Stage 2 Allison LCT1000 Crate Transmission

Features:

• Fits 2004.5-2005 6.6L LLY Duramax 4WD
• Includes ATS performance-built LCT1000 transmission
• Comes with ATS Five Star torque converter
• Includes ATS deep transmission pan
• Features ATS Co-Pilot transmission controller
• Designed for PTO-equipped trucks
• Improves towing power and reliability
• Optimizes shift timing and lock-up control
• Engineered for heavy-duty diesel applications
• Complete crate transmission package

Serious Transmission Strength for Your LLY Duramax

If your 2004.5–2005 GM Silverado or Sierra 2500HD or 3500HD 6.6L Duramax is starting to outwork its stock transmission, the ATS Stage 2 Allison LCT1000 Crate Transmission is the upgrade you’ve been waiting for. Designed specifically for 4WD models equipped with a PTO, this complete package is built to handle the added stress of towing, heavy hauling, or increased horsepower. It includes ATS’s fully built performance transmission, paired with their Five Star torque converter to improve torque transfer and low-end response. The deep transmission pan not only boosts fluid capacity but also helps keep temperatures down when you’re working your truck hard. Together, these components deliver smoother shifts and better durability under demanding conditions.

Total Package with Advanced Control Features

This transmission package is more than just upgraded hardware. It also comes with the ATS Co-Pilot Transmission Controller, which allows you to fine-tune shift timing and torque converter lock-up for improved performance and drivability. This added control helps reduce wear on internal components, making your transmission last longer while handling higher power levels with ease. Whether you’re towing heavy loads, running aftermarket tuning, or just looking to build long-term reliability into your truck, this package has everything you need. It’s a direct-fit solution designed for real-world use, giving you confidence on the road or at the job site. Please note that a $500 freight charge applies at checkout for shipping.

Fits: 2004.5, 2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY PTO 4WD

Includes:

• ATS 4WD w/ PTO 2004.5-2005 Allison LCT1000 Performance Transmission
• ATS Allison LCT1000 Five Star Torque Converter (302-950-4248)
• ATS Allison LCT1000 Deep Transmission Pan (301-900-4248)
• ATS Co-Pilot Transmission Controller (601-924-4248)
  

Note: $500 Shipping surcharge will be added at checkout