Can't help with the issues; just wanted to say what a great looking truck that is. Love the graphics.
I'm feeling the vibration on the steering wheel 08fjcruzWelcome! Are you feeling the vibration in the steering wheel or does it feel more like the rear end? I also have a RC6" lift and was experiencing vibrations around 60-70MPH and it was the rear driveline causing it. Bought a double cardon driveline and issue fixed.