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Preproduction model shown throughout with optional features. Actual production model may vary.
MAX
TRAILERING CAPACITY 8,392 KG1
STANDARD
ENHANCED 6.6L V8 ENGINE WITH 10-SPEED ALLISONAUTOMATIC TRANSMISSION
3 YEARS ONSTAR CONNECT PLAN2 INCLUDED
Due to global Semi-Conductor supply shortages and software issues, GM vehicles may not have some standard features and options. Please check with your local GMC dealer to confirm the vehicle’s specifications prior to purchase. Vehicles not equipped with Automatic Stop/Start will be less fuel efficient.
PRO
KEY FEATURES:
SLE
KEY FEATURES:
DENALI
KEY FEATURES:
PRO
Key Features:
SLE
Key features:
DENALI
KEY FEATURES:
Sierra Heavy Duty is the real deal—with the strength and pulling power to haul heavy loads and the most available trailering-assistance technologies
The New 2025 Sierra Heavy Duty offers the most trailering-assistance technologies. This available advanced tech allows you to trailer with enhanced confidence and improved views.
PROGRADETM TRAILERING TECH
UP TO 14 AVAILABLE6 CAMERA VIEWS INCLUDING TRANSPARENT TRAILER VIEW
This advanced suite of available intelligent technologies helps streamline the hitching and towing process with integrated tools that enhance your sense of safety, confidence and visibility.
More views help to provide a more confident trailering experience, such as transparent trailer view, which is now enhanced to enable compatibility with most gooseneck and fifth-wheel trailers.
AVAILABLE CAMERA VIEWS7 INCLUDE:
PROGRADETM TRAILERING TECH
This advanced suite of available intelligent technologies helps streamline the hitching and towing process with integrated tools that enhance your sense of safety, confidence and visibility.
UP TO 14 AVAILABLE CAMERA VIEWS6 INCLUDING TRANSPARENT TRAILER VIEW
More views help to provide a more confident trailering experience, such as transparent trailer view, which is now enhanced to enable compatibility with most gooseneck and fifth-wheel trailers.
AVAILABLE CAMERA VIEWS7 INCLUDE:
Sierra Heavy Duty’s interiors are rugged and refined with premium materials to make every trip first-class
AVAILABLE 16-WAY POWER FRONT SEATS WITH MASSAGING FEATURE
Experience serious comfort everywhere you go in Sierra Heavy Duty’s luxurious seating.
AVAILABLE 10-WAY POWER-ADJUSTABLE FRONT HEATED AND VENTILATED BUCKET SEATS9
Sierra Heavy Duty offers premium front seats with perforated leather appointments.
AVAILABLE 16-WAY POWER FRONT SEATS WITH MASSAGING FEATURE
Experience serious comfort everywhere you go in Sierra Heavy Duty’s luxurious seating.
AVAILABLE 10-WAY POWER-ADJUSTABLE FRONT HEATED AND VENTILATED BUCKET SEATS9
Sierra Heavy Duty offers premium front seats with perforated leather appointments.
Enjoy 3 years of the OnStar Connect Plan2. Experience seamless connectivity that makes every drive better over time with Google Built-In, 4G LTE Wi-Fi, Vehicle Mobile App and more.
12.3" DIAGONAL DIGITAL DRIVER INFORMATION CENTER
AVAILABLE 13.4" DIAG. CENTER TOUCH-SCREEN
TRAVEL IN SIERRA HEAVY DUTY STYLE
Sierra Heavy Duty features an 12.3" diagonal digital Driver Information Center. Control and customize important vehicle, driving and infotainment content with high-resolution clarity.
A 13.4” diagonal tablet-style touch-screen— is the customizable, high-tech center-piece of the cabin.
Configure to your preference—including a “split-screen” view—to get a high-resolution view of such information as:
The spacious, comfortable cabin offers innovative driver-centric technologies such as the Bose12 Premium Sound System with Richbass woofer.
12.3" DIAGONAL DIGITAL DRIVER INFORMATION CENTER
Sierra Heavy Duty features an 12.3" diagonal digital Driver Information Center. Control and customize important vehicle, driving and infotainment content with high-resolution clarity.
AVAILABLE 13.4" DIAG. CENTER TOUCH-SCREEN
A 13.4” diagonal tablet-style touch-screen— is the customizable, high-tech center-piece of the cabin.
Configure to your preference—including a “split-screen” view—to get a high-resolution view of such information as:
TRAVEL IN SIERRA HEAVY DUTY STYLE
The spacious, comfortable cabin offers innovative driver-centric technologies such as the Bose12 Premium Sound System with Richbass woofer.
Requires equipped vehicle, active OnStar plan, and Wi-Fi data plan with carrier. OnStar plans and Wi-Fi data plans not available in all countries. See onstararabia.com for equipped vehicles, service availability and system limitations.
Some elements of Smartphone App may not be available for all models and/or trim levels. Check onstararabia.com for service limitations and charges
Every Sierra Heavy Duty includes active safety and driver-assistance technologies that help while driving and trailering. Sierra HD Pro Safety includes:
Sierra Heavy Duty’s impressive exterior stands out proudly everywhere you go.
NEW LED PROJECTOR HEADLAMPS AND SIGNATURE LIGHTING
New LED projector headlamps with striking animated sequences helps enhance Sierra Heavy Duty’s bold exterior design.
NEW FRONT BUMPER, FASCIA AND AVAILABLE REDESIGNED DENALI CHROME GRILLE
Stand out everywhere you go with Sierra HD Denali’s bold new front end.
