Diesel exhaust fluid (DEF) is nothing new. GM’s Duramax-powered Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups ...
Versus the competition: It’s not quite as capable as a Ford F-150 Tremor or Silverado 1500 ZR2, but the Trail Boss is a great option if you need a truck that can handle an occasional muddy two ...