The DT12TM On-Highway Series of automated manual transmissions builds upon the DT12’s proven reputation to provide a trio of purpose-built solutions for on-highway applications. All three models offer:
The Detroit DT12-HE transmission is an all-new, extremely efficient option for those customers looking to reduce fuel consumption as much as possible. The DT12-HE is built for customers who demand the ultimate performance from their transmission. Design enhancements include:
*Available in 2021
An automated manual transmission (AMT) offers the benefits of both a manual and automatic transmission. Its design uses an efficient clutch instead of a torque converter, but the clutch and shifting are handled by a computer-controlled air system. Even a novice driver can get to work with minimal effort and fuel—and maximum productivity.
The DT12 On-Highway Series transmissions provide 12 speeds for increased efficiency and flexibility. Its two-pedal design allows the driver to focus on what’s ahead instead of what’s underfoot, increasing safety and productivity. As a bonus, seamless integration with Detroit engines and safety systems promotes optimal performance.
Click through the tabs below to learn more about the DT12 features and benefits.
Transmission automatically disengages when the vehicle is coasting to help maximize fuel economy.
The Transmission Control Module (TCM) sends electronic commands to “skip” unnecessary gears, helping increase acceleration to achieve cruising speed quickly and smoothly, and allowing the driver to accelerate in the appropriate “start gear” based on load and grade.
A Common Powertrain Controller (CPC) optimizes high-speed communication between the Motor Control Module and the Transmission Control Module, improving operational efficiency throughout the entire powertrain.
The Transmission Control Module (TCM) calculates the torque wind-up in the driveline and regulates with engine torque control for enhanced driving comfort and less driveline wear.
Intelligent Powertrain Management (IPM) pinpoints the truck's location and looks over a mile ahead to anticipate terrain. IPM will adjust cruise control, pre-select gears, eCoast and brake the engine to maximize efficiency into the road conditions ahead.
The aluminum housing and single countershaft help save weight, allowing for even more payload efficiency, while still offering excellent durability.
DT12 transmissions are available with a proprietary rear-mount-only Power Take-Off (PTO) that may allow customers in the bulk-haul tractor/trailer market to operate applications using liquid trailers, dry goods, wet goods, and moving floors.
DT12 on-highway series transmissions vary across a range of truck models.
If maintenance issues come up while on the road, you can count on Detroit™ Connect Virtual Technician℠ remote diagnostics system to let you know how serious the fault code is, as well as where, when and how to fix the issue so you can make informed maintenance decisions and get back on the road faster.
Learn more by visiting the nearest Freightliner or Western Star dealership.Find Nearest Dealer
All DDCSN content has been migrated to our DTNAConnect web portal. All information previously on the DDCSN is now on DTNAConnect. We have created a quick reference guide to help you locate the migrated content on DTNAConnect. Existing DDCSN login credentials will also work with DTNAConnect. Please work with your security administrators for login or content issues. If you do encounter any technical issues, please contact the Software Support Center at 855-639-8680 or firstname.lastname@example.orgDTNA CONNECT PORTAL LOGIN