If you’re searching for a powerful diesel truck with premium comfort and real off-road capability, the 2023 GMC Sierra 1500 AT4 with the 3.0L Duramax Turbo-Diesel delivers the perfect combination of torque, technology, and rugged style.

Built for drivers who want more than just a pickup, the Sierra AT4 blends bold GMC design with serious capability. Its aggressive stance, signature AT4 badging, off-road suspension, and factory lift give it a commanding presence whether it’s on the highway, the jobsite, or deep off the pavement.

Under the hood, the 3.0L Duramax Turbo-Diesel engine delivers impressive performance with 305 horsepower and 495 lb-ft of torque, paired with a smooth 10-speed automatic transmission for confident towing, hauling, and highway cruising.

Diesel power also brings exceptional efficiency for a full-size truck, making the Sierra AT4 a favorite for drivers who want strong torque, long driving range, and excellent fuel economy.

Designed for adventure, the AT4 trim includes off-road suspension, skid plates, a two-speed transfer case, hill descent control, and advanced traction management, giving you confidence on trails, dirt roads, snow, and tough terrain.

Inside, the Sierra 1500 AT4 interior combines rugged capability with premium comfort. You’ll find leather-appointed seating, advanced driver technology, a large touchscreen infotainment system, smartphone connectivity, and modern driver-assist safety features designed to keep you connected and in control wherever the road takes you.

Drivers searching for:

2023 GMC Sierra 1500 AT4 Duramax for sale

Sierra AT4 diesel truck

3.0 Duramax Sierra 1500

off-road GMC truck near me

diesel pickup with towing capability

premium full-size 4x4 truck

…will quickly see why the GMC Sierra AT4 is one of the most sought-after diesel trucks on the market.

The 2023 GMC Sierra 1500 AT4 with the 3.0L Duramax Diesel isn’t just built to work—it’s built to explore, tow with confidence, and make every drive feel like an upgrade.

Come see it in person today and experience the power, capability, and premium feel that make the Sierra AT4 one of the most impressive trucks on the road.

Options:

Navigation System

AT4 Preferred Package

AT4 Premium Package

Preferred Equipment Group 4SB

Trailering Package

2 USB Ports

7 Speakers

AM/FM radio

Premium audio system: GMC Infotainment System

Premium Bose 7-Speaker Sound System

Radio data system

Radio: Premium GMC Infotainment Audio System

SiriusXM w/360L

Steering Wheel Audio Controls

Air Conditioning

Automatic temperature control

Electric Rear-Window Defogger

Front dual zone A/C

Rear window defroster

120-Volt Bed Mounted Power Outlet

120-Volt Instrument Panel Power Outlet

Driver Memory

Memory seat

Power driver seat

Power Front Passenger Windows w/Express Up/Down

Power Front Windows w/Driver Express Up/Down

Power Rear Windows w/Express Down

Power steering

Power windows

Push Button Start

Remote keyless entry

Remote Vehicle Starter System

Steering wheel mounted audio controls

Universal Home Remote

Auto-Locking Rear Differential

Off-Road Suspension

Power Rake & Telescoping Steering Column

Speed-sensing steering

Traction control

4-Wheel Disc Brakes

ABS brakes

Dual front impact airbags

Dual front side impact airbags

Electrical Steering Column Lock

Emergency communication system: OnStar and GMC connected services capable

Front anti-roll bar

Front wheel independent suspension

Keyless Open & Start

Low tire pressure warning

Not Equipped w/Steering Column Lock

Occupant sensing airbag

Overhead airbag

Power Door Locks

Brake assist

Electronic Stability Control

Hill Descent Control

Auto High-beam Headlights

Delay-off headlights

Front fog lights

Fully automatic headlights

Perimeter Lighting

Panic alarm

Security system

Theft Deterrent System (Unauthorized Entry)

Adaptive Cruise Control

Speed control

220 Amp Alternator

Block heater

Engine Block Heater

Heavy-Duty Air Filter

Auto-dimming door mirrors

Black Chrome Header & Grille Insert Bars

Bumpers: body-color

Front License Plate Kit

Heated door mirrors

IntelliBeam Automatic High Beam On/Off

LED Cargo Area Lighting

Off-Road High Clearance Step (LPO)

Power door mirrors

Rear step bumper

Rear Wheelhouse Liners

Spray-On Pickup Bed Liner w/AT4 Logo

2 Charge/Data USB Ports Inside Center Console

2 Type-C Charge-Only Rear USB Ports

Apple CarPlay/Android Auto

Auto-dimming Rear-View mirror

Automatic Emergency Braking

Buckle to Drive

Color-Keyed Carpeting Floor Covering

Compass

Driver door bin

Driver vanity mirror

Floor-Mounted Center Console

Following Distance Indicator

Forward Collision Alert

Front & Rear Park Assist

Front Pedestrian Braking

Front Prem Floor Liners w/Removable Carpet Insert

Front reading lights

GMC Connected Access Capable

HD Surround Vision

Heated steering wheel

Illuminated entry

Lane Keep Assist w/Lane Departure Warning

OnStar & GMC Connected Services Capable

Outside temperature display

Overhead console

Passenger vanity mirror

Rear Cross Traffic Braking

Rear Pedestrian Detection

Rear Prem Floor Liners w/Removable Carpet Insert

Rear reading lights

Rear seat center armrest

Safety Alert Seat

Tachometer

Telescoping steering wheel

Tilt steering wheel

Trailer Camera Provisions

Trailer Side Blind Zone Alert

Trip computer

Voltmeter

Wi-Fi Hotspot Capable

Wireless Charging

Wireless Phone Projection

10-Way Power Driver Seat Adjuster w/Lumbar

10-Way Power Passenger Seat Adjuster w/Lumbar

Front Bucket Seats

Front Center Armrest

Heated 2nd Row Outboard Seats

Heated Driver & Front Outboard Passenger Seating

Heated front seats

Heated rear seats

Perforated Front Leather Seat Trim

Power passenger seat

Split folding rear seat

Ventilated Driver & Front Passenger Seats

Ventilated front seats

Passenger door bin

Hitch Guidance

Hitch Guidance w/Hitch View

In-Vehicle Trailering App

Integrated Trailer Brake Controller

Red Recovery Hooks

18" x 8.5" Machined Aluminum Wheels

Alloy wheels

Deep-Tinted Glass

Front Rainsensing Wipers

Power Sliding Rear Window w/Rear Defogger

Rain sensing wipers

Variably intermittent wipers

3.23 Rear Axle Ratio