Certain units of 2020 through 2024 GMC Sierra 1500 and 2020 to 2024 GMC Sierra HD pickup trucks, as well as 2021 to 2024 GMC Yukon SUVs, equipped with one of several available Duramax diesel engines, ...
Diesel Exhaust Fluid (DEF) is a critical part of a modern diesel-powered vehicle’s emission control system. Made of automotive grade urea and de-ionized water (32.5% and 67.5% respectively). It’s ...