St-Gelais Chevrolet Buick GMC
2040 boul de Comporté, La Malbaie, QC, G5A 3C4
418 665-7511

2026 GMC Sierra 2500 AT4X 
in La Malbaie 

 Automatic
Ext: Black Int: Black
Reduced Price
2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-1
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-1
    GMC Sierra-2500 2026 - Photo #1
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-2
    GMC Sierra-2500 2026 - Photo #2
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-3
    GMC Sierra-2500 2026 - Photo #3
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-4
    GMC Sierra-2500 2026 - Photo #4
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-5
    GMC Sierra-2500 2026 - Photo #5
  • 2026 GMC Sierra-2500 new, Ext:Black, int:Black, At4x, 134524. St-Gelais Chevrolet Buick GMC. C1976-neuf-6
    GMC Sierra-2500 2026 - Photo #6
The amount shown reflects an estimate of the amount that you can expect to pay in Canadian dollars. Taxes are excluded (unless selected otherwise). Photos for illustration purposes only. While we strive to ensure that the information on this website is accurate, we recommend contacting us directly to verify details and obtain additional information about the vehicle, including confirmation of prices, colors, trims, options, and other specifications.Right to Repair Notice - In accordance with Québec's Consumer Protection Act, the availability of replacement parts, repair services, or the information necessary for the maintenance or repair of the vehicle or any of its components may vary depending on the manufacturer and model. Please contact the dealership for full details regarding parts and service availability.

2026 GMC Sierra 2500 - Specifications 

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Highway
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  • Model: Sierra 2500
  • Trim Level: AT4X
  • Category: Trucks
  • Exterior Colour: Black
  • Interior Colour: Black
  • Passengers: 5
  • Doors: 4
  • Stock #: C1976-neuf
  • VIN: 1GT4UZEY7TF341700
  • See options
  • Drive train: Four-wheel drive
  • Transmission: Automatic
  • Fuel: Diesel
  • Engine: 6.6L/-TBD-
  • Cylinders: 8
  • Price: 134,524

Key features of the 2026 GMC Sierra 2500 

AT4X Off-Road Trim

AT4X trim adds a rugged, adventure-focused identity to this heavy-duty crew cab pickup.

6.6 L Engine

Equipped with a 6.6 L engine for heavy-duty capability and confident performance.

AWD Confidence

AWD traction supports confident driving across changing road and surface conditions.

Crew Cab Space

Crew Cab configuration offers roomy passenger space and practical everyday versatility.

The key features listed may depend on the trim, options, or equipment package.

2026 GMC Sierra 2500 - Description 

GMC Sierra 2500 AT4X
Discover heavy-duty confidence with this brand new 2026 GMC Sierra 2500 At4x, now at St-Gelais Chevrolet Buick GMC in La Malbaie. Finished in Black with a full-grain leather-trimmed Obsidian interior, this four-door truck pairs a 6.6 L diesel engine with automatic transmission and 4-wheel drive.

Built for hard work and rough roads, the 2026 GMC Sierra 2500 At4x brings serious capability with a premium feel. This truck is made for drivers who need strong diesel power, sure-footed traction, and a cabin that supports long days on the road or at the job site.

FEATURES OF THE Sierra 2500 At4x
»» Off-road focused heavy-duty truck design
»» Standard four-wheel drive for added traction
»» 6.6 L diesel power for demanding tasks
»» Premium full-grain leather-trimmed interior finish

ADVANCED SAFETY FEATURES
»» Heavy-duty frame supports confident truck control
»» Four-wheel drive helps on loose surfaces
»» Large truck stance improves road visibility
»» Durable build adds peace of mind

PERFORMANCE AND EFFICIENCY
»» 6.6 L diesel engine delivers strong torque
»» Automatic transmission supports smooth power delivery
»» Four-wheel drive boosts traction in tough conditions
»» Engine block heater helps cold-weather starts

COMFORT AND CONVENIENCE
»» Four-door cabin allows easy passenger access
»» Full-grain leather seating adds upscale comfort
»» Spacious interior suits work and travel
»» Automatic transmission helps reduce driver effort

TECHNOLOGY AND CONNECTIVITY
»» Clear driver controls support daily usability
»» Automatic transmission simplifies operation in traffic
»» Modern truck layout feels practical and refined
»» Cabin design supports easy everyday driving

TRUCK FEATURES
»» Heavy-duty platform built for serious work
»» Diesel power supports towing and hauling
»» Four-wheel drive aids off-road capability
»» Strong chassis suits demanding conditions

CARGO SPACE
»» Pickup bed supports gear and materials
»» Cabin offers room for personal items
»» Four-door layout improves daily practicality
»» Heavy-duty design suits active lifestyles

WHAT OTHER OWNERS LIKE
»» Strong diesel torque for heavy jobs
»» Confident four-wheel drive in poor weather
»» Comfortable cabin for long workdays
»» Heavy-duty capability with premium truck feel

WARRANTY

This 2026 GMC Sierra 2500 At4x's VIN is: 1GT4UZEY7TF341700.

Original Manufacturer's Warranty: 60,000 KM

2026 GMC Sierra 2500 - Options 

2026 GMC Sierra 2500 - Technical Specifications 

  • Fuel:
  • Fuel efficiency:  
    • City: Liters / 100 Km
    • Highway: Liters / 100 Km
  • Horse Power: Hp at Rpm
  • Torque: Lbs at Rpm
  • Trunk space: Liters
  • Vehicle weight: Kg
  • Length: mm
  • Width: mm
  • Height: mm

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While we strive to ensure that the information on this website is accurate, we recommend contacting us directly to verify details and obtain additional information about the vehicle, including confirmation of prices, colors, trims, options, and other specifications.
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