Update is it needs a new grille, fog light and front bumper (slightly twisted) checked out by a licensed rebuilder. For the P0087 code (low fuel rail pressure) a Duramax specialty shop diagnosed bad CP3 pump after plugging it up and going through several test. It also has power steering pump/power booster issue that will be addressed while in the shop for the CP3 pump. Even with low pressure it drives pretty peppy a lot more quieter than the 6.0L's I'm used to but I stopped driving it until it is fixed.
