3 Articles
Official

All 4500HD, 5500HD and 6500HD models have the 6.6-liter Duramax diesel.

All 4500HD, 5500HD and 6500HD models have the 6.6-liter Duramax diesel.

Official

Surprise unveiling at an event celebrating 100 years of Chevy Trucks.

8 years later, Chevy admits the "man step" is a good idea.

A patent was granted in December 2016.