Drivetrain› Automatic Transmissions and Components

DuraMax Tuner

Duramax Tuner LMM (2007.5-2010) DT750 BUILT TRANSMISSION W/O TORQUE CONVERTER DT750-LMM

$5,535.00

SKU: D06C DT750-LMM

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Duramax Tuner Built DT750 Transmission & Converter Package replaces the underperforming transmission in your Chevy Silverado/GMC Sierra 2500HD/3500HD 6.6L LMM Duramax. This built transmission includes upgraded clutches, steels, electronics, sensors, valve body, return springs, and a billet torque converter. It is designed for smooth, positive shifts and an easy torque converter lock-up.

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-LMM

Videos

DURAMAXTUNER.COM - BUILT TRANS

DURAMAXTUNER.COM - BUILT TRANS

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.

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