http://schema.org/NewCondition 2025 GMC 1GT4UREY2SF260764 Denali

2025
GMC SIERRA 2500HD DENALI 4X4 CREW CAB 6.75 FT. BOX (5SA)

Price

$123,914

123 914 $


Final Price

Price does not include taxes and licensing fees.

$123,914

Term (mo.)

Frequency

Price

$123,914

123 914 $


Final Price

Price does not include taxes and licensing fees.

$53,745

Finance For (2.99%)

$19.988 x 84 Months @ 6.49% APR (estimated financing rate, cost of borrowing $4,907).
Plus taxes and license.

$776 / mo

Term (mo.)

Frequency

Price

$123,914

123 914 $


Final Price

Price does not include taxes and licensing fees.

$53,745

Lease For (2.99%)

$19.988 x 84 Months @ 6.49% APR (estimated financing rate, cost of borrowing $4,907).
Plus taxes and license.

$776 / mo

Seaway Chevrolet Buick GMC Ltd

  Request Information  +1-844-937-1785

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Power Meets Prestige: The 2025 GMC Sierra 2500HD Denali in Black

When you're in the market for a heavy-duty truck that doesn't just get the job done—but turns heads doing it—look no further than the 2025 GMC Sierra 2500HD Denali, now available at Seaway GM in Cornwall, Ontario. With its bold black exterior, powerhouse Duramax® Turbo-Diesel V8 engine, and a cabin loaded with premium tech, this Sierra 2500HD is built for those who demand strength, sophistication, and smarts—all in one uncompromising package.


Why This Sierra 2500HD Denali Deserves a Spot in Your Driveway

This isn’t just another pickup. The 2025 Sierra 2500HD Denali is a full-force diesel-powered workhorse with the elegance of a luxury SUV. Under the hood, a 6.6L Duramax® Turbo-Diesel V8 roars to life, paired with a smooth-shifting 10-speed Allison® automatic transmission and 4WD capability. Whether you’re pulling heavy loads across Stormont County or heading up for a weekend in Glengarry, this truck will do it with effortless authority. Add in a premium Bose® 12-speaker sound system, a class-leading 13.4" touchscreen, and heated/ventilated leather seats—and you’ve got a truck that works hard and plays even harder.


A Bold Exterior Built to Impress

From the moment you lay eyes on its 20" High Gloss Black wheels and signature chrome Denali grille, you’ll know this Sierra is something special. LED projector headlamps with animated lighting sequences not only illuminate your way through Dundas County’s rural roads but also signal unmistakable GMC prestige. A power sunroof adds a touch of elegance, while the factory spray-on bedliner with a stamped GMC logo stands ready for real work. The look is aggressive, modern, and unmistakably Denali.


Refined Comfort on the Inside

Step into the cabin and you're greeted by true craftsmanship. Denali-exclusive open-pore wood and patterned aluminum trim elevate the space beyond standard truck interiors. Enjoy 12-way power-adjustable front seats that are both heated and ventilated—perfect for frosty Eastern Ontario mornings or hot summer hauls. Dual-zone climate control keeps everyone comfortable, and a heated steering wheel makes those chilly Cornwall commutes a little more bearable. It’s not just a truck—it’s your mobile sanctuary.


Packed with Safety and Tech That Thinks Ahead

The 2025 Sierra 2500HD Denali doesn’t just protect—it anticipates. With Forward Collision Alert, Lane Departure Warning, and Front Pedestrian Braking, you're in safe hands whether you're navigating the streets of Ingleside or towing through Maxville. The Transparent Trailer View is a game-changer for anyone who tows regularly, while Adaptive Cruise Control makes long drives on Highway 401 feel like a breeze. It’s everything you want in a modern truck, with the brains to match the brawn.


Why It Beats the Competition

When stacked against other heavy-duty contenders like the Ford F-250 Platinum or the Ram 2500 Limited, the Sierra 2500HD Denali holds its ground—and then some. Its seamless tech integration with wireless Apple CarPlay® and Android Auto™, coupled with the unmatched sound quality of a 12-speaker Bose® system, sets it apart. Remote Start and a wireless charging pad make daily life easier, and its commanding presence simply can’t be ignored. It’s the smarter, sleeker choice for truck buyers in the Seaway Valley.


Why Buy from Seaway GM in Cornwall

At Seaway Chevrolet Buick GMC, you’re not just buying a vehicle—you’re joining a legacy of trust, experience, and community. With over 35 years in the business, Dealer Principal André Lapointe and his expert team have been helping drivers from Cornwall to Chesterville find the perfect vehicle. From top-tier service to flexible financing (even if you’ve had a credit hiccup), Seaway GM is your one-stop destination for everything automotive in Eastern Ontario.


