
G260166
VIN:
3GTUUEEL8TG161508

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $73,455

$71,899

Loveland, CO
91 mi away
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
Transmission:
Automatic
Mileage:
3
Stock number:
TG188669
VIN:
3GTUUEE88TG188669

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $73,605

$66,450

Henderson, CO
97 mi away
Year:
2026
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
Fuel type:
Diesel
Interior color:
Jet Black with Kalahari accents
Transmission:
Automatic
Mileage:
4
Stock number:
G260140
VIN:
1GTUUEE87TZ191613

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Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $73,945

$67,621

Longmont, CO
96 mi away
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 number:
L222683
VIN:
1GTUUEE89TZ222683

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2026 GMC Sierra 1500

New car | MSRP $73,680

$69,000

Longmont, CO
96 mi away
Year:
2026
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
Fuel type:
Diesel
Interior color:
Jet Black With Kalahari Accents
Transmission:
Automatic
Mileage:
4
Stock number:
191106
VIN:
1GTUUEE81TZ191106

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $74,600

$69,330

Longmont, CO
96 mi away
Year:
2026
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
Fuel type:
Diesel
Interior color:
Jet Black W/ Kalahari
Transmission:
Automatic
Mileage:
5
Stock number:
L225804
VIN:
1GTUUEE8XTZ225804

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $74,450

$69,694

Longmont, CO
96 mi away
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 A
Transmission:
Automatic
Mileage:
6
Stock number:
L216030
VIN:
1GTUUEE80TZ216030

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Overview
Reviews
FAQs
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.

5 Overall rating

(2 reviews)
Anonymous
5.0
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Sep 08, 2024

The truck had all the features I wanted and the price was in-line, or better with others in my search.

Amjad I
5.0
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Aug 06, 2024

Great prices. The truck that I purchased is in good condition and it looks like that it was serviced.

GMC Sierra 1500 AT4 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 16 and 24 MPG (or MPGe).

What fuel types are available?

Diesel, Gasoline engines are available.

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