The L5P and LBZ are considered two of General Motors' best Duramax diesel engines, but each comes with its own strengths and ...

The Duramax L5P is already a powerhouse, but smart upgrades and proper tuning can take it to the next level without sacrificing reliability. From advanced monitoring tools to first-to-market tuning ...

If you are tired of eating up front disc brakes and having to lay on the brake pedal longer than you’d like when your late-model GM HD pickup is towing a big gooseneck or heavy tow-behind trailer, we ...