Picture Yourself Behind the Wheel

Imagine cruising through the St. Lawrence River corridor in your brand-new Sierra 2500HD Denali, the sunroof open, diesel power at your command, and your favourite tunes playing through the Bose® speakers. Whether you're towing your trailer to the cottage or just heading to the jobsite in Morrisburg, this truck feels like it was made just for you. But reading about it is one thing—driving it is another experience entirely.


Book Your Test Drive Today!

Don’t just dream about power and luxury—experience it firsthand. Click below to schedule your test drive of the 2025 GMC Sierra 2500HD Denali at Seaway GM in Cornwall. Your next great drive starts here.

👉 Book a Test Drive Now 👈


Body Style: Pickup
Engine: 6.6L 8cyl
Mileage: 10 km
Exterior Colour: Black
Interior Colour: Black
Fuel Type: Diesel
Transmission: Automatic
Drivetrain: 4x4
Stock #: 25317
VIN: 1GT4UREY2SF260764
Trim Details: Denali 4x4 Crew Cab 6.75 ft. box

Remote Vehicle Starter System
Front Bucket Seats 12-Way Power Driver Seat Adjuster w/Lumbar 12-Way Power Passenger Seat Adjuster w/Lumbar Includes massage. Driver Memory Recalls driver presets for power driver seat and outside mirrors.
Heated 2nd Row Outboard Seats
X31 Off-Road Package Includes twin-tube Rancho shocks.Hill Descent Control Off-Road Suspension Includes twin-tube shocks. Skid Plates Protect the oil pan, front axle and transfer case.
Rear Wheelhouse Liners
Unauthorized Entry Theft-Deterrent System
Polished Exhaust Tip (LPO) Dealer installed.
SiriusXM w/360L Trial Subscription SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. Certain features and/or content may not be available unless an active data connection is enabled in the vehicle. Content varies by SiriusXM subscription plan. Features and display may vary by vehicle. All SiriusXM services require a subscription, sold separately by SiriusXM after the trial period. Your SiriusXM service will automatically stop at the end of your trial unless you decide to subscribe. If you decide to continue service after your trial, the subscription plan you choose will continue for an indeterminate term and you will be charged according to your chosen payment method at the then-current rates unless and until you cancel. Taxes apply. Please see the SiriusXM customer agreement at siriusxm.ca/terms for complete terms and how to cancel, which includes calling SiriusXM at 1-888-539-7474. All rates, content, and programming are subject to change. SiriusXM uses personal information in accordance with SiriusXM privacy policy, available at siriusxm.ca/privacy. SiriusXM Canada Inc. (SiriusXM), the SiriusXM logo, channel names and logos are trademarks of Sirius XM Radio Inc. and are used under license.
Forge Perforated Leather-Appointed Front Seat Trim
OnStar Services Capable See onstar.ca for details and limitations. Services vary by model. Service plan required.
Trailer Side Blind Zone Alert
LED Smoked Amber Roof Marker Lamps
Transmission: Allison 10-Speed Automatic
Signature Chrome Denali Grille
LED Cargo Area Lighting Located in cargo bed activated with switch on centre switch bank or key fob.
Wireless Charging
120-Volt Instrument Panel Power Outlet 400 watts shared with (KC9) bed mounted power outlet.
ProGrade Trailering System Hitch Guidance w/Hitch View Includes image adjustment and pan/zoom/tilt. In-Vehicle Trailering System App Includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and trailer tire pressure monitor system module. Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitoring sensors are installed.

HD Surround Vision Provides the driver with an overhead view of the scene around the vehicle on a centre stack display. Includes front camera washer.
Electric Rear-Window Defogger
Power Front Passenger Windows w/Express Up/Down
Rear Cross Traffic Alert
Keyless Open & Start Includes remote keyless entry.
Front Rain-Sensing Wipers
Ultrasonic Front & Rear Park Assist
Deep-Tinted Glass
2 Charge/Data USB Ports Inside Centre Console
Bed View Camera w/2 Trailer Camera Provisions Includes camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen.
Wireless Phone Projection For Apple CarPlay and Android Auto.
Ventilated Driver & Front Passenger Seats
Radio: AM/FM w/Premium GMC Infotainment System Includes 13.4" diagonal multicolour touch-screen, Google built in apps such as navigation and voice assistance, multi-touch display, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones.
Tires: LT275/65R20 AT BW
Steering Wheel Audio Controls
Heated Driver & Front Outboard Passenger Seats
120-Volt Bed Mounted Power Outl


