GMC Sierra 2500Hd 2025

2025 GMC Sierra 2500HD AT4X

Exceptional heavy-duty diesel performance, premium luxury, and serious off-road capability.

Engine & Power

• 6.6L Duramax Turbo-Diesel V8 (6610 cc) – 470 hp / 975 lb-ft torque
• B20 biodiesel compatible

Transmission

• Allison 10-speed automatic (smooth, powerful towing)

Drive

• 4x4 (AWD) with Multimatic DSSV dampers, electronic locking differentials, and front/rear off‑road suspension
• Thunderstorm Grey exterior with Obsidian Rush full‑grain leather interior
• Gooseneck/5th‑Wheel Prep Package (factory mounting platform)
• Exhaust Brake, High Idle Switch, 18‑inch machined aluminum wheels

Interior & Comfort

• Obsidian Rush full‑grain leather (front bucket, heated/ventilated front seats, heated rear outboard seats, heated steering wheel)
• Dual‑zone automatic climate control, premium centre console, spacious Crew Cab seating

Off‑Road Features

• Underbody protection, aggressive all‑terrain tires, Multimatic DSSV dampers for terrain control
• Factory suspension lift and aggressive stance
• Thunderstorm Grey exterior with premium wheels

Technology

• 13.4‑inch GMC Premium Infotainment touchscreen
• 12.3‑inch digital Driver Information Centre
• Google built‑in (Apple CarPlay, Android Auto)
• Bluetooth, wireless smartphone charging, remote start, trailer‑focused camera

Why This Truck?

• Powerful Duramax diesel with ample torque for towing & hauling
• Allison 10‑speed transmission for smooth highway & heavy‑load performance
• Premium AT4X off‑road package (dampers, locking diffs, lift, tires)
• Obsidian Rush interior for luxury and style
• Dealer‑certified, AMVIC licensed with CARFAX Canada report available

Perfect for Alberta buyers who need a capable, comfortable, and luxurious heavy‑duty pickup.