EXECUTIVE 2026 GMC Sierra 3500HD AT4

13.4 GMC Infotainment Screen | AT4 Premium Plus Package | Power Sunroof | 15 Head-Up Display | Gooseneck/5th Wheel Prep | Rear Camera Mirror | Power Retractable Assist Steps | GMC MultiPro Tailgate The 2026 GMC Sierra 3500HD Crew Cab AT4 4WD seamlessly unifies premium off-road engineering with top-tier heavy-duty power, creating an imposing presence with its striking Volcanic Red Tintcoat exterior and specialized Jet Black leather interior featuring distinctive Kalahari accents. Driven by the legendary Duramax 6.6L V8 Turbo Diesel engine paired with an advanced 10-speed automatic transmission, this premium pickup is engineered to handle massive payloads and demanding trailering tasks. Perfectly optimized for rugged backcountry worksites and harsh Canadian climate conditions, it features a 3.42 rear axle ratio, an authoritative 5,488 kg (12,100 lb) GVWR, a 2-speed active electronic Autotrac transfer case, an automatic locking rear differential, and digital variable steering. Ultimate towing and jobsite readiness are standard, utilizing an integrated trailer brake controller, a factory-installed Gooseneck/5th Wheel Prep Package, and a ProGrade trailering setup featuring Hitch Guidance with Hitch View, an in-vehicle trailering app, a Bed View Camera, and a specialized hitch area light. The aggressive AT4 exterior layout is outfitted with premium upgrades from the AT4 Premium Plus Package, including a power sunroof, LED roof marker lamps, and power-retractable assist steps with integrated LED lighting. These features complement standard rugged equipment like an EZ-Lift power lock and release tailgate, animated LED projector headlamps, front LED fog lamps, rain-sensing wipers, rear wheelhouse liners, a durable factory spray-on bed liner, power-folding/extending heated trailering mirrors, and the versatile six-position GMC MultiPro Tailgate. The interior serves as a premium, highly functional command center loaded with modern digital connections and refined driver amenities. The front row provides 10-way power-adjustable, heated, and ventilated front bucket seats with dual-preset driver memory, while the second-row outboard passengers benefit from heated seating. Executive cabin conveniences run deep, highlighted by premium floor liners, dual-zone automatic climate control, a power-sliding rear window, a Universal Home Remote, a wireless smartphone charging pad, and 120V AC power outlets located in both the instrument panel and the cargo bed. The cutting-edge digital cockpit is anchored by a massive 13.4-inch diagonal colour GMC Premium Infotainment touchscreen system with Google Built-In navigation, wireless Apple CarPlay, wireless Android Auto, and a studio-quality Bose premium speaker system. This advanced setup is paired with a 12.3-inch reconfigurable digital Driver Information Centre, a multi-colour 15-inch diagonal Head-Up Display, and a high-definition Rear Camera Mirror. Absolute peace of mind on and off the road is delivered by the Sierra HD Pro Safety suite, highlighting Adaptive Cruise Control, HD Surround Vision, Front and Rear Park Assist, Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, and the tactile Driver Safety Alert Seat. AMVIC LICENSED DEALER

• Volcanic red tintcoat
• ASSIST STEPS POWER-RETRACTABLE BLACK includes LED lighting
• TRANSMISSION 10-SPEED AUTOMATIC
• TIRES LT275/65R20 E 126/123 BF GOODRICH OFF-ROAD T/A KO3
• AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) Off-Road High Clearance step LPO
• GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
• Lane Departure Warning
• Front Collision Warning
• Tow Hitch
• Keyless Start
• Four Wheel Drive
• Power Steering
• 4-Wheel Disc Brakes
• Tires - Front All-Terrain
• Conventional Spare Tire
• Daytime Running Lights
• Automatic Highbeams
• Heated Mirrors
• Integrated Turn Signal Mirrors
• Intermittent Wipers
• Rain Sensing Wipers
• Integrated Tailgate Step
• Navigation System
• Bluetooth Connection
• Smart Device Integration
• Requires Subscription
• Requires Subscription
• Bluetooth Connection
• Smart Device Integration
• Bucket Seats
• Power Driver Seat
• Power Passenger Seat
• Pass-Through Rear Seat
• Heated Front Seat(s)
• Cooled Front Seat(s)
• Mirror Memory
• Floor Mats
• Heated Steering Wheel
• Steering Wheel Audio Controls
• Power Windows
• Power Door Locks
• Keyless Entry
• Keyless Start
• Adaptive Cruise Control
• MP3 Capability
• MP3 Capability
• Climate Control
• Rear Defrost
• Front Collision Mitigation
• Traction Control
• Daytime Running Lights
• Driver Air Bag
• Front Side Air Bag
• Rear Head Air Bag
• Telematics
• Rear Parking Aid
• Aerial View Display System
• Cross-Traffic Alert
• Lane Departure Warning
• Front Collision Mitigation
• Tire Pressure Monitor
• Navigation from Telematics

• Jet black with kalahari accents, perforated front leather seating surfaces
• 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) (Includes (K05) engine block heater.)
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• REAR AXLE 3.42 RATIO
• VOLCANIC RED TINTCOAT
• Front Collision Mitigation
• Automatic Highbeams
• Running Boards/Side Steps
• Locking/Limited Slip Differential
• Tow Hooks
• ABS
• Aluminum Wheels
• Tires - Rear All-Terrain
• Bed Liner
• LED Headlights
• Fog Lamps
• Power Mirror(s)
• Power Folding Mirrors
• Variable Speed Intermittent Wipers
• Privacy Glass
• AM/FM Stereo
• MP3 Capability
• Auxiliary Audio Input
• Satellite Radio
• Satellite Radio
• Premium Sound System
• Bluetooth Connection
• WiFi Hotspot
• Leather Seats
• Driver Adjustable Lumbar
• Passenger Adjustable Lumbar
• Rear Bench Seat
• Heated Front Seat(s)
• Heated Rear Seat(s)
• Seat Memory
• Floor Mats
• Adjustable Steering Wheel
• Tire Pressure Monitor
• Power Windows
• Remote Engine Start
• Power Door Locks
• Cruise Control
• Security System
• Auxiliary Audio Input
• Auxiliary Audio Input
• Multi-Zone A/C
• Auto-Dimming Rearview Mirror
• Front Collision Warning
• Stability Control
• Daytime Running Lights
• Passenger Air Bag
• Front Head Air Bag
• Passenger Air Bag Sensor
• Requires Subscription
• Back-Up Camera
• Back-Up Camera
• Blind Spot Monitor
• Front Collision Warning
• Driver Restriction Features
• Telematics
• Requires Subscription

• 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 color 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, color-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, 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, center fold out armrest with 2 cupholders, full cab width underseat storage, (includes child seat top tether anchor)
• Seats, front bucket with center 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. Trial subscription is subject to the SiriusXM Customer Agreement and privacy policy, visit siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)
• Steering wheel audio controls
• Steering wheel, wrapped
• USB ports, (2) charge-only, rear
• USB Ports, 2, Charge/Data ports located inside center console
• Window, power front, drivers express up/down
• 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
• Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
• Defogger, rear-window electric
• Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
• Exterior Temperature Display located in radio display
• GMC Premium information Display- 13.4" diagonal Multicolor 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
• Seating, heated driver and front outboard passenger
• Seats, heated second row outboard seats
• SiriusXM
• 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 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
• 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

• 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.)
• 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
• Transmission, 10-Speed automatic

• 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 (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
• 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
• Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
• OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)
• 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

• 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 center stack display. Includes front camera washer.
• Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
• Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
• LED Signature DRL's
• OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
• 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 behavior. 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-color lower
• Cargo tie downs (12), fixed, rated at 500 lbs per corner
• Door handles, body-color
• Glass, deep-tinted
• 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 center 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

• Bedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Available with Ship Thru code (SQE), (TCE) or (TCH), not available with any other Ship Thru code.)
• Bumper, rear body-color with bumper CornerSteps
• CornerStep, rear bumper
• Fog lamps, LED
• Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
• Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
• Mirror caps, high gloss Black
• Moldings, 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.)
• 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