Drivetrain Automatic Transmissions and Components

DuraMax Tuner

LLY (2004.5-2005) 5 SPEED DT750 BUILT TRANSMISSION W O TORQUE CONVERTER CORE CHARGE OF $1500 APPLIES

$5,535.00

SKU: D06C dt750-LLY-5

In Stock
In Stock
Ships by Jun 20
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The LLY (2004.5-2005) DT750 Built Transmission with Torque Converter is designed for 2004.5 and 2005 Chevy Silverado or GMC Sierra Duramax Trucks. It's ideal for daily driving, heavy towing, or high-performance applications. It provides smooth, positive shifts without harshness. The DT750 Built Transmission includes all new upgraded clutches, steels, electronics, sensors, valve body, and return springs. It is ready for installation. Optional upgrades include a C-3 Oiler and Deep Pan.

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 dt750-LLY-5

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