Drivetrain Automatic Transmissions and Components

DuraMax Tuner

DT550 2011 -2016 with billet converter CORE CHARGE OF $1500 APPLIES

$6,615.00

SKU: D06C DT550-LML-TQC

In Stock
In Stock
Ships by Jun 16
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The LML (2011-2016) DT550 - BUILT TRANSMISSION WITH TORQUE CONVERTER is designed for 2011-2016 Chevy Silverado or GMC Sierra Duramax Trucks. Great for daily driving, frequent towing, or increased reliability. Features smooth, positive shifts and easy converter lock-up. Includes new/upgraded clutches and steels, electronics, sensors, valve body, return springs, and torque converter. Upgrades include additional clutches, upgraded C3 and C4 return springs, upgraded Goerend billet triple-disc torque converter, and an upgraded transmission case. Ideal for those not planning injector/CP3 upgrades, considering a turbo upgrade, daily driving, light to medium towing, high mileage/worn-out transmissions, limp mode, or P0700 codes.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDuraMax Tuner
Part NumberD06C DT550-LML-TQC

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy