Details

Exterior Color: Sterling Metallic
Interior Color: Alpine Umber
Body Style: Pickup
Transmission: 10-Speed Automatic

Stock: D5755
VIN: 1GT4UXEY4SF182721
Mileage: 15
Engine: Turbocharged Diesel V8 6.6L/
City MPG:
Highway MPG:

Highlights

Back-Up Camera
Back-Up Camera
Heated Seats
Heated Seats
Cooled Seat(s)
Cooled Seat(s)
Remote Start
Remote Start
Keyless Start
Keyless Start
4 wheel Drive
4 wheel Drive
Wifi
Wifi
Blind Spot Monitor
Blind Spot Monitor
Cross-Traffic Alert
Cross-Traffic Alert
Navigation
Navigation
Cruise Control
Cruise Control
Bluetooth
Bluetooth
Power Seat(s)
Power Seat(s)
Power Folding Mirrors
Power Folding Mirrors
Multi-Zone A/C
Multi-Zone A/C
Keyless Entry
Keyless Entry
Universal Garage Door Opener
Universal Garage Door Opener
Adaptive Cruise
Adaptive Cruise
Bed Liner
Bed Liner
Premium Sound
Premium Sound
Satellite Radio
Satellite Radio
Smartphone Integration
Smartphone Integration
Steering Wheel Controls
Steering Wheel Controls
Anti Lock Braking System
Anti Lock Braking System
Rain Sensing Wipers
Rain Sensing Wipers
Backup Camera / Assist
Backup Camera / Assist
Sun / Moonroof
Sun / Moonroof
Lane Departure Warning
Lane Departure Warning

Overview

Conquer the Road with Power and Precision: The 2025 GMC Sierra 2500HD Denali Ultimate in Sterling Metallic is Your Ultimate Driving Companion

The 2025 GMC Sierra 2500HD Denali Ultimate is engineered for those who demand more from their truck. With its robust Duramax 6.6L Turbo-Diesel V8 engine delivering an impressive 470 horsepower and 975 lb-ft of torque this beast is built to tackle the toughest terrains with ease. The Allison 10-Speed Automatic Transmission ensures seamless power delivery making every drive smooth and efficient.

Designed for the discerning driver the Sierra 2500HD boasts a sophisticated Sterling Metallic exterior that exudes confidence and style. Inside the Alpine Umber full-grain leather seats offer unparalleled comfort elevating your driving experience to new heights. The Crew Cab configuration provides ample space for passengers and gear making it perfect for both work and leisure.

Equipped with the Gooseneck/5th Wheel Prep Package this truck is ready for heavy-duty towing ensuring you can haul with confidence. The bed-mounted 7-pin trailer harness and removable caps make it versatile for any adventure. Whether you're navigating city streets or rugged trails the 2025 GMC Sierra 2500HD Denali Ultimate is your ideal partner in performance and luxury.

Dean Cooley GM has been serving the Parkland area since 1995 and we are proud to have contributed to the area's automotive needs for almost three decades. Specializing in Chevrolet Buick and GMC vehicles along with certified pre-owned options we take pride in matching you with the perfect vehicle to suit your needs. Our in-house financial experts are dedicated to simplifying the financing and leasing process offering personalized solutions. At the heart of our operation lies our service department complete with a cutting-edge collision and glass center. Here we service all makes and models with meticulous precision and care. We also have a comprehensive parts department stocked with essential parts accessories and tires – all conveniently located under one roof. Visit us today at 1600 Main Street South in Dauphin and experience a new standard in the automotive industry. Dealer permit #1693.

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Options

Sterling metallic
ALPINE UMBER FULL GRAIN LEATHER SEAT TRIM
HIGH IDLE SWITCH
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).
ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (STD)
REAR AXLE 3.42 RATIO
Tow Hooks
Keyless Start
Front Collision Mitigation
Locking/Limited Slip Differential
Power Windows
ABS
Aluminum Wheels
Front Collision Warning
Power Steering
Four Wheel Drive
Generic Sun/Moonroof
Tires - Rear All-Terrain
Blind Spot Monitor
Power Folding Mirrors
Lane Departure Warning
Rear Parking Aid
Cross-Traffic Alert
Power Door Locks
Front Collision Warning
Heated Mirrors
Back-Up Camera
Keyless Entry
Requires Subscription
Heated Rear Seat(s)
Heated Front Seat(s)
MP3 Capability
Navigation System
Security System
Integrated Tailgate Step
Premium Sound System
MP3 Capability
Driver Adjustable Lumbar
Front Head Air Bag
Heated Front Seat(s)
Requires Subscription
Multi-Zone A/C
Back-Up Camera
Power Retractable Running Boards
Aerial View Display System
Power Windows
Auto-Dimming Rearview Mirror
Stability Control
MP3 Capability
Automatic Highbeams
Sliding Rear Window
Bluetooth Connection
Auxiliary Audio Input
Daytime Running Lights
Back-Up Camera
Front Collision Warning
Premium Sound System
Leather Seats
Passenger Air Bag Sensor
Front Collision Mitigation
Tire Pressure Monitor
Telematics
Floor Mats
Power Passenger Seat
Driver Restriction Features
Integrated Turn Signal Mirrors
Adjustable Steering Wheel
Universal Garage Door Opener
Bluetooth Connection

