2026 GMC Sierra 2500 HD AT4X

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Automatic

Four-Wheel Drive

Available at

$126,412 * on cash purchase

Was at $140,286

Employee pricing $13,874

Cash purchase selling price ($126,411.50) includes: Freight and PDI ($2,700.00), Dealer Fees ($699.00), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation. Plus (GST/QST) & Licensing.

(GST/QST), licensing, insurance & registration not included.

Cash purchase offer is based on the 2026 GMC Sierra 2500 HD CC AT4X 4WD (TK20743 4SG GBA) model, with 6.6L 8 cyl. engine and 10 speed Automatic transmission. Cash purchase selling price is $126,411.50 (plus GST/QST). Cash purchase selling price ($126,411.50) includes rebates: Employee pricing ($13,874.00). Cash purchase selling price ($126,411.50) includes: Freight and PDI ($2,700.00), Dealer Fees ($699.00), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation. Plus (GST/QST) & Licensing. Finance offer is based on the 2026 GMC Sierra 2500 HD CC AT4X 4WD (TK20743 4SG GBA) model, with 6.6L 8 cyl. engine and 10 speed Automatic transmission. Finance selling price is $126,411.50 (plus GST/QST). Finance payments include rebates: Employee pricing ($13,874.00). Finance payments include: Freight and PDI ($2,700.00), Dealer Fees ($699.00), PPSA ($114.28), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation. Finance offer is based on a 84 months term and 4.99% interest rate. 364 weekly payments of $411.95 ($473.64 GST/QST included) with $0.00 cash down and $0.00 net trade in. Cash down payments are due upon vehicle delivery. Trade-in tax credits require proof of ownership. Finance total obligation is $172,404.96 (GST/QST included). Finance total cost of credit is $26,949.05. Annual Percentage Rate (APR) is 5.01%. Limited time purchase financing offer on approved credit. Some customers will not qualify. Rates and requirements may vary depending on credit worthiness. Payments and conditions may vary for a commercial use. (GST/QST) are calculated on the total amount prior to deduction of the down payment. Lease offer is based on the 2026 GMC Sierra 2500 HD CC AT4X 4WD (TK20743 4SG GBA) model, with 6.6L 8 cyl. engine and 10 speed Automatic transmission. Lease selling price is $126,411.50 (plus GST/QST). Lease payments include rebates: Employee pricing ($13,874.00). Lease payments include: Freight and PDI ($2,700.00), Dealer Fees ($699.00), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation. Lease payments exclude: PPSA ($51.21). Lease offer is based on a 48 months term and 8.5% interest rate. 208 weekly payments of $474.14 ($545.15 GST/QST included) with $0.00 cash down and $0.00 net trade in. $0.00 down payment and tax on down payment, $0.00 net trade-in and $545.15 first payment are due at lease inception. Total amount due at lease inception is $596.36 ($0.00 down payment, First payment ($545.15), PPSA ($51.21) and GST/QST $0.00). Trade-in tax credits require proof of ownership. Lease offer is based on a 20000 kilometer allowance per year. $0.16 fee per excess kilometer will apply. Estimated vehicle residual value is $60,012.52. An option to purchase at lease end (Buy Back Value) of $60,012.52 may be available. A security deposit might be required. Limited time leasing offer on approved credit. Some customers will not qualify. Rates and requirements may vary depending on credit worthiness. Payments and conditions may vary for a commercial use. Taxes on initial cash down and after tax rebates (including government rebate) are excluded and must be paid upon delivery. Lease total obligation is $113,442.41 (GST/QST included). Lease total cost of credit is $32,222.14. Annual Percentage Rate (APR) is 8.51%. The illustrated vehicle is based on the 2026 GMC Sierra 2500 HD CC AT4X 4WD (TK20743 4SG) model, with 6.6L 8 cyl. engine and 10 speed Automatic transmission. The illustrated vehicle's cash purchase selling price is $126,411.50. Levy and other environmental or related levies, other taxes (including, where applicable, GST and PST or HST), additional options, license, insurance and registration are extra. While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any errors or omissions contained on these pages. Please verify all information and pricing with a sales representative or ask online. The dealership reserves the right to make changes at any time, without notice, to the prices, rates, models, materials, equipment, specifications, and availability, or to discontinue models or equipment. Vehicle trade-ins are subject to dealer's approval. Trade-in tax credits require proof of ownership.

Save up to

$13,874

Lease from as low as

For 48 months at 8.5%
with $ $0 cashdown + tax.

$474 /week

Lease payments include: Freight and PDI ($2,700.00), Dealer Fees ($699.00), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation. Lease payments exclude: PPSA ($51.21).

(GST/QST), licensing & registration not included.

† The effective interest rate is 8.51%.

Finance from as low as

For 84 months at 4.99%
with $ $0 cashdown + tax.

$412 /week

Finance payments include: Freight and PDI ($2,700.00), Dealer Fees ($699.00), PPSA ($114.28), Air conditioning excise tax ($100.00), Tire Duty ($22.50) including installation.

(GST/QST), licensing & registration not included.

† The effective interest rate is 5.01%.

i *Fine Print

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Evaluate Your Trade-In

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2026 GMC Sierra 2500 HD AT4X at Garage Montplaisir Ltée

City

L/100KM

Highway

L/100KM

2026 GMC Sierra 2500HD AT4X – 6.6L Duramax V8 Turbo-Diesel

Discover the 2026 GMC Sierra 2500HD AT4X, a premium heavy-duty pickup engineered to combine serious power, extreme off-road capability, luxury, and advanced technology. The Sierra 2500HD AT4X is designed for drivers who need a truck that can handle demanding work while providing a refined and comfortable driving experience.

Under the hood, the 6.6L Duramax V8 Turbo-Diesel engine delivers exceptional power and massive torque, making it ideal for heavy-duty towing, hauling equipment, and demanding workloads. Paired with an Allison® 10-speed automatic transmission, it provides smooth shifting, responsive performance, and dependable power when you need it most.

The AT4X takes off-road capability to the next level. With four-wheel drive, specialized off-road suspension, underbody protection, and advanced driving technologies, the Sierra 2500HD AT4X is built to tackle challenging terrain with confidence.

The exclusive AT4X exterior features a commanding design with a distinctive grille, dark accents, rugged wheels, and unique styling details. Its appearance perfectly reflects its combination of premium refinement and serious off-road capability.

Inside, the Sierra 2500HD AT4X offers a premium cabin with upscale materials, comfortable seating, and advanced technology. The infotainment system with Apple CarPlay® and Android Auto™ keeps you connected, while advanced driver-assistance technologies provide added comfort and confidence.

Whether you're working, towing heavy loads, or exploring challenging off-road terrain, the 2026 GMC Sierra 2500HD AT4X with the 6.6L Duramax delivers an exceptional combination of power, capability, luxury, and refinement.

Vehicle Highlights

2026 GMC Sierra 2500HD AT4X
6.6L Duramax V8 Turbo-Diesel engine
Allison® 10-speed automatic transmission
Four-wheel drive
AT4X off-road capability
Exceptional towing and hauling capability
Massive torque for demanding workloads
Off-road-tuned suspension
Exclusive AT4X rugged styling
Premium and comfortable interior
Advanced safety and connectivity technologies

Details

Trim:

AT4X

Transmission:

Automatic

Mileage:

Bodystyle:

Pickup - Crew Cab

Doors:

Passengers:

Cylinders:

Duramax 6.6L Turbo-Diesel V8 B20-Diesel compatible - 8 cyl.

Inventory #:

26493

VIN #:

1GT4UZEY2TF235851

Fuel:

Diesel

Ext. Color:

Black

Drivetrain:

Four-Wheel Drive

Options

Door locks power
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 power folding/extending (extends 3.31" [84.25mm])
Tailgate gate function manual with EZ Lift includes power lock and release includes hitch area light
Audio System 13.4 " diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance includes colour touchscreen 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
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
Wi-Fi Hotspot capable
Steering wheel heated
Adaptive Cruise Control
Trailering Package includes trailer hitch 7-pin and 4- pin connectors and (CTT) Hitch Guidance
Seat adjuster driver 16-way power including lumbar and massage
Air conditioning dual-zone automatic climate control
Seat adjuster passenger 16-way power including lumbar and massage
Lamps cargo area cab mounted integrated with centre high mount stop lamp with switch in bank on left side of steering wheel
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Bluetooth for phone connectivity to vehicle infotainment system
Tire Pressure Monitoring System auto learn includes Tire Fill Alert (does not apply to spare tire)
Driver memory recalls driver "presets" for power driver seat and outside mirrors
GMC Premium information Display- 13.4" diagonal Multicolour touch screen
Headlamps Animated LED projectors LED turn signals and Daytime Running Lamps
Bumper rear body-colour with bumper CornerSteps
Tire spare LT305/70R18-126/123R 35" M/T
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Frame fully-boxed hydroformed front section and a fully-boxed stamped rear section
Brake lining wear indicator
Trailering Information Label provides max trailer ratings for tongue weight conventional gooseneck and 5th wheel trailering
Wheel Spare 18" (50.8 cm)
Driver Information Centre enhanced 12.3" diagonal reconfigurable multicolour digital display
Brakes 4-wheel antilock 4-wheel disc with DURALIFE rotors
Rear Seat Belt Indicator
Steering wheel leather-wrapped
Cooling external engine oil cooler
Rear Seat Reminder
Seats front bucket with centre console
Door handles body-colour
Steering Digital Variable Steering Assist this system automatically adjusts steering based on speed road conditions and other inputs to reduce driver effort and fatigue
Windows power rear express down
Mouldings beltline Black
Skid Plates Transfer case steel
Tires LT305/70R18-126/123R 35" M/T
Cooling auxiliary external transmission oil cooler
Recovery hooks Red
Tailgate GMC MultiPro Tailgate with six functional load/access features
Bed Step Black integrated on forward portion of bed on driver and passenger side
Trailer brake controller integrated
Skid Plates front aluminum
Wheels 18" (45.7 cm) machined aluminum wheel with High Gloss black accents
Pickup bed includes bed assist step
Differential driver-selectable full-locking rear e-locking
Seat Belt Adjustable Guide Loops front row only
Tailgate and bed rail protection caps top
Daytime Running Lamps LED signature lighting
Floor covering colour-keyed carpeting
Suspension Off-Road Includes 40 mm front suspension kit composed of: Control Arms Ball Joints Knuckles DSSV Dampers 15 mm Rear Suspension Lift composed of spacer block and DSSV Dampers and Half shafts w/ revised joints 3-stage Leaf springs from 3500
Assist steps power retractable Black includes LED lighting
Bumper front body-colour lower
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)
Air vents rear
Mirror caps high gloss Black
Taillamps Animated LED Signature Tail Stop turn and Reverse lamps
Cargo tie downs (12) fixed rated at 500 lbs (226.8 kg) per corner
Exterior Temperature Display located in radio display
Fog lamps LED
LED Signature DRL's
MultiPro Tailgate Audio System by Kicker
Teen Driver
Windows power front drivers express up/down
Assist handles front A-pillar mounted for driver and passenger rear B-pillar mounted
CornerStep rear bumper
Air filtration monitoring
Air filter heavy-duty
Compass located in instrument cluster
Power door locks
Heated mirrors
Power mirrors
Power tailgate
Navigation system
Android Auto
AppleCar Play
Hands free bluetooth
LCD display
Front sensors
Side-impact air bags
Front driver & passenger airbags
Wifi thetering
Heated steering
Adaptive cruise control
Trailer Hitch
Power driver seat
Automatic Climate Control
Air Conditioning
Power front passenger seat
Steering - Mounted controls
Tire pressure monitoring
Memory seats - Front
LED headlights

Warranty Description

Basic Warranty (Bumper-to-Bumper): 3 years or 60,000 km.
Powertrain Warranty: 5 years or 100,000 km (or 160,000 km where applicable).
Corrosion (Perforation) Warranty: 6 years or 160,000 km.
Roadside Assistance: Included for the duration of the powertrain warranty period.
Restraint Systems Warranty: 6 years or 120,000 km.

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(GST/QST), licensing, insurance & registration not included.