The Ultimate Truck for Overlanding?
2026 GMC Sierra 2500 AT4 review and honest thoughts! I take a Walk around this 70k truck and break down is this truck really worth your money in 2026. With loads of new tech and features it is a beast of a truck.
The GMC Sierra 2500 HD AT4 package turns the heavy-duty truck into a capable off-road performer with features like a lifted suspension, skid plates, all-terrain tires, unique styling with red tow hooks, and advanced tech like multiple camera views, offering a blend of High end rugged capability for light to medium off-roading without sacrificing towing power or comfort, sitting above standard trims but below the extreme AT4X.
Key Features of the AT4 Package:
Off-Road Hardware:
Factory-installed 2-inch suspension lift.
Rancho monotube shocks.
Underbody skid plates for protection.
Two-speed transfer case for low-range gearing.
Locking differentials (available or standard depending on model year/trim).
Hill Descent Control and Traction Select System.
Wheels & Tires: 20-inch wheels with all-terrain tires.
Exterior: Body-color bumpers, LED cargo bed lighting, unique grille with red GMC logo and red tow hooks.
Interior & Tech: Premium leather seating, heated/ventilated seats, large touchscreens, available wireless charging, Bose audio, and numerous camera views (including for trailering).
Powertrain: Often paired with the powerful Duramax diesel engine and 10-speed transmission for strong towing performance.
Difference between AT4 and AT4X?
AT4: Ideal for adventurous daily driving and moderate off-roading.
AT4X: The next level up for extreme off-roading, adding features like Multimatic DSSV dampers and even more advanced locking differentials.
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