Name: 2026 GMC Sierra 2500HD Crew Cab Standard Box 4-Wheel Drive AT4X
Brand: GMC
SKU: 6026-40198
Price: 126633 CAD
Availability: InStock

Vehicle Details

Body Style

Truck

Engine

6.6L 8Cyl

Exterior Colour

Black

Interior Colour

Black

Transmission

Automatic

Drivetrain

4×4

Doors

VIN

1GT4UZEY7TF140198

Stock #

6026-40198

Condition

New

Trim Details

Crew Cab Standard Box 4-Wheel Drive AT4X

The Ultimate Off-Road Heavy-Duty | The All-New 2026 GMC Sierra 2500HD AT4X with Duramax® Diesel

(Stock #: [Insert Stock #] | VIN: [Insert VIN])

Conquer the most demanding terrain with uncompromising authority. The all-new 2026 GMC Sierra 2500HD AT4X is the pinnacle of off-road engineering, masterfully blending the immense torque of the available Duramax® Turbo-Diesel with the most advanced off-road system ever fitted to a GMC HD truck. This is not merely a capable vehicle; it is a purpose-built overlanding and worksite champion, designed to go where other heavy-duty trucks cannot.

The AT4X package builds upon the premium, rugged foundation of the AT4 trim, adding next-level hardware to dominate any landscape. With its luxurious, technology-rich interior, the Sierra 2500HD AT4X ensures that your command post is as comfortable in the wilderness as it is on the highway.

Key Features of the 2026 Sierra 2500HD AT4X:

Ultimate Powertrain for Adventure: The formidable 6.6L Duramax® Turbo-Diesel V8 engine provides massive torque for towing and crawling, paired with the legendary Allison® 10-speed automatic transmission and a sophisticated 4WD system with an electronic transfer case.
AT4X Off-Road Dominance: Features Multimatic® DSSV™ Dampers for unparalleled control over rough terrain, a 2-inch factory lift, underbody skid plates, locking front and rear electronic differentials, and aggressive all-terrain tires.
Rugged Premium Interior: Heated and ventilated perforated leather-appointed seats with AT4X branding, a heated steering wheel, durable yet upscale materials, and integrated auxiliary switches for off-road gear.
Advanced Off-Road Technology: Underbody Camera System to see obstacles beneath the truck, GMC's MultiPro™ Tailgate, a high-resolution 15-inch diagonal head-up display, and the latest GMC Infotainment System with Google Built-In.
Unmistakable AT4X Styling: Distinctive black chrome grille, 18-inch alloy wheels with all-terrain tires, unique badging, and available factory-installed off-road lighting.

Vehicle Highlights:

Model Year: 2026
Drivetrain: 4WD
Engine: 6.6L Duramax® Turbo-Diesel
Trim: AT4X
Status: IN STOCK

This is the ultimate tool for the modern pioneer. Contact us today for exclusive information on the 2026 Sierra 2500HD AT4X and be the first to explore its limits.

VSA 10374

Packages & Options

Standard Equipment

Technical Specifications

Installed Packages

At4X Preferred Equipment Group • 4SG

includes standard equipment
Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible • L5P

(470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
Transmission, 10-Speed Automatic • MGM
Gvwr, 11,350 Lbs. (5148 Kg) • JGL
Rear Axle, 3.42 Ratio • GU6
Wheels, 18" (45.7 Cm) Machined Aluminum Wheel • RCS

with High Gloss black accents
Onyx Black • GBA
Seats, Front Bucket • A50

with centre console
Obsidian Rush, Full Grain Leather Seat Trim • H9J
Audio System, 13.4" Diagonal Premium Gmc Infotainment System With Google Built In Apps Such As Navigation And Voice Assistance • IOK

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
Lpo, Black Badging Package • RFE

(dealer-installed), includes (SFZ) Black GMC emblems, LPO, and (RIK) Black Sierra Nameplates, LPO.
Engine Block Heater • K05
Alternator, 220 Amps • KW5
High Idle Switch • UF3
Gooseneck / 5Th Wheel Prep Package -- Hitch Platform To Accept Gooseneck Or 5Th Wheel Hitch. • Z6A

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).
Exhaust Brake • K40
Winter Grille Cover • BHP
Lpo, Black Gmc Emblems • SFZ

(dealer-installed)
Lpo, Black Sierra Nameplates • RIK

(dealer-installed)
License Plate Kit, Front, Incandescent Lighting • VK3

(will be shipped to orders with ship-to provinces that require front license plate)
3 Years Sirius Xm • R6P

No matches were found.

