Preproduction model shown throughout with optional features. Actual production model may vary.

2025
SIERRA HEAVY DUTY

2500 & 3500 HEAVY DUTY PICKUP TRUCKS

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KEY FEATURES

MAX
TRAILERING CAPACITY 8,392 KG^§

STANDARD

ENHANCED 6.6L V8 ENGINE WITH 10-SPEED ALLISON
AUTOMATIC TRANSMISSION

3 YEARS ONSTAR CONNECT PLAN^§ 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.

EXPLORE SIERRA HEAVY DUTY TRIMS

PRO

STARTING AT XXX,XXX^§

KEY FEATURES:

Standard 6.6L V8 Engine with Allison® 10-Speed Automatic Transmission
Standard LED Headlamps and Daytime Running Lamps
Standard Trailering Package and Trailering Mirrors^§
Heavy-Duty Cargo Bed Volume
Standard Wireless Apple CarPlay®^§ and Wireless Android Auto^TM§ Compatibility
Available MultiPro^TM Tailgate
Standard Cruise Control
3 Years OnStar Connect Plan^§

OnStar Wi-Fi trial for 3GB/90 days (whichever comes first)

SLE

STARTING AT XXX,XXX^§

KEY FEATURES:

Standard 6.6L V8 Engine with Allison® 10-Speed Automatic Transmission
Standard 13.4" Diagonal Center Touch-Screen and 12.3" Diagonal Driver Information Center
Standard Wireless Apple CarPlay®^§ and Wireless Android Auto^TM§ Compatibility
Available MultiPro^TM Tailgate
Animated Lighting for The Headlamps, Taillamps, and Turn Signals
Standard 230-volt bed -mounted power outlet
Front and Rear Park Assist is added in Driver Safety Package
Power Sunroof
Universal Home Remote
3 Years OnStar Connect Plan^§

OnStar Wi-Fi trial for 3GB/90 days (whichever comes first)

DENALI

STARTING AT XXXXX^§

KEY FEATURES:

Standard 6.6L V8 Engine with Allison® 10-Speed Automatic Transmission
13.4" Diagonal Center Touch-Screen, 12.3" Diagonal Digital Driver Information Center and Available Multicolor 15" Diagonal Head-Up Display
Denali-Exclusive Authentic Open-Pore Wood, Patterned Aluminum Trim and Forge Perforated Leather Seating Surfaces
Standard Adaptive Cruise Control
Spray-on Bedliner will have GMC Logo on back wall
Power Sunroof
Universal Home Remote
3 Years OnStar Connect Plan^§

OnStar Wi-Fi trial for 3GB/90 days (whichever comes first)

THE POWER TO PULL YOUR WORLD

Sierra Heavy Duty is the real deal—with the strength and pulling power to haul heavy loads and the most available trailering-assistance technologies

6.6L V8 10-SPEED AUTOMATIC TRANSMISSION OFFERS:

629 Nm of Torque and 401 hp
Up to 25% Increase in Low-End Torque Over the Previous Model Year
Increased Power and Torque Over the Entire Operating Speed Range
Enhanced Exhaust Brake Performance for Improved Control When Towing
Improved Engine Braking with a More Powerful Turbo Vane Actuator and Uprated Valve Springs

SIERRA HEAVY-DUTY ADVANCED TRAILERING^§

The New 2025 Sierra Heavy Duty offers the most trailering-assistance technologies, and this available advanced tech allows you to trailer with enhanced confidence and improved views.

PROGRADE^TMTRAILERING 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.

Trailer Tire Pressure^§ and Temperature Monitoring
Trailer Side Blind Zone Alert^§
Trailer Sway Control
Trailer Length Indicator^§
Trailer Brake Controller
Trailer Angle Indicator with Jack-Knife Alert^§
Gross Combined Weight (GCW) Alert^§
Trailer Light Test
Trailer Theft Detection
Maintenance Reminders
Auto Electric Parking Brake
Create and Customize Trailer Profiles
Tow/Haul Mode Reminder
Predeparture Checklists
Tow/Haul Mode
Trailering Mirrors

UP TO 14 AVAILABLE CAMERA VIEWS^§

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 VIEWS^§ INCLUDE:

Enhanced Transparent Trailer View^§
Hitch View
Cargo Bed View (With Zoom View and Hitch Guidelines)
Front Camera View
Rear Camera View
Surround View
Front Top-Down View
Rear Top-Down View
Front Side View
Rear Side View^§ (With Trailer Biasing)
Rear Trailer View^§ (With Guidelines and Trailer Angle Indicator)
Inside Trailer View^§
Picture-In-Picture View^§
Rear Camera Mirror^§

PREMIUM INTERIORS

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 SEATS^§Sierra Heavy Duty offers premium front seats with perforated leather appointments.

ADVANCED TECHNOLOGY

Enjoy 3 years of the OnStar Connect Plan^§. Experience seamless connectivity that makes every drive better over time with Google Built-In, 4G LTE Wi-Fi, Vehicle Mobile App and more.

Preproduction model shown throughout with optional features. Actual production model may vary.

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:

Google built-in Compatibility^§ powered by OnStar
Wireless Apple CarPlay^® Compatibility^§
Wireless Android Auto^TM Compatibility^§
GMC Infotainment System^§ and more

TRAVEL IN SIERRA HEAVY DUTY STYLE

The spacious, comfortable cabin offers innovative driver-centric technologies such as the Bose^§ Premium Sound System with Richbass woofer

CONNECTED TO ELEVATE YOUR SIERRA’S OWNERSHIP

OnStar Connected Services^§ supports features that simplify ownership and keep you in tune with your new GMC. Enjoy 3 years on us of the OnStar Connect Plan. Use Remote Commands through your myGMC App^§. and get features that help you locate your vehicle or check its status through your App. Also get 10 years of standard connectivity for free to stay on top of the health of your vehicle.

MYGMCAPP

VEHICLE
STATUS

ON-DEMAND
DIAGNOSTICS

EXPLORE MORE CONNECTED BENEFITS

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.

SAFETY

SIERRA HD PRO SAFETY^§

Every Sierra Heavy Duty includes active safety and driver-assistance technologies that help while driving and trailering. Sierra HD Pro Safety includes:
Forward Collision Alert
Following Distance Indicator
Front Pedestrian Braking
IntelliBeam
Lane Departure Warning
Buckle to Drive
Automatic Emergency Braking

POWERFULY BOLD EXTERIOR

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.