2011-2016 Silverado & Sierra 2500 & 3500 Duramax LML Complete Transmissions

The Duramax LML under the hood of your HD Silverado or Sierra is more than capable of throwing down some serious horsepower and torque, even with a few basic mods, but you'll need a transmission that can actually handle it. Tier One's built transmissions for 2011-2016 Silverado & Sierra 2500 & 3500 Duramax LML trucks can hold a tremendous amount of horsepower and torque, allowing you to use powerful tuning, big turbos, oversized injectors, and whatever else you may need to take your Duramax-powered Silverado or Sierra to the next level of performance. Our built Duramax LML transmissions are also perfect for heavy towing and handle the load of big trailers, toy haulers, 5th wheels, boats, and all of your gear without letting you down. We have everything from budget-friendly Duramax LML towing transmissions to all-out Duramax competition transmissions that will let you crush your opponents at the track. Make sure to also check out our 2011-2016 Duramax LML Transmission Kits or our 2011-2016 Duramax LML Transmission Coolers!