Sierra AT4

Sierra HD Comes With:

  • Option 1: Manufacturer 3 years/100,000km warranty – whichever comes first (Additional 2-year optional warranty available)*
  • Option 2: Manufacturer 3 years/100,000km warranty – whichever comes first (Additional 2-year optional warranty and additional 50,000 KM available)*

*Please contact your local dealership for more information.

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The purpose-built exterior of the Next Generation Sierra HD Truck pairs functional design with exclusive style. 

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*The displayed color options are for illustrative purposes and do not indicate the full range of options. To know more, about the complete range of color options please check with your local dealer.

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Side BedStep

The standard Side BedStep located just in front of the rear wheel arches complements the large CornerStep rear bumper to provide easier access when grabbing equipment from the cargo bed.

Heavy Duty Cargo Bed 

  • Roll-formed high-strength steel bed
  • Durable spray-on bedliner
  • 12 cargo tie-dows (227-kg rating per corner)
  • Heavy-duty cargo box

Advanced LED Lighting

  • High-intensity LED headlamps
  • LED tail lamps
  • LED daytime running lamps
  • LED fog lamps
  • LED cargo bed lighting
  • LED cargo lamp
  • LED roof marker lamps
  • Wheel molding arch lamps over each wheel

20" Polished Aluminum Wheels

The distinct style of 20" multidimensional polished aluminum wheels comes standard on 2500 and 3500 Single Rear Wheel (SRW) models. For additional strength and premium style, the Double Rear Wheel (DRW) models feature standard 17" Forged polished aluminum wheels.


Power-adjustable Chrome capped trailering mirrors that power fold, extend and retract at the touch of a button. The door mounted mirrors offer the following features to help improve visibility while trailering:

  • Heated and auto-dimming upper glass (driver and passenger)
  • Power extend/retract and fold
  • Lower convex mirrors
  • LED turn signal indicators/clearance lamps
  • LED perimeter lighting
  • LED rear guidance lamps
  • LED forward auxiliary task lighting


A refined cabin offers advanced technology to help ensure a comfortably smart ride in this Heavy Duty truck.

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US model shown. Actual model may vary. Please refer to the local Dealer for details.

Front Headroom and Legroom

Enjoy elevated views from a cabin featuring up-to 1092 mm of front headroom and 1,130 mm of front legroom.

Elevated Driver Seating

An elevated driver seat offers cushions that provide support during long hauls and while towing.

Premium Comfort

  • Leather wrapped heated steering wheel
  • Heated and Ventilated front seats
  • Enhanced HVAC system with rear-seat outlets
  • Heated rear outboard seating

Bose® Premium Sound System

The 1Bose® Premium Sound system supplies impressive sound through seven different speakers and a rich bass subwoofer.

1. Bose is a registered trademark of Bose Corporation.

Innovative Cargo Solutions

Convenient and spacious storage solutions include rear seatback storage and a centre console large enough to fit hanging folders or a laptop.

Exclusive Interior Design

The durable interior features perforated Forge leather-appointed seating and authentic open-pore ash wood, brushed aluminum trim, chrome accents and premium carpeted floor mats.


The Sierra HD pickup truck offers up to 7,394 KG of max towing. It’s built strong so you can tow strong with a larger drive shaft and rear axle that increase durability and strength. A bigger grille and engine fan help improve engine cooling. Improved brakes and steering offer superior control.

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  • 401 Horsepower
  • 629 N-m of torque
  • Compression Ratio of 10.75:1
  • Valve Train: overhead-valve, two valves per cylinder, variable valve timing

2-Speed AutoTrac Transfer Case

The first heavy duty truck in its class to offer a 2 speed AutoTrac™ transfer case with an active automatic 4WD drive setting provides seamless shifting between two- and four-wheel drive based on road conditions.

Auto Electric Parking Brake

To help with positioning, after backing up to a trailer hitch using Hitch View, Sierra Heavy Duty will automatically apply the parking brake upon shifting into Park to avoid unintentional rolling.

6-Speed Heavy-Duty Automatic Transmission

The heavy-duty 6-speed automatic transmission allows the engine to operate in an optimal range at all times with varying load and terrain conditions. This, combined with fortified components used throughout Sierra Heavy Duty’s driveline, provides maximum torque to the wheels at all times.

Park Grade Hold Assist

Prevents movement when shifting out of park on a hill and moving a foot from brake to accelerator pedal by automatically applying brakes at each wheel for an extended period of time.

