GM has issued a service bulletin for a DEF sensor problem fix for the 2020 to 2024 GMC Sierra 1500, GMC Sierra HD, and GMC Yukon involving module recalibration.

If you’ve had your diesel RV or tow vehicle suddenly lose power because of a DEF (diesel exhaust fluid) issue, you’re not alone. And now, the EPA is stepping in with changes that address this problem.

In recent weeks, DEF sensor failures have left thousands of trucks parked, with a scarcity of replacement sensors leaving carriers scrambling for solutions.

Master’s Transportation outlines maintenance tips, diagnostic tools and rental solutions to keep school bus fleets safe, ...

Limp mode is something you don't want your Cummins engine to go into. However, if it does happen, here's why and what you need to do to get it out.

The Environmental Protection Agency (EPA) announced a revision to diesel exhaust fluid (DEF) guidelines to prevent diesel on-road trucks and off-road equipment from severe power loss after running out ...