Name: 2026 GMC Sierra 3500HD 4WD Crew Cab Long Box AT4
Brand: GMC
SKU: G0242
Price: 116267 CAD
Availability: InStock

Vehicle Details

Body Style

Truck

Engine

6.6L 8Cyl

Exterior Colour

White

Interior Colour

Black

Transmission

Automatic

Drivetrain

4×4

Doors

VIN

1GT4UVEY8TF135407

Stock #

G0242

Condition

New

Trim Details

4WD Crew Cab Long Box AT4

The 2026 GMC Sierra 3500HD AT4, dressed in a striking white exterior and equipped with a robust 4×4 drivetrain, promises exceptional handling across all terrains. This truck is powered by a mighty 6.6L 8-cylinder engine paired with an automatic transmission, ready to tackle any challenge with ease.

On the outside, this formidable truck features bold and distinctive styling, complemented by durable alloy wheels and practical running boards. Inside, the cabin offers a luxurious and rugged atmosphere, boasting premium black leather seats, heated and cooled for the ultimate comfort. The interior marries utility with sophistication, thanks to a spacious crew cab configuration and a long box providing ample cargo space.

The Sierra 3500HD AT4 is packed with advanced technology, including a backup camera, navigation system, and a smart device integration interface, all accessible via a clear and intuitive touchscreen display. Stay connected with the integrated Wi-Fi hotspot and enjoy your favorite tunes through the satellite radio. Safety is a priority, offering features like lane assist, adaptive cruise control, and parking sensors, ensuring peace of mind on every journey.

This truck caters to those who demand power, luxury, and cutting-edge technology, making it perfect for adventure-seekers and hardworking professionals alike. To learn more about what the 2026 GMC Sierra 3500HD AT4 can do for you, contact our dealership today for a personalized consultation.

Packages & Options

Standard Equipment

Technical Specifications

Installed Packages

At4 Preferred Equipment Group • 4SB

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, 12,250 Lbs. (5557 Kg) With Single Rear Wheels • JGT
Rear Axle, 3.42 Ratio • GU6
Wheels, 20" (50.8 Cm) High Gloss Black Aluminum Wheels, 8 Spokes • Q7N
Tires, Lt275/65R20 All-Terrain, Blackwall • QF9
Summit White • GAZ
Seats, Front Bucket With Centre Console • A50
Jet Black With Kalahari Accents, Perforated Front Leather Seating Surfaces • HVD
Audio System, 13.4" Diagonal Premium Gmc Infotainment System • IOK

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.
At4 Premium Plus Package • PDG

includes (PDO) AT4 Preferred Package, (CF5) power sunroof, (CWM) Technology Package and (VXW) Off-Road High Clearance step, LPO
Technology Package • CWM

includes (DRZ) Rear Camera Mirror and (UV6) Multicolour 15" Diagonal Head-Up Display
At4 Preferred Package • PDO

includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps
Engine Block Heater • K05
High Idle Switch • UF3
Alternator, 220 Amps • KW5
Exhaust Brake • K40
Sunroof, Power • CF5
Lpo, Off-Road High Clearance Step • VXW

(dealer-installed)
Winter Grille Cover • BHP
Lamps, Smoked Amber Roof Marker, (Led) • U01
Window, Power, Rear Sliding • A48

with rear defogger
Multicolour 15" Diagonal Head-Up Display • UV6
Universal Home Remote • UG1
Rear Camera Mirror • DRZ

inside rearview auto-dimming with full camera display
3 Years Siriusxm • R6P

No matches were found.

Options

Air Conditioning
Alloy Wheels
Backup Camera
Bluetooth Connection
Cooled Seats
Cruise Control
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
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-Terrain
Tires - Rear All-Terrain
Conventional Spare Tire
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Bumper, front, body-colour lower
Bumper, rear body-colour with bumper CornerSteps
CornerStep, rear bumper
Bed Step, Black integrated on forward portion of bed on driver and passenger side
Mouldings, beltline, Black
Wheelhouse liners, rear
Bed Liner
Cargo tie downs (12), fixed, rated at 500 lbs per corner
Grille, Gloss Black header and grille insert bars with Black chrome accents
Daytime Running Lights
LED Headlights
Automatic Highbeams
Fog Lamps
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse 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
Heated Mirrors
Integrated Turn Signal Mirrors
Power Folding Mirrors
Power Mirror(s)
Mirror caps, high gloss Black
Intermittent Wipers
Rain Sensing Wipers
Variable Speed Intermittent Wipers
Privacy Glass
Door handles, body-colour
Integrated Tailgate Step
Tailgate and bed rail protection caps, top
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light

