Duramax dual alternator option?
We live in the PNW, but are looking to travel! We have never owned or driven a diesel, but plan on buying one when the new HDs come out. Are the dual alternators & engine block heater desirable opti...
Forum Discussion
IF you order the engine block heater, check to see just how it operates. My understanding is that all the newer GM block heater cords have a thermostatic control that will not allow it to operate until the outside temp reach 0°F. I know my 2011 GM is this way.
