Originally Posted by caroga
2016 Greyhawk 31DS has a 5 speed with overdrive. We just picked ours up in January and the vibration/harmonic issue was not an issue. They will remedy the problem if you have it. I would talk to the dealer AND to Jayco about it
This isn't a Jayco model year issue. Its a Ford chassis model year issue
. 16's and up have the 6 speed transmission, which changed the geometry of the driveline, which causes the hum.