ATS 309-815-4362 Stage 1 Allison LCT1000 Crate Transmission | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML PTO 4WD

Features:

• Fits 2011-2016 GM 2500HD and 3500HD trucks
• Compatible with 6.6L LML Duramax engines
• Designed for 4WD models with PTO option
• Includes ATS Five Star torque converter
• High-performance LCT1000 automatic transmission
• Deep transmission pan improves fluid cooling
• Stage 1 upgrade enhances durability and longevity
• Ideal for towing and heavy-duty applications
• Improves torque delivery and shift response
• Built to handle increased power and stress
• Backed by ATS engineering and build quality
• $500 shipping surcharge applies at checkout

Bring Confidence Back To Your Transmission Game

If your Duramax-powered GM truck is starting to feel the strain of long hauls, heavy loads, or the occasional pedal-to-the-floor moment, it may be time to upgrade to a transmission package that keeps up. The ATS Stage 1 Allison LCT1000 Crate Transmission is purpose-built for 2011-2016 Silverado and Sierra 2500HD or 3500HD 4WD trucks equipped with a PTO. Whether you're towing a trailer full of toys or navigating steep job sites, this transmission delivers the reliable performance you need to stay in control. It comes complete with the ATS Five Star Torque Converter, deep transmission pan, and is designed to boost torque management without compromising drivability. Expect firmer, more responsive shifts and a longer service life even under demanding use. This is not just a replacement, it’s an upgrade that brings back the strength and confidence you expect out of a heavy-duty drivetrain. Backed by ATS engineering, this is a package that’s ready to match your work ethic mile for mile.

Built With Performance Durability And Cooling In Mind

The ATS Stage 1 Allison LCT1000 Crate Transmission package is engineered to meet the demands of the 6.6L LML Duramax platform found in GM 4WD trucks from 2011 through 2016. This setup includes ATS’s proprietary Five Star Torque Converter, designed for improved torque multiplication and enhanced lockup control. The included deep transmission pan increases fluid capacity, helping dissipate heat during high-load towing or heavy use. With its reinforced internal components and recalibrated valve body, this transmission is optimized for improved clutch engagement, torque handling, and longevity. The addition of a PTO-compatible housing ensures it integrates seamlessly with utility builds or commercial applications requiring auxiliary power. From line pressure calibration to stronger internals, every part of this transmission is tuned to maintain gear train integrity under stress. It’s a reliable and efficient upgrade for anyone who demands more from their rig without moving into extreme racing or competition territory.

Fits: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML PTO 4WD

Notes:

• Designed specifically for 2011-2016 6.6L LML Duramax 4WD trucks with PTO.
• Package includes performance transmission, Five Star torque converter, and deep transmission pan.
• Built to handle increased torque loads under heavy towing and hauling.
• ATS Five Star Torque Converter improves lockup and torque multiplication.
• Deep transmission pan provides better fluid capacity and cooling.
• Compatible with stock and moderately modified engines.
• Professional installation is highly recommended due to drivetrain complexity.
• Core charge and shipping surcharge may apply at checkout.
• Not designed for competition or extreme racing applications.
• PTO compatibility supports commercial and auxiliary equipment setups.