Alpine umber, full grain leather seat trim
GVWR 11 350 LBS. (5148 KG) (STD)
TRANSMISSION ALLISON 10-SPEED AUTOMATIC (STD)
DENALI ULTIMATE PREFERRED EQUIPMENT GROUP includes standard equipment
STERLING METALLIC
LICENSE PLATE KIT FRONT INCANDESCENT LIGHTING (will be shipped to orders with ship-to provinces that require front license plate)
Automatic Highbeams
Back-Up Camera
Sun/Moonroof
Tires - Front All-Terrain
4-Wheel Disc Brakes
Lane Departure Warning
Running Boards/Side Steps
Conventional Spare Tire
Tow Hitch
Heads-Up Display
Turbocharged
Power Door Locks
Privacy Glass
Seat-Massage
Leather Steering Wheel
Seat-Massage
Rear Defrost
Steering Wheel Audio Controls
Pass-Through Rear Seat
Smart Device Integration
Heads-Up Display
Power Driver Seat
Mirror Memory
Auxiliary Audio Input
Daytime Running Lights
Passenger Air Bag
Bucket Seats
Traction Control
Heated Steering Wheel
Variable Speed Intermittent Wipers
Telematics
Adaptive Cruise Control
Driver Air Bag
Power Windows
Rain Sensing Wipers
Front Collision Mitigation
Climate Control
Seat Memory
Power Mirror(s)
Auxiliary Audio Input
WiFi Hotspot
Bed Liner
Daytime Running Lights
Intermittent Wipers
Passenger Adjustable Lumbar
Floor Mats
Rear Head Air Bag
Cruise Control
Remote Engine Start
Rear Defrost
Bluetooth Connection
Requires Subscription
Keyless Start
Front Side Air Bag
Rear Bench Seat
Satellite Radio
Fog Lamps
Running Boards/Side Steps
AM/FM Stereo
Cooled Front Seat(s)
Requires Subscription
Smart Device Integration

Interior

Adaptive Cruise Control
Air vents, rear
Audio System, 13.4" diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance includes colour touch-screen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones
Bose Premium Series with 12-speaker system with Centerpoint Richbass woofer and AudioPilot
Compass, located in instrument cluster
Door locks, power
Driver memory recalls driver "presets" for power driver seat and outside mirrors
Floor covering, colour-keyed carpeting
Floor mats, carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
Keyless Open and Start includes remote keyless entry
Multicolour 15" Diagonal Head-Up Display
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Rear seat reminder
Seat adjuster, driver 16-way power including lumbar and massage
Seat, Up-level Rear with Storage Package 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, centre fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
Seats, front bucket with centre console
Seats, ventilated driver and front passenger
SiriusXM with 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.)
Steering wheel audio controls
Steering wheel, leather-wrapped
Universal Home Remote
USB Ports, 2 (first row) located on console
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.ca or dealer for details.)
Window, power, rear sliding with rear defogger
Windows, power rear, express down
Wireless Phone Projection for Apple CarPlay and Android Auto

Air conditioning, dual-zone automatic climate control
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
Bluetooth for phone connectivity to vehicle infotainment system
Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
Defogger, rear-window electric
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
Exterior Temperature Display, located in radio display
Floor mats, carpeted front (Includes Premium floor mats with corner applique.)
GMC Premium information Display- 13.4" diagonal Multicolour touch screen
LPO, MultiPro Tailgate Audio System by Kicker
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Rear Camera Mirror inside rearview auto-dimming with full camera display
Remote vehicle starter system
Seat adjuster, passenger 16-way power including lumbar and massage
Seating, heated driver and front outboard passenger
Seats, heated second row outboard seats
SiriusXM Trial Subscription
Steering column, manual Tilt-Wheel and telescoping
Steering wheel, heated
Theft-deterrent system, unauthorized entry
USB ports, (2) charge-only, rear
USB Ports, 2, Charge/Data ports located inside centre console
Window, power front, passenger express up/down
Windows, power front, drivers express up/down
Wireless charging

Mechanical

Air filter, heavy-duty
Alternator, 220 amps
Battery, heavy-duty dual 730 cold-cranking amps/70 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Cooling, auxiliary external transmission oil cooler
Engine block heater
Four wheel drive
GVWR, 11,350 lbs. (5148 kg) (Requires TK20743 Crew Cab model, (L5P) Duramax 6.6L Turbo-Diesel V8 engine, with 20" or 22" wheels and tires. Not available with (NHT) Max Trailering Package.)
In-vehicle Trailering App, System 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 monitor sensors are installed.)
Push Button Start
Recovery hooks, front, Chrome (plant installed.)
Steering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
Trailer brake controller, integrated

Air filtration monitoring
Auto-locking rear differential
Brake lining wear indicator
Capped Fuel Fill
Cooling, external engine oil cooler
Exhaust brake
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Hill Descent Control
Pickup bed includes bed assist step
Rear axle, 3.42 ratio (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)
Skid Plates protect the oil pan, front axle and transfer case
Suspension, Off-Road includes twin-tube shocks
Transfer case, two-speed active, electronic Autotrac with push button control

Safety

Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag
Bed View Camera, camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions
Daytime Running Lamps, LED signature lighting
Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
OnStar Basics (OnStar Fleet Basics for Fleet) Drive more confidently with up to 8 years of core OnStar services including mobile app commands, connectivity for select apps that provide in-vehicle voice assistance and navigation with real-time traffic, and Automatic Crash Response. (Requires (UE1) OnStar. OnStar Basics includes access to remote commands through your vehicle's mobile app (compatible smartphone required); Automatic Crash Response (not all vehicles may transmit all crash data; OnStar links to emergency services); and wireless connectivity for select apps that provide in-vehicle voice assistance and navigation with real-time traffic (Voice & Maps apps are subject to change at any time and may be provided by third parties). Term begins from date of vehicle delivery. Paid subscription required after expiry. Services are dependent on compatible wireless networks provided by third-party wireless service providers, working vehicle electrical systems, GPS signal and other factors outside GM control. Changes in technology and wireless networks may limit or prevent the operation of certain services. For customers who also separately receive or purchase a Premium Plan or Vehicle Data Plan to use Wi-Fi Hotspot and In-Vehicle Apps, the data provided as part of that plan will also be used by any Voice & Maps apps which already had data connectivity under this Basics plan; if any applicable data caps are reached, Voice & Maps apps will continue to function for the duration of this Basics plan but additional vehicle data plan(s) must be purchased to use Wi-Fi Hotspot and In-Vehicle Apps. Services, connectivity, and capabilities have additional terms and limitations and are subject to change, and will vary by model, vehicle configuration, conditions, and geographical and technical restrictions. Non-refundable and no cash value. See onstar.ca for details.)
Rear Cross Traffic Alert
Safety Alert Seat
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
Trailer Side Blind Zone Alert
Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering

Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
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 (Included and only available with (PDI) Sierra HD Pro Safety.)
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Front and Rear Park Assist, Ultrasonic
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.
Hitch Guidance with hitch view with Image adjustment, Pan/Zoom/Tilt
LED Signature DRL's
OnStar Services capable (See onstar.ca for details and limitations. Services vary by model. Service plan required.)
Rear Seat Belt Indicator
Seat Belt Adjustable Guide Loops, front row only
Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behaviour. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
Trailer Camera Provisions and trailer viewing software
Trailer Tire Pressure Monitor Sensors includes set of 4 sensors. Sensor functionality requires (UET) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories

Exterior

Assist steps, power-retractable, with LED perimeter lighting and bright accent (Not available with any other assist steps.)
Bedliner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel)
Bumper, rear body-colour with bumper CornerSteps
CornerStep, rear bumper
Fog lamps, LED
Grille (Signature Denali Ultimate grille in Vadar chrome with High Gloss Black surround.)
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Lamps, Smoked Amber roof marker, (LED)
Mirror caps, chrome
Mouldings, beltline, chrome
Tailgate and bed rail protection caps, top
Tailgate, GMC MultiPro Tailgate with six functional load/access features NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Tires, LT275/65R20 all-terrain, blackwall
Wheels, 20" (50.8 cm) Ultra-bright machined aluminum wheels with gloss black inserts with Black painted pockets
Wipers, front rain-sensing

Bed Step, Black integrated on forward portion of bed on driver and passenger side
Bumper, front, body-colour lower
Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
Door handles, chrome
Glass, deep-tinted
Headlamps, Animated LED projectors LED turn signals and Daytime Running Lamps
Lamps, cargo area cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheel
LED Cargo Area Lighting located in cargo bed activated with switch on centre switch bank or key fob
Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lighting
Sunroof, power
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
Tire, spare LT275/70R18 all-terrain, blackwall
Wheelhouse liners, rear
Winter Grille Cover

Package

X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks

ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App