Higher speed causes Hum and vibration.

[TroyClark]

Hello all,

I just recently bought a 2013 CC 1500 with only 17,000 miles on it. We took it to Colorado for Thanksgiving and I noticed that up to 74 MPH the truck ran smooth and at 81 MPH and above it ran smooth. But, between 75 and 80 MPH there is a noticeably louder hum coming from the