Traction Select System With Tow/Haul Mode

The Traction Select System allows you to quickly switch between multiple traction configurations, including Off-Road mode and Tow/Haul mode, to optimize powertrain calibrations, traction control settings and stability control system calibrations for a variety of terrain and driving conditions. The system will retain the tow/haul setting configurations for up to 4 hours after the vehicle is turned off, eliminating the need to re-engage the system when returning from a brief stop or a long journey.

Available 15 camera views1

A system of camera technologies that streamline the hitching and towing process that help you tow with commanding control.

1. Read the vehicle Owner’s Manual for important feature limitations and information. Some camera views require available accessory camera and installation. Not compatible with all trailers. See your dealer for details.


Segment-leading technology delivers a premium driving experience with advanced connectivity and convenience in this Heavy Duty truck.

 Available Multicolor 15" Diagonal Head-Up Display 3

A multicolor 15" diagonal Head-Up Display, the first in a heavy-duty pickup, helps you keep your eyes on the road by conveniently projecting key information directly onto the windshield such as:

  • Speed
  • Tachometer
  • Audio
  • Phone
  • Available Navigation1
  • Forward Collision Alert2 5
  • Lane Departure Warning5
  • Cruise Control5
  • Low Fuel
  • Off-road inclinometer that measures fore-and-aft tilt, front tire angle and left-and- right tilt

Available Surround View

One of the available 15 camera views Surround View provides you with a high-resolution overhead bird’s-eye view around the vehicle to help avoid obstacles, reduce blind spots and navigate tight spaces.

Available Rear Camera Mirror 5

One of the available 15 camera views Rear Camera Mirror is a dual-function mirror that can be used as a conventional rear-view mirror or as a camera-based rear-view mirror to help you see around potential visual obstructions inside the vehicle and cargo box.

4Apple CarPlay®  Compatibility

With Apple CarPlay® compatibility, you can access Apple Music™ and Apple MapsTM, make hands-free phone calls, send messages and more.

Android Auto™ Ready

Android AutoTM Ready compatibility seamlessly connects your compatible smartphone so you can get directions using Google Maps, listen to music via Google Play Music and more.

  1. Check with your local GMC dealer for available Map coverage in your country.
  2. Read the vehicle Owner’s Manual for important feature limitations and information.
  3. Functionality varies by model. Full functionality requires compatible Bluetooth® and smartphone, and USB connectivity for some devices.
  4. Vehicle user interface is a product of Apple and Apple’s terms and privacy statements apply. Requires compatible smartphone and data plan rates apply.
  5. Safety or driver-assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Visibility, weather and road conditions may affect feature performance. Read the vehicle Owner’s Manual for more important feature limitations and information.


Available safety technologies provide driver-centric alerts to help enhance your awareness of the road and surrounding vehicles.

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Forward Collision Alert

Forward Collision Alert can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. The system can also alert you if you are following a detected vehicle much too closely.

Rear Cross Traffic Alert

Rear Cross Traffic Alert can alert you to detected left- or right-cross traffic behind you when in Reverse.

Front and Rear Park Assist

Front and Rear Park Assist provides distance alerts to nearby detected objects to help you park and avoid objects at low speeds.

Lane Departure Warning

Lane Departure Warning can provide alerts to help you avoid crashes due to unintentionally drifting out of your lane when your turn signal is not activated.

Safety Alert Seat

Safety Alert Seat provides you the option of getting seat vibration pulses on the seat-bottom instead of beeps for crash avoidance alerts.

Following Distance Indicator

Following Distance Indicator can provide you with the following gap time (or headway) to a moving vehicle you are detected to be following to help you know if you are following much too closely.

Enhanced Automatic Emergency Braking

Automatic Emergency Braking operates below 80 km/h, and can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. It also can help reduce the collision’s severity or avoid the collision by automatically applying brakes if you have not already, or by enhancing driver braking.

*Safety features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Read the Owner’s Manual for more important safety information.

* Always use safety belts and the correct child restraint for your child’s age and size, even with air bags. Even in vehicles equipped with the Passenger Sensing System, children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. Never place a rear-facing infant restraint in the front seat of any vehicle equipped with an active frontal air bag. See the Owner’s Manual and the child safety seat instructions for more safety information.

* Prices shown here are for the base trims respectively without any dealer added packages, offers, equipment or accessories. Available at extra charge.