For diesel engines to work their best, precision is everything. That's why, unlike traditional gasoline-powered engines, a Duramax diesel engine has two thermostats. After all, there are some ...

General Motors has been using Duramax diesel engines in certain workhorse models for nearly a quarter century. The 6.6-liter V8 version which powers Chevy Silverado 2500/3500HD and GMC Sierra Heavy ...