AVAILABLE SIX-FUNCTION MULTIPRO TAILGATE
The powerfully innovative available MultiPro™ Tailgate combines six convenient functions that help improve loading, unloading and accessing the cargo bed to make light work of almost any job.
The world’s first six-function GMC MultiPro Tailgate helps improve loading, unloading and accessing the cargo box.
NEW LED PROJECTOR HEADLAMPS AND SIGNATURE LIGHTING
New LED projector headlamps with striking animated sequences helps enhance Sierra Heavy Duty’s bold exterior design.
NEW FRONT BUMPER, FASCIA AND AVAILABLE REDESIGNED DENALI CHROME GRILLE
Stand out everywhere you go with Sierra HD Denali’s bold new front end.
AVAILABLE SIX-FUNCTION MULTIPRO TAILGATE
The powerfully innovative available MultiPro™ Tailgate combines six convenient functions that help improve loading, unloading and accessing the cargo bed to make light work of almost any job.
The world’s first six-function GMC MultiPro Tailgate helps improve loading, unloading and accessing the cargo box.
SPECS
SIERRA 2500 HEAVY DUTY
AVAILABLE MAXIMUM CONVENTIONAL TRAILERING CAPACITY OF UP TO | AVAILABLE MAXIMUM HORSEPOWER 401 |
AVAILABLE MAXIMUM GOOSENECK/FIFTH-WHEEL RATING OF UP TO 8,392 Kg3 | AVAILABLE MAXIMUM TORQUE 629 Nm |
AVAILABLE MAXIMUM PAYLOAD OF UP TO 1,829 Kg3 | AVAILABLE MAXIMUM CARGO BED VOLUME 2,368 Liters13 |
SIERRA 3500 HEAVY DUTY
AVAILABLE MAXIMUM CONVENTIONAL TRAILERING CAPACITY OF UP TO 8,346
Kg
3 | AVAILABLE MAXIMUM HORSEPOWER 401 |
AVAILABLE MAXIMUM GOOSENECK/FIFTH-WHEEL RATING OF UP TO 8,482 Kg3 | AVAILABLE MAXIMUM TORQUE 629 Nm |
AVAILABLE MAXIMUM PAYLOAD OF UP TO 3,151 Kg 3 | AVAILABLE MAXIMUM CARGO BED VOLUME 2368
Liters
13 |
SIERRA 2500 HEAVY DUTY
AVAILABLE MAXIMUM CONVENTIONAL TRAILERING CAPACITY OF UP TO 7,258 Kg3 | AVAILABLE MAXIMUM HORSEPOWER 401 |
AVAILABLE MAXIMUM GOOSENECK/FIFTH-WHEEL RATING OF UP TO 8,392 Kg3 | AVAILABLE MAXIMUM TORQUE 629 Nm |
AVAILABLE MAXIMUM PAYLOAD OF UP TO 1,829 Kg3 | AVAILABLE MAXIMUM CARGO BED VOLUME 2,368 Liters13 |
SIERRA 3500 HEAVY DUTY
AVAILABLE MAXIMUM CONVENTIONAL TRAILERING CAPACITY OF UP TO 8, 346 Kg3 | AVAILABLE MAXIMUM HORSEPOWER 401 |
AVAILABLE MAXIMUM GOOSENECK/FIFTH-WHEEL RATING OF UP TO 8,482 Kg3 | AVAILABLE MAXIMUM TORQUE 629 Nm |
AVAILABLE MAXIMUM PAYLOAD OF UP TO 3,151 Kg3 | AVAILABLE MAXIMUM CARGO BED VOLUME 2,368 Liters13 |
1. To avoid the risk of injury, never use Recovery Hooks to tow a vehicle. For more information, see the Recovery Hooks section of the vehicle Owner’s Manual.
2. OnStar Connected Services and Wi-Fi plans are available in select countries only. Requires an equipped vehicle, active trial or subscription and data plan for Wi-Fi. See onstararabia.com for details.
3. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.
4. Vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay, iPhone, Siri and Apple Music are trademarks of Apple Inc., registered in the U.S. and other countries.
5. Vehicle user interface is a product of Google and its terms and privacy statements apply. Requires the Android Auto app on Google Play and a compatible Android smartphone. Data plan rates apply. You can check which smartphones are compatible at g.co/androidauto/requirements.
6. 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. Some camera views require available accessory camera and installation. Not compatible with all trailers. See your dealer for details.
7. Requires compatible trailer. Some camera views require available accessory camera and installation. Not compatible with all trailers. See your dealer for details
8. Safety or driver-assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Read the vehicle Owner’s Manual for more important feature limitations and information.
9. Due to global Semi-Conductor supply shortages, GM vehicles may not have some standard features and options. Please check with your local GMC dealer to confirm the vehicle’s specifications prior to purchase. Vehicles not equipped with Automatic Stop/Start will be less fuel efficient.
10. Google built-in services are subject to limitations, and availability may vary by vehicle, infotainment system and location. Certain Google actions and functionalities may require account linking. User terms and privacy statement apply. Google, Google Play and Google Maps are trademarks of Google LLC.
11. GMC Infotainment System functionality varies by model. Full functionality requires compatible Bluetooth and smartphone, and USB connectivity for some devices
12. Bose® is a registered trademark of the Bose Corporation in the U.S. and other countries.
13. Cargo and load capacity limited by weight and distribution.
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