2026 GMC Sierra 2500 HD for Sale in La Grande, OR

Powerful Engine Options for Every Task

The 2026 GMC Sierra 2500 HD offers two impressive powertrains designed to tackle the toughest challenges. The standard 6.6-liter V8 gasoline engine produces 401 horsepower and 464 pound-feet of torque, featuring direct injection and variable valve timing for reliable performance. For those requiring maximum capability, the available 6.6-liter Duramax Turbo-Diesel V8 generates an impressive 470 horsepower and 975 pound-feet of torque, making it ideal for heavy hauling and extended towing applications. Both engines pair with a smooth-shifting 10-speed automatic transmission. Drivers in Pendleton, OR, appreciate the diesel option for its exceptional low-end torque when pulling heavy livestock trailers across challenging terrain.

Exceptional Towing and Payload Capability

The Sierra 2500 HD is built to handle substantial workloads with confidence. When properly equipped, this heavy-duty truck can achieve up to 22,390 pounds of available towing capacity, making it suitable for fifth-wheel campers, large equipment trailers, and commercial hauling applications. Residents of Hermiston, OR, find this capability invaluable for agricultural operations requiring the transport of heavy machinery. The available Gooseneck/5th Wheel Prep Package includes a hitch platform, stamped bed holes with removable caps, and a bed-mounted 7-pin trailer harness. Advanced trailering technology, such as Hitch Guidance with Hitch View, Trailer Side Blind Zone Alert, and the In-Vehicle Trailering App, helps make towing safer and more manageable.