Re: Driveline vibration
Reply #2 –
You can take a flat pry bar or large screwdriver, pry up on the harmonic balancer and see if there's any play in it. Anything significant and a P3 fix is called for. Coach needs to be at running height to do this so best to drive rear wheels up on blocks. Raising and blocking will put the driveshaft in enough of a bind that you won't be able to move balancer, at least on my rig.