Axle RatiosMSRP
3.42 Rear Axle Ratio$00 $

Body
Pickup Box - Includes bed assist step.$00 $

DIO - Wheel Type
Wheels: 20" High Gloss Black Painted (LPO) - Dealer installed. (50.8 cm). LPO wheels will come with 4 aluminum 20" transit wheels from the factory with alignment specs set to 20" LPO wheel selected. Wheels: 20" Transit Aluminum For LPO 20" wheels and tires.$3,9403940 $

Engine
Engine: Duramax 6.6L Turbo-Diesel V8 - B20-Diesel compatible. Capped Fuel Fill 220-Amp Alternator Dual Heavy-Duty 70 Amp Battery Includes 730 cold-cranking amps, maintenance-free with rundown protection and retained accessory power. Winter Grille Cover Exhaust Brake Engine Block Heater 3.42 Rear Axle Ratio Transmission: Allison 10-Speed Automatic (MGM)$10,99510995 $

Engine Equipment
Engine Block Heater$195195 $
Dual 220-Amps Primary/170-Amps Aux Alternators$265265 $

Exterior Ornamentation
Power-Retractable Assist Steps - Includes LED perimeter lighting and bright accent.$1,7251725 $
Front License Plate Mount BC/MB/ON - Included for vehicles shipped to British Columbia, Manitoba and Ontario.$00 $
Black Front & Rear Moulded Splash Guards (LPO) - Dealer installed.$300300 $

Floor Covering
All-Weather Floor Liners (LPO) - Dealer installed. Includes 1st and 2nd rows. Replaces factory floor mats.$340340 $

GVWR/Payload
GVWR: 5,148 kgs (11,350 lbs)$00 $

Marketing Option Package
Preferred Equipment Group 5SA - Engine: 6.6L V8 w/Direct Injection & VVT Heavy-Duty 80 Amp Battery Includes 720 cold-cranking amps, maintenance-free with rundown protection and retained accessory power. GVWR: 4,921 kgs (10,850 lbs) Transmission: Allison 10-Speed Automatic 3.73 Rear Axle Ratio Front Bucket Seats 12-Way Power Driver Seat Adjuster w/Lumbar 12-Way Power Passenger Seat Adjuster w/Lumbar Includes massage. Driver Memory Recalls driver presets for power driver seat and outside mirrors. Forge Perforated Leather-Appointed Front Seat Trim Wheels: 20" Ultra Bright Machined (50.8 cm). Includes bright chrome inserts and black painted pockets. Tires: LT275/65R20 AT BW Radio: AM/FM w/Premium GMC Infotainment System Includes 13.4" diagonal multicolour touch-screen, Google built in apps such as navigation and voice assistance, multi-touch display, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones. Sierra HD Pro Safety Forward Collision Alert Following Distance Indicator Front Pedestrian Braking IntelliBeam Automatic High Beam On/Off Lane Departure Warning Buckle to Drive Prevents vehicle from being shifted out of park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use. Automatic Emergency Braking Safety Alert Seat Rear Cross Traffic Alert Trailer Side Blind Zone Alert Wireless Phone Projection For Apple CarPlay and Android Auto. Bose Premium 7-Speaker Sound System Includes Richbass woofer. SiriusXM w/360L Trial Subscription SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. Certain features and/or content may not be available unless an active data connection is enabled in the vehicle. Content varies by SiriusXM subscription plan. Features and display may vary by vehicle. All SiriusXM services require a subscription, sold separately by SiriusXM after the trial period. Your SiriusXM service will automatically stop at the end of your trial unless you decide to subscribe. If you decide to continue service after your trial, the subscription plan you choose will continue for an indeterminate term and you will be charged according to your chosen payment method at the then-current rates unless and until you cancel. Taxes apply. Please see the SiriusXM customer agreement at siriusxm.ca/terms for complete terms and how to cancel, which includes calling SiriusXM at 1-888-539-7474. All rates, content, and programming are subject to change. SiriusXM uses personal information in accordance with SiriusXM privacy policy, available at siriusxm.ca/privacy. SiriusXM Canada Inc. (SiriusXM), the SiriusXM logo, channel names and logos are trademarks of Sirius XM Radio Inc. and are used under license. Floor-Mounted Centre Console Includes cup holders, cell phone storage, power cord management and hanging file folder capability. Electric Rear-Window Defogger Push Button Start Remote Vehicle Starter System Keyless Open & Start Includes remote keyless entry. OnStar Services Capable See onstar.ca for details and limitations. Services vary by model. Service plan required. 120-Volt Instrument Panel Power Outlet 400 watts shared with (KC9) bed mounted power outlet. 120-Volt Bed Mounted Power Outlet 400 watts shared with (KI4) instrument panel mounted power outlet. 2 Charge-Only Rear USB Ports 2 USB Ports Located on 1st row console. 2 Charge/Data USB Ports Inside Centre Console HD Surround Vision Provides the driver with an overhead view of the scene around the vehicle on a centre stack display. Includes front camera washer. Bed View Camera w/2 Trailer Camera Provisions Includes camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen. Trailer Cam Provisions & Trailer Viewing Software Spray-On Pickup Bedliner w/GMC Logo Does not include spray-on liner on tailgate due to black composite inner panel. Heated Driver & Front Outboard Passenger Seats Ventilated Driver & Front Passenger Seats Heated 2nd Row Outboard Seats Deep-Tinted Glass Steering Wheel Audio Controls Signature Chrome Denali Grille Manual Tilt-Wheel/Telescoping Steering Column Unauthorized Entry Theft-Deterrent System Universal Home Remote LED Smoked Amber Roof Marker Lamps LED Cargo Area Lighting Located in cargo bed activated with switch on centre switch bank or key fob. Power Sliding Rear Window w/Defogger Power Front Passenger Windows w/Express Up/Down Wireless Charging Ultrasonic Front & Rear Park Assist Rear Wheelhouse Liners Front Rain-Sensing Wipers X31 Off-Road Package Includes twin-tube Rancho shocks. Hill Descent Control Skid Plates Protect the oil pan, front axle and transfer case. Off-Road Suspension Includes twin-tube shocks. Polished Exhaust Tip (LPO) Dealer installed. ProGrade Trailering System Hitch Guidance w/Hitch View Includes image adjustment and pan/zoom/tilt. In-Vehicle Trailering System App Includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and trailer tire pressure monitor system module. Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitoring sensors are installed. 2-Speed Active Transfer Case Electronic Autotrac with push button control.$00 $

