and a rock-free mode that helps rock the truck free from mud, sand or snow. TX-12 Pro was introduced for heavy-duty and medium-duty Peterbilt models in March 2024. In August 2024, Peterbilt began ...

Peterbilt is now offering the Paccar TX-12 Pro automated transmission with the Paccar MX-13 engine in the Models 579, 567 and 589. The company says the combo offers optimized performance for both on- ...