Originally Posted by ShopSpecialties
Make sure batteries are charged up and it takes a fair amount of cranking to fill the rails/lines back up if they were empty.
Is your Duramax same as mine? I was told that its a LBZ detuned to LLY has slightly smaller injectors and a little less hp. By the way how much is quite a bit? I thought I have cranked on it more than I wanted to already.