Interior

Bucket Seats
Leather Seats
Driver Adjustable Lumbar
Power Driver Seat
Passenger Adjustable Lumbar
Power Passenger Seat
Pass-Through Rear Seat
Rear Bench 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
Heated Steering Wheel
Adjustable Steering Wheel
Steering Wheel Audio Controls
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
GMC Premium information Display- 13.4" diagonal Multicolour touch screen
Exterior Temperature Display located in radio display
Compass, located in instrument cluster
Tire Pressure Monitor
Window, power front, drivers express up/down
Power Windows
Power Door Locks
Remote Engine Start
Keyless Entry
Keyless Start
Adaptive Cruise Control
Cruise Control
Security System
Wireless Charging
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
USB ports, (2) charge-only, rear
Auxiliary Audio Input
MP3 Player
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
A/C
Climate Control
Multi-Zone A/C
Air vents, rear
Rear Defrost
Auto-Dimming Rearview Mirror
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, 11,700 lbs. (5307 kg) with single rear wheels (Included and only available with model TK30943 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
Keyless Start
Air filter, heavy-duty
Air filtration monitoring
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
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
Tow Hooks
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Skid Plates protect the oil pan, front axle and transfer case
Suspension, Off-Road includes twin-tube shocks
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
X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
Tow Hitch
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App

Processing-other

Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering

Safety

Front Collision Mitigation
Front Collision Warning
Stability Control
Traction Control
Hill Descent 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
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Trailer Camera Provisions and trailer viewing software
Cross-Traffic Alert
Blind Spot Monitor
Lane Departure Warning
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Safety Alert Seat
Rear Seat Reminder
Driver Restriction Features
Seat Belt Adjustable Guide Loops, front row only
Rear Seat Belt Indicator (Requires Crew Cab or Double Cab model.)
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)
Tire Pressure Monitor

No matches were found.

Summary

Vehicle Name

GMC Sierra 3500HD
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

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

Gross Axle Wt Rating - Front (lbs)

5600
Gross Axle Wt Rating - Rear (lbs)

7250
Gross Vehicle Weight Rating Cap (lbs)

12250
Gross Combined Wt Rating (lbs)

30000

Trailering

Dead Weight Hitch - Max Trailer Wt. (lbs)

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

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

20000
Wt Distributing Hitch - Max Tongue Wt. (lbs)

2000
Fifth Wheel Hitch - Max Trailer Wt. (lbs)

21200
Fifth Wheel Hitch - Max Tongue Wt. (lbs)

5300
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
Engine Oil Cooler

Yes

Electrical

Cold Cranking Amps @ 0° F (Primary)

720
Maximum Alternator Capacity (amps)

220

Frame

Frame Type

Hydroformed

Suspension

Suspension Type - Front

Short/Long Arm w/Torsion Bars
Suspension Type - Rear

3-Stage Multi-Leaf
Axle Type - Front

Independent
Axle Ratio (:1) - Front

3.42
Axle Ratio (:1) - Rear

3.42
Shock Absorber Diameter - Front (mm)

51
Shock Absorber Diameter - Rear (mm)

51
Stabilizer Bar Diameter - Front (in)

1.38

Tires

Front Tire Order Code

QF9
Rear Tire Order Code

QF9
Spare Tire Order Code

ZYG
Front Tire Size

LT275/65R20
Rear Tire Size

LT275/65R20
Spare Tire Size

LT275/70R18

Wheels

Front Wheel Size (in)

18 x 8
Rear Wheel Size (in)

18 x 8
Spare Wheel Size (in)

18 x 8
Front Wheel Material

Aluminum
Rear Wheel Material

Aluminum
Spare Wheel Material

Steel

Steering

Steering Type

Pwr Recirculating Ball
Steering Ratio (:1), At Lock

N/A
Turning Diameter - Curb to Curb (ft)

57.0
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)

172
Length, Overall (in)

266.77
Width, Max w/o mirrors (in)

81.85
Height, Overall (in)

80.81
Cab to Axle (in)

55.24
Ground Clearance, Front (in)

11.14
Ground Clearance, Rear (in)

11.14

Cargo area dimensions

Cargo Box Length @ Floor (in)

98.22
Cargo Box Width @ Floor (in)

71.4
Cargo Box Width @ Wheelhousings (in)

50.55
Cargo Box (Area) Height (in)

21
Cargo Volume (ft³)

83.5

No matches were found.

New 2026 GMC Sierra 3500HD AT4

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New 2026 GMC Sierra 3500HD AT4

Request More Information

2026 GMC Sierra 3500HD AT4 $116,267

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Book a Test Drive

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Get in touch