Option GroupMSRP
GMC Protection Package (LPO) - Dealer installed. All-Weather Floor Liners (LPO) Dealer installed. Includes 1st and 2nd rows. Replaces factory floor mats. Black Front & Rear Moulded Splash Guards (LPO) Dealer installed.$640640 $

Radio Type
Radio: AM/FM w/Premium GMC Infotainment System - Includes 13.4" diagonal multicolour touch-screen, Google built in apps such as navigation and voice assistance, multi-touch display, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones.$00 $

Seat Equipment
Rear Underseat Storage (LPO) - Dealer installed. Includes composite storage bin and lockable lid.$405405 $

Seat Type
Front Bucket Seats - 12-Way Power Driver Seat Adjuster w/Lumbar 12-Way Power Passenger Seat Adjuster w/Lumbar Includes massage. Driver Memory Recalls driver presets for power driver seat and outside mirrors.$00 $

Sun/Moon Roof
Power Sunroof$1,3251325 $

Suspension Type
Off-Road Suspension - Includes twin-tube shocks.$00 $

Tire Type
Tires: LT275/65R20 AT BW$00 $

Trailering Equipment
Gooseneck/5th Wheel Prep Package - Hitch platform to accept gooseneck or 5th wheel hitch. Includes hitch platform with tray to accept ball, stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).$630630 $

Transmissions
Transmission: Allison 10-Speed Automatic (MGM)$00 $

Wheel Type
Wheels: 20" Transit Aluminum - For LPO 20" wheels and tires.$00 $

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Warranty Information Standard
Basic distance: 60,000 km
Basic months: 36 months
Basic warranty: 36 months/60,000km
Corrosion perforation warranty: 60 months/ unlimited distance
Drivetrain distance: 100,000 km
Drivetrain months: 60 months
Powertrain warranty: 60 months/100,000km
Roadside assistance coverage: 60 months/100,000km
Roadside distance: 100,000 km
Roadside months: 60 months

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* Every reasonable effort is made to ensure the accuracy of the information listed above. Vehicle pricing, incentives, options (including standard equipment), and technical specifications listed is for the 2025 GMC Sierra 2500HD Denali 4x4 Crew Cab 6.75 ft. box may not match the exact vehicle displayed. Please confirm with a sales representative the accuracy of this information.

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