SKU: ATS309-823-4272

Stage 2 Allison LCT1000 Crate Transmission

Ships From Manufacturer in 15-20 Days
Confirmed fitment below
YEARS
2003-2004
MAKE / MODEL
GM/Chevrolet/GMC / Silverado/Sierra
SERIES
2500HD/3500HD
ENGINE
6.6L Duramax LB7/6.6L Duramax LLY
Price
$6,994.99
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PRODUCT DETAIL

Key Features & Description

Features:

  • Fits 2003-2004 6.6L Duramax LB7 2WD trucks
  • Includes ATS performance-built LCT1000 transmission
  • Comes with ATS Five Star torque converter
  • Includes deep transmission pan for extra fluid
  • Features ATS Co-Pilot transmission controller
  • Designed for 2WD trucks with PTO
  • Improves strength for towing and performance
  • Provides smoother shifts and better control
  • Complete bolt-in upgrade package
  • $500 shipping surcharge applies at checkout

Built to Handle What Your LB7 Duramax Dishes Out

If your 2003-2004 LB7 Duramax 2WD truck is starting to push past what your factory transmission can reliably handle, the ATS Stage 2 Allison LCT1000 Crate Transmission is the upgrade that keeps your power on the ground where it belongs. Designed specifically for PTO-equipped 2WD Silverado and Sierra 2500HD and 3500HD models, this complete transmission package brings together the strength, reliability, and performance you need for heavy-duty towing or high-horsepower builds. Whether your truck spends its time working on the job site or pulling big loads down the highway, this package ensures your drivetrain can handle the pressure without skipping a beat.

All-in-One Package with Proven ATS Components

This package goes beyond just the transmission. It includes the ATS Five Star torque converter to improve low-end torque delivery and reduce converter slip under load. You also get the ATS deep transmission pan, which increases fluid capacity to help manage heat when you’re towing or hauling in demanding conditions. The included ATS Co-Pilot transmission controller gives you better control over shift points and line pressure, helping your truck perform smoothly and consistently, mile after mile. With everything you need for a complete upgrade, this package is built to extend the life of your drivetrain and improve your truck’s overall performance. Please note, a $500 shipping surcharge applies at checkout.

Fits: 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 PTO 2WD

FITMENT GUIDE

Exact Fitment — Verify Your Year

Year RangesYears
Make
Model
Series
Engine
2003-2004
GM/Chevrolet/GMC
Silverado/Sierra
2500HD/3500HD
6.6L Duramax LB7/6.6L Duramax LLY

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