ATS 309-815-4332 Stage 1 Allison LCT1000 Crate Transmission | 2007.5-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM PTO 4WD

Features:

• Fits 2007.5-2010 LMM Duramax 4WD trucks
• Includes upgraded ATS Five Star converter
• Deep transmission pan improves fluid cooling
• Built for heavy-duty towing and hauling
• PTO compatible for auxiliary equipment use
• High-performance build for extended durability
• Reinforced internals support higher torque loads
• Ideal for street and work truck applications
• Reduces transmission slip and heat buildup
• Improves shift quality and drivability
• Direct replacement for factory transmission
• Professional installation is strongly recommended

Unlock More Power With Confidence Every Time You Shift

When it comes to putting power to the ground and getting the most from your Duramax, a stock transmission just won’t cut it. The ATS Stage 1 Allison LCT1000 Crate Transmission offers a serious upgrade for drivers looking to gain performance and reliability without jumping all the way into a full race build. Designed specifically for 2007.5–2010 GM 2500HD and 3500HD trucks with the LMM engine and 4WD, this package is all about smooth power delivery and long-haul durability. Whether you're towing a heavy load or just cruising the back roads, the included ATS Five Star Torque Converter delivers solid engagement while keeping drivability crisp and responsive. With the deep transmission pan keeping temps in check, you can keep moving even under pressure. Built with ATS’s proven quality and attention to detail, this system is made for owners who want peace of mind without sacrificing performance. It’s the smart upgrade when you want to tow heavy and drive hard without worrying about what’s happening inside your trans.

Engineered To Handle Heat Load And Heavy Towing

The ATS Stage 1 LCT1000 Crate Transmission is more than just a drop-in replacement, it’s a professionally engineered solution built to meet the demands of performance-focused diesel owners. At its core, you’ll find a reinforced transmission case designed to handle high torque applications and prolonged heat cycles that stock units simply weren’t built for. This package includes the ATS Five Star Torque Converter, known for its multi-disc design and increased clutch surface area, offering improved lockup control and torque multiplication. The deep cast aluminum pan increases fluid capacity and improves cooling, helping maintain optimal temps even during long towing sessions. ATS also includes upgraded clutch packs and valve body modifications that enhance hydraulic pressure and shift response. This transmission is built to be used, not babied—ideal for truck owners who push their rigs hard and expect their drivetrain to keep up. Compatible with PTO-equipped 4WD models, it’s a direct fit for your 2007.5–2010 LMM-powered GM HD truck.

Fits: 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LMM PTO 4WD

Notes:

• This is a Stage 1 transmission built for improved towing and performance.
• Designed for 2007.5–2010 GM 2500HD/3500HD 6.6L LMM Duramax with PTO and 4WD.
• Includes a Five Star Torque Converter for enhanced lockup and efficiency.
• Deep transmission pan helps lower fluid temperatures under heavy load.
• Transmission is built to handle more torque than factory units.
• Engineered for upgraded drivability without full race modifications.
• Package includes transmission, torque converter, and deep pan.
• Ideal for trucks that tow regularly or see heavy-duty use.
• Installation should be performed by a qualified technician.
• $500 shipping surcharge applies and is added at checkout.
• PTO compatibility means it supports auxiliary power equipment if needed.
• This is a crate transmission and not just an internal component upgrade.