05 Denali XL
I'm trying my hardest to keep this old girl on the road.. lost a front brake line a few weeks ago, got a set of nicop lines. Replaced the leaky ones, yay, no more leak. Bled the system 3 times today, while off the pedal is pretty firm, start the truck up, no pedal at all, am I looking at a hydroboost issue? Master cylinder? I'm generally pretty patient but I'm so frustrated with this thing.