* GOOSENECK / 5TH WHEEL PREP PACKAGE * * AT4 PREMIUM PLUS PACKAGE * * 6.6L V8 ENGINE * Discover the power and versatility of the 2026 GMC Sierra 3500HD AT4 in the heart of Fort St. John. This Crew Cab Pickup is engineered for those who demand the best in performance and capability. The robust 6.6L V8 engine delivers an impressive 401 horsepower paired seamlessly with a 10-speed automatic transmission, ensuring smooth and powerful driving experiences whether you're towing or cruising. The AT4 Premium Plus Package elevates your journey with premium features like a power sunroof, an advanced technology package, and off-road high clearance steps for enhanced accessibility. Additionally, the Gooseneck / 5th Wheel Prep Package provides the ultimate towing setup, making it perfect for those who require serious hauling capabilities. Step inside and enjoy luxury touches such as leather seats, a heated steering wheel, and a premium sound system. With smart device integration and a navigation system, staying connected and on course is effortless. Safety is paramount with features like adaptive cruise control, lane departure warning, blind spot monitoring, and multiple collision mitigation systems, offering peace of mind on every journey.

• Summit white
• GVWR 11 550 LBS. (5239 KG) WITH SINGLE REAR WHEELS (STD)
• HEAVY DUTY FRONT SPRING/CAMPER PACKAGE Note: If ordered for Camper usage recommend ordering (UY2) Trailering wiring provisions
• 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).
• UPFITTER SWITCH KIT (5) Provides 3-30 amp and 2-20 amp configurable circuits to facilitate installation of aftermarket electrical accessories. Kit with all required parts will be shipped loose with the truck for installation by the dealer or upfitter at customer expense. Installation instructions and technical assistance available at www.gmupfitter.com.
• LPO OFF-ROAD HIGH CLEARANCE STEP (dealer-installed)
• TRANSMISSION 10-SPEED AUTOMATIC (STD)
• ALTERNATOR 220 AMPS
• ENGINE 6.6L V8 WITH DIRECT INJECTION AND VARIABLE VALVE TIMING GASOLINE (401 hp [299 kW] @ 5200 rpm 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD)
• Tow Hooks
• Front Collision Mitigation
• Requires Subscription
• Aerial View Display System
• MP3 Capability
• AM/FM Stereo
• Conventional Spare Tire
• Fog Lamps
• Driver Restriction Features
• Variable Speed Intermittent Wipers
• Stability Control
• Rear Head Air Bag
• Tire Pressure Monitor
• Driver Air Bag
• Heated Steering Wheel
• Bed Liner
• Smart Device Integration
• Front Collision Warning
• Tow Hitch
• LED Headlights
• Power Steering
• Aluminum Wheels
• Steering Wheel Audio Controls
• Daytime Running Lights
• Cruise Control
• Power Folding Mirrors
• Requires Subscription
• Front Head Air Bag
• Lane Departure Warning
• Leather Seats
• Adaptive Cruise Control
• Tires - Front All-Terrain
• Front Collision Warning
• Integrated Turn Signal Mirrors
• Power Mirror(s)
• Bucket Seats
• Integrated Tailgate Step
• Auxiliary Audio Input
• Front Collision Mitigation
• MP3 Capability
• Locking/Limited Slip Differential
• Tires - Rear All-Terrain
• Climate Control
• Auxiliary Audio Input
• Driver Adjustable Lumbar
• Telematics
• Intermittent Wipers
• Power Driver Seat
• Daytime Running Lights
• Adjustable Steering Wheel
• Bluetooth Connection
• Rear Defrost
• Power Door Locks
• Front Side Air Bag

• Jet black with kalahari accents, perforated front leather seating surfaces
• LICENSE PLATE KIT FRONT
• HIGH IDLE SWITCH
• ENGINE BLOCK HEATER
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) Off-Road High Clearance step LPO
• BATTERY AUXILIARY 700 COLD-CRANKING AMPS/70 AMP-HR
• REAR AXLE 3.73 RATIO
• Heated Mirrors
• Premium Sound System
• Passenger Air Bag Sensor
• Power Passenger Seat
• Remote Engine Start
• Power Windows
• Power Door Locks
• Blind Spot Monitor
• Rain Sensing Wipers
• Bluetooth Connection
• Rear Bench Seat
• Passenger Adjustable Lumbar
• Heated Rear Seat(s)
• Smart Device Integration
• Back-Up Camera
• Satellite Radio
• Security System
• Seat Memory
• Requires Subscription
• Privacy Glass
• Floor Mats
• Cross-Traffic Alert
• Requires Subscription
• 4-Wheel Disc Brakes
• Passenger Air Bag
• Auto-Dimming Rearview Mirror
• Multi-Zone A/C
• Keyless Start
• Cooled Front Seat(s)
• Bluetooth Connection
• ABS
• Daytime Running Lights
• Floor Mats
• Lane Departure Warning
• Auxiliary Audio Input
• Pass-Through Rear Seat
• Power Windows
• Keyless Start
• WiFi Hotspot
• Tire Pressure Monitor
• Traction Control
• Four Wheel Drive
• Automatic Highbeams
• MP3 Capability
• Mirror Memory
• Rear Parking Aid
• Heated Front Seat(s)
• Navigation System
• Automatic Highbeams
• Back-Up Camera
• Keyless Entry
• Telematics
• Front Collision Warning
• Heated Front Seat(s)
• Front Collision Mitigation

• 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 Sound System, premium 7-speaker system with Richbass woofer
• 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
• 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.)
• Mirror, inside rearview auto-dimming
• Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
• Premium Floor Liners with removable carpet insert, rear
• Seat adjuster, driver 10-way power including lumbar
• Seat trim, Perforated Front Leather seating surfaces
• 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 (first row) located on console
• Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
• Window, power front, passenger express up/down
• Wireless Charging

• 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
• GMC Premium information Display- 13.4" diagonal Multicolour touch screen
• Keyless Open and Start includes remote keyless entry
• Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
• Premium Floor Liners with removable carpet insert, front
• Remote vehicle starter system
• Seat adjuster, passenger 10-way power including lumbar
• 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 underseat 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. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. 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, wrapped
• USB ports, (2) charge-only, rear
• USB Ports, 2, Charge/Data ports located inside centre console
• Window, power front, drivers express up/down
• Windows, power rear, express down
• Wireless phone projection for Apple CarPlay and Android Auto

• Air filter, heavy-duty
• Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
• Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
• Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
• Cooling, auxiliary external transmission oil cooler
• Four wheel drive
• GVWR, 11,550 lbs. (5239 kg) with single rear wheels (Included and only available with TK30743 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
• Push Button Start
• Recovery hooks, Red
• 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
• Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
• Cooling, external engine oil cooler
• Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
• Pickup bed includes bed assist step
• Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas 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

• 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.)
• Hill Descent Control
• 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 (Requires Crew Cab or Double Cab model.)
• 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

• 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 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
• Rear Seat Reminder
• 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

• 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 per corner
• Door handles, body-colour
• 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
• Mirror caps, high gloss Black
• Mouldings, beltline, Black
• 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 (Requires single rear wheels.)
• Wheels, 20" (50.8 cm) High Gloss black aluminum wheels, 8 spokes

• 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, Gloss Black header and grille insert bars with Black chrome accents
• IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
• 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, perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm])
• Single Rear Wheels
• 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
• Wipers, front rain-sensing

• 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