Options

Air Conditioning
Alloy Wheels
Backup Camera
Bluetooth Connection
Cooled Seats
Cruise Control
Heads Up Display
Heated Seats
Keyless Entry
Lane Assist
Leather Seats
Navigation System
Parking Sensors
Power Seats
Power Windows
Remote Start
Running Boards
Satellite Radio
Smart Device Integration
Sunroof / Moonroof
Wi-Fi Hotspot

No matches were found.

Entertainment

AM/FM Stereo
Auxiliary Audio Input
Bluetooth Connection
MP3 Player
Navigation System
Smart Device Integration
Requires Subscription
Satellite Radio
Premium Sound System
WiFi Hotspot

Exterior

Aluminum Wheels
Tires - Front All-Season
Tires - Rear All-Season
Conventional Spare Tire
Wheel, Spare 18" (50.8 cm)
Generic Sun/Moonroof
Sun/Moonroof
Bumper, front, body-colour lower (Bumper color will be High Gloss Black.)
Bumper, rear body-colour with bumper CornerSteps (Bumper color will be High Gloss Black.)
Power Retractable Running Boards
Running Boards/Side Steps
Bed Liner
Bed Step, Black integrated on forward portion of bed on driver and passenger side
CornerStep, rear bumper (Not available with (ULV) AT4X AEV Edition.)
Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
Wheelhouse liners, rear
Mouldings, beltline, Black
Grille (Gloss Black header and grille insert bars with Dark Nickel inserts.)
Daytime Running Lights
Automatic Highbeams
Fog 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
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
Lamps, Smoked Amber roof marker, (LED)
Heated Mirrors
Integrated Turn Signal Mirrors
Power Folding Mirrors
Power Mirror(s)
Privacy Glass
Intermittent Wipers
Rain Sensing Wipers
Variable Speed Intermittent Wipers
Door handles, body-colour (With (ULV) AT4X AEV Edition door handles will be Gloss black.)
Integrated Tailgate Step
Tailgate and bed rail protection caps, top

Interior

Bucket Seats
Leather Seats
Pass-Through Rear Seat
Rear Bench Seat
Driver Adjustable Lumbar
Power Driver Seat
Seat-Massage
Passenger Adjustable Lumbar
Power Passenger Seat
Heated Front Seat(s)
Cooled Front Seat(s)
Heated Rear Seat(s)
Mirror Memory
Seat Memory
Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
Floor covering, colour-keyed carpeting
Floor Mats
Leather Steering Wheel
Heated Steering Wheel
Steering Wheel Audio Controls
Adjustable Steering Wheel
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
Heads-Up Display
Rear Seat Reminder
GMC Premium information Display- 13.4" diagonal Multicolour touch screen
Exterior Temperature Display, located in radio display
Compass, located in instrument cluster
Power Windows
Rear Defrost
Sliding Rear Window
Power Door Locks
Keyless Entry
Keyless Start
Remote Engine Start
Adaptive Cruise Control
Cruise Control
Universal Garage Door Opener
Wireless Charging
Security System
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Auxiliary Audio Input
MP3 Player
USB ports, (2) charge-only, rear
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
A/C
Climate Control
Multi-Zone A/C
Auto-Dimming Rearview Mirror
Back-Up Camera
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted

Mechanical

8 Cylinder Engine
Gasoline Fuel
10-Speed A/T
A/T
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Running Boards/Side Steps
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.)
Keyless Start
Hill Descent Control
Transfer case, two-speed active, electronic Autotrac with push button control
Locking/Limited Slip Differential
Four Wheel Drive
Cooling, external engine oil cooler
Cooling, auxiliary external transmission oil cooler
Air filter, heavy-duty
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.)
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
Trailer brake controller, integrated
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.)
Tow Hooks
Skid Plates, front aluminum
Skid Plates, Transfer case, steel
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
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
Power Steering
4-Wheel Disc Brakes
ABS
Brake lining wear indicator
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)

Package

Automatic Highbeams
Front Collision Mitigation
Front Collision Warning
Lane Departure Warning
Tow Hitch
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App

Safety

Front Collision Mitigation
Front Collision Warning
Stability Control
Traction Control
Daytime Running Lights
Driver Air Bag
Front Head Air Bag
Front Side Air Bag
Passenger Air Bag
Passenger Air Bag Sensor
Rear Head Air Bag
Requires Subscription
Telematics
Rear Parking Aid
Aerial View Display System
Back-Up Camera
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
Trailer Camera Provisions and trailer viewing software
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Lane Departure Warning
Cross-Traffic Alert
Blind Spot Monitor
Seat Belt Adjustable Guide Loops, front row only
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.)
Safety Alert Seat
Driver Restriction Features
Tire Pressure Monitor
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
Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering

No matches were found.

Summary

Vehicle Name

GMC Sierra 2500HD
Body Style

Crew Cab Pickup
Body Code

E63

Transmission

Drivetrain

Four Wheel Drive
Trans Order Code

MGM
Trans Type

10
Trans Description Cont.

Automatic
First Gear Ratio (:1)

4.54
Second Gear Ratio (:1)

2.87
Third Gear Ratio (:1)

2.06
Fourth Gear Ratio (:1)

1.72
Fifth Gear Ratio (:1)

1.48
Sixth Gear Ratio (:1)

1.26
Seventh Gear Ratio (:1)

1.00
Eighth Gear Ratio (:1)

0.85
Ninth Gear Ratio (:1)

0.69
Tenth Gear Ratio (:1)

0.63
Reverse Ratio (:1)

4.54
Clutch Size (in)

N/A

Interior dimensions

Passenger Capacity

5
Front Head Room (in)

43.03
Front Leg Room (in)

44.53
Front Shoulder Room (in)

66.02
Front Hip Room (in)

61.18
Second Head Room (in)

40.12
Second Leg Room (in)

43.4
Second Shoulder Room (in)

65.3
Second Hip Room (in)

60.24

Weight information

Curb Weight - Front (lbs)

4023
Curb Weight - Rear (lbs)

2822
Gross Vehicle Weight Rating Cap (lbs)

11350
Gross Combined Wt Rating (lbs)

27500

Trailering

Dead Weight Hitch - Max Trailer Wt. (lbs)

5000
Dead Weight Hitch - Max Tongue Wt. (lbs)

500
Wt Distributing Hitch - Max Trailer Wt. (lbs)

18500
Wt Distributing Hitch - Max Tongue Wt. (lbs)

1850
Fifth Wheel Hitch - Max Trailer Wt. (lbs)

17300
Fifth Wheel Hitch - Max Tongue Wt. (lbs)

4325
Maximum Trailering Capacity (lbs)

20000

Engine

Engine Order Code

L5P
Engine Type

Turbocharged Diesel V8
Displacement

6.6L
Fuel System

Direct Injection
SAE Net Horsepower @ RPM

470 @ 2800
SAE Net Torque @ RPM

975 @ 1600

Electrical

Cold Cranking Amps @ 0° F (Primary)

720
Maximum Alternator Capacity (amps)

220
Maximum Alternator Watts

N/A

Suspension

Suspension Type - Front

Short/Long Arm
Suspension Type - Rear

Multi-Leaf Springs
Axle Ratio (:1) - Front

3.42
Axle Ratio (:1) - Rear

3.42
Shock Absorber Diameter - Front (mm)

2.17
Shock Absorber Diameter - Rear (mm)

2.17
Stabilizer Bar Diameter - Front (in)

1.38

Tires

Front Tire Order Code

QMG
Rear Tire Order Code

QMG
Spare Tire Order Code

QNZ
Front Tire Size

LT305/70R18-126/123R
Rear Tire Size

LT305/70R18-126/123R
Spare Tire Size

LT305/70R18-126/123R
Revolutions/Mile @ 45 mph - Front (Rev/Mile)

N/A
Revolutions/Mile @ 45 mph - Rear (Rev/Mile)

N/A
Revolutions/Mile @ 45 mph - Spare (Rev/Mile)

N/A

Wheels

Front Wheel Size (in)

18
Rear Wheel Size (in)

18
Spare Wheel Size (in)

18
Front Wheel Material

Aluminum
Rear Wheel Material

Aluminum
Spare Wheel Material

Steel

Steering

Steering Type

Pwr Recirculating Ball
Turning Diameter - Curb to Curb (ft)

51.8
Turning Diameter - Wall to Wall (ft)

N/A

Brakes

Brake Type

Pwr
Brake ABS System

4-Wheel
Disc - Front

Yes
Disc - Rear

Yes
Front Brake Rotor Diam x Thickness (in)

14 x 1.6
Rear Brake Rotor Diam x Thickness (in)

14.1 x 1.3

Fuel tank

Fuel Tank Capacity, Approx (L)

136

Exterior dimensions

Wheelbase (in)

159
Length, Overall (in)

250.75
Width, Max w/o mirrors (in)

81.85
Height, Overall (in)

82.68
Cab to Axle (in)

42.36
Ground Clearance, Front (in)

11.61
Ground Clearance, Rear (in)

11.61

Cargo area dimensions

Cargo Box Length @ Floor (in)

82.2
Cargo Box Width @ Floor (in)

71.4
Cargo Box Width @ Wheelhousings (in)

51.85
Cargo Box (Area) Height (in)

21
Cargo Volume (ft³)

69.5

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New 2026 GMC Sierra 2500HD AT4X

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2026 GMC Sierra 2500HD AT4X $126,633

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