When we first rolled our 2002 Chevy Silverado 2500HD into the bay at PPE Diesel's shop in Montclair, California, we thought for sure the transmission was toast. Interestingly, upon inspection it was ...

Cummins engines are popular because of their reputation for reliability and undemanding maintenance and the availability of upgrades. Due to the robust design and plentitude of aftermarket parts, it's ...

The progressive build of our ’07 Chevy 2500 Duramax diesel project truck was much like the average diesel owner might experience. We began with suspension upgrades and added a tuner, followed by ...

Allison Transmission announced it has transitioned its software offering to a yearly subscription service by releasing Allison DOC Premium V2017.1.0. Jan. 13, 2017 Allison Transmission announced it ...

Next year, heavy-duty GM trucks will lose their Allison badges, even though the transmissions themselves won't change.