Gooseneck / 5th wheel prep package -- hitch platform to accept gooseneck or 5th wheel hitch.$630
Assist handle, side$75
3 years sirius xm$299
Total Cost:$1,244
Details
Exterior Color:Summit White
Interior Color:Obsidian Rush
Body Style:Crew Cab Pickup
Transmission:10-Speed Automatic
Stock:G262112
VIN:1GT4UZEY3TF397116
Mileage:10
Engine:Turbocharged Diesel V8 6.6L/
City MPG:
Highway MPG:
Options
Summit white
High idle switch
Assist handle, side
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).
3 YEARS SIRIUS XM
Rain Sensing Wipers
Leather Seats
Power Door Locks
Telematics
Driver Adjustable Lumbar
Rear Defrost
Power Driver Seat
Heated Rear Seat(s)
Front Collision Warning
Back-Up Camera
Heated Steering Wheel
Cooled Front Seat(s)
Lane Departure Warning
Seat-Massage
Pass-Through Rear Seat
Satellite Radio
Fog Lamps
Power Passenger Seat
Cruise Control
Passenger Air Bag Sensor
Bucket Seats
Floor Mats
Power Mirror(s)
Rear Parking Aid
AM/FM Stereo
Power Retractable Running Boards
Tow Hitch
Automatic Highbeams
Sliding Rear Window
Daytime Running Lights
Heated Front Seat(s)
MP3 Capability
Stability Control
Requires Subscription
Smart Device Integration
Security System
Front Collision Mitigation
Requires Subscription
ABS
Bluetooth Connection
4-Wheel Disc Brakes
Remote Engine Start
Rear Head Air Bag
Navigation System
Daytime Running Lights
Rear Bench Seat
Locking/Limited Slip Differential
Back-Up Camera
Requires Subscription
Power Windows
Cross-Traffic Alert
Heads-Up Display
Auxiliary Audio Input
Running Boards/Side Steps
Running Boards/Side Steps
Seat Memory
Power Steering
Heated Mirrors
Mirror Memory
Tires - Rear All-Season
Requires Subscription
Obsidian rush, full grain leather seat trim
Gooseneck / 5th wheel prep package -- hitch platform to accept gooseneck or 5th wheel hitch.
ASSIST HANDLE SIDE (bed mounted; fold out grab handle for extra support)
Climate Control
Adaptive Cruise Control
Integrated Turn Signal Mirrors
MP3 Capability
MP3 Capability
Front Collision Mitigation
Auxiliary Audio Input
Intermittent Wipers
Keyless Start
Passenger Adjustable Lumbar
Bed Liner
Power Door Locks
Lane Departure Warning
Conventional Spare Tire
Premium Sound System
Blind Spot Monitor
Tow Hooks
Front Collision Warning
Multi-Zone A/C
Integrated Tailgate Step
Universal Garage Door Opener
Power Folding Mirrors
Driver Air Bag
Premium Sound System
Four Wheel Drive
Tires - Front All-Season
Floor Mats
Front Head Air Bag
Back-Up Camera
Passenger Air Bag
Daytime Running Lights
Variable Speed Intermittent Wipers
Auto-Dimming Rearview Mirror
Tire Pressure Monitor
Bluetooth Connection
Front Collision Warning
Telematics
Automatic Highbeams
Sun/Moonroof
Bluetooth Connection
Steering Wheel Audio Controls
Generic Sun/Moonroof
Front Side Air Bag
Heated Front Seat(s)
Aerial View Display System
Keyless Entry
Keyless Start
Front Collision Mitigation
Traction Control
Auxiliary Audio Input
Rear Defrost
Adjustable Steering Wheel
Power Windows
Privacy Glass
WiFi Hotspot
Power Windows
Seat-Massage
Aluminum Wheels
Smart Device Integration
Leather Steering Wheel
Driver Restriction Features
Highlights
4 wheel Drive
4 wheel Drive
Anti Lock Braking System
Anti Lock Braking System
Sun / Moonroof
Sun / Moonroof
Bed Liner
Bed Liner
Heated Seats
Heated Seats
Steering Wheel Controls
Steering Wheel Controls
Remote Start
Remote Start
Cruise Control
Cruise Control
Universal Garage Door Opener
Universal Garage Door Opener
Backup Camera / Assist
Backup Camera / Assist
Cross-Traffic Alert
Cross-Traffic Alert
Blind Spot Monitor
Blind Spot Monitor
Multi-Zone A/C
Multi-Zone A/C
Keyless Entry
Keyless Entry
Navigation
Navigation
Power Seat(s)
Power Seat(s)
Premium Sound
Premium Sound
Satellite Radio
Satellite Radio
Rain Sensing Wipers
Rain Sensing Wipers
Bluetooth
Bluetooth
Back-Up Camera
Back-Up Camera
Keyless Start
Keyless Start
Cooled Seat(s)
Cooled Seat(s)
Power Folding Mirrors
Power Folding Mirrors
Lane Departure Warning
Lane Departure Warning
Wifi
Wifi
Adaptive Cruise
Adaptive Cruise
Smartphone Integration
Smartphone Integration
Android Auto
Android Auto
Apple Carplay
Apple Carplay
Overview
The 2026 GMC Sierra 2500HD AT4X is the heavy-duty truck for those who demand performance both on the job site and deep in the backcountry. Powered by the legendary Duramax 6.6L Turbo-Diesel V8, paired with a factory 1.5* off-road suspension lift and 35* M/T tires, this AT4X is engineered for capability that goes well beyond what a standard Sierra 2500HD offers. Add in a full suite of advanced trailering tech and premium interior refinements, and this truck checks every box. - ENGINE, DURAMAX 6.6L TURBO-DIESEL V8 B20-diesel compatible, delivering the towing muscle and torque serious haulers rely on - AT4X-Exclusive Off-Road Suspension Factory 1.5* lift with DSSV dampers front and rear, 35* LT305/70R18 M/T tires, and aluminum/steel skid plates for genuine trail capability - GMC MultiPro Tailgate Six functional load and access configurations that make truck work significantly more efficient - ProGrade Trailering System Includes integrated trailer brake controller, Hitch Guidance with Hitch View, In-Vehicle Trailering App, and Trailer Tire Pressure Monitor provisions - Multicolour 15* Head-Up Display & 13.4* Infotainment Touchscreen Premium driver-focused tech with a reconfigurable 12.3* digital instrument cluster - Power Sunroof, Heated Steering Wheel & Heated Rear Seats Comfort features that make this a legitimate daily driver regardless of the season - Hill Descent Control & Driver-Selectable E-Locking Rear Differential Tools that inspire confidence when the terrain gets technical - Bed-Mounted 120V Power Outlet, Spray-On Bedliner & Animated LED Signature Taillamps Practical details that reflect the AT4X*s premium, work-ready character Ready to experience the Sierra 2500HD AT4X for yourself? Visit us at Birchwood Chevrolet Buick GMC to book a test drive, ask our team any questions, or get started on your purchase online. We*re here to make the process straightforward and worth your time whether you come in person or connect with us through birchwoodchevrolet.ca. See three brands under one roof at Birchwood Chevrolet Buick GMC the only place in Winnipeg where you can compare GMC, Chevrolet, and Buick all in one visit. Save yourself some time, see a great selection, and learn everything you need to know. Your Experience is Everything at Birchwood Chevrolet Buick GMC. Click, call (204) 837-5811, or visit Birchwood Chevrolet Buick GMC at the Birchwood Auto Park, 3965 Portage Avenue West at the Perimeter. Dealer Permit #4240. Dealer permit #4240 #214
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
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)
Premium Floor Liners with removable carpet insert, rear
Rear Seat Reminder
Seat adjuster, driver 16-way power including lumbar and massage
Seat trim, Full Grain Leather
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
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
LPO, MultiPro Tailgate Audio System by Kicker
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Premium Floor Liners with removable carpet insert, front
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
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. (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, 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
Mechanical
Air filter, heavy-duty
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
Brake lining wear indicator
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Cooling, external engine oil cooler
Four wheel drive
GVWR, 11,025 lbs. (5001 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.)
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, Red (Deleted with (ULV) AT4X AEV Edition.)
Skid Plates, Transfer case, steel
Suspension, Off-Road Includes, 1.5" suspension lift: front suspension lift composed of: Control Arms, Ball Joints, Knuckles, DSSV Dampers, rear suspension lift composed of spacer block and DSSV Dampers and Half shafts w/ revised joints, 3-stage Leaf springs from 3500
Transfer case, two-speed active, electronic Autotrac with push button control
Air filtration monitoring
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
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Hill Descent Control
Pickup bed includes bed assist step
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Skid Plates, front aluminum
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
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. Term begins on vehicle delivery date. 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. Services, connectivity, and capabilities have additional terms and limitations and are subject to change, and will vary by model, vehicle configuration, software version, conditions, and geographical and technical restrictions. Compatible smartphone required for mobile app commands. Not all vehicles may transmit all crash data; OnStar links to emergency services; Voice and Maps apps are subject to change at any time and may be provided by third parties. Non-refundable and no cash value. See onstar.ca/en/info for terms and 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, Black includes LED lighting (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 (Bumper color will be High Gloss Black.)
CornerStep, rear bumper (Not available with (ULV) AT4X AEV Edition.)
Fog lamps, LED
Grille (Gloss Black header and grille insert bars with Dark Nickel inserts.)
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Lamps, Smoked Amber roof marker, (LED)
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, LT305/70R18-126/123R, 35" M/T
Wheelhouse liners, rear
Wipers, front rain-sensing
Bed Step, Black integrated on forward portion of bed on driver and passenger side
Bumper, front, body-colour lower (Bumper color will be High Gloss Black.)
Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
Door handles, body-colour (With (ULV) AT4X AEV Edition door handles will be Gloss black.)
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, LT305/70R18-126/123R, 35" M/T
Wheel, Spare 18" (50.8 cm)
Wheels, 18" (45.7 cm) machined aluminum wheel with High Gloss black accents
Package
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
New 2026 GMC Sierra 2500HD4WDAT4X
AT4X| Factory Order - Arriving Soon |Crew Cab Standard Box 4-Wheel Drive AT4XCrew Cab Pickup4WD10-Speed AutomaticTurbocharged Diesel V8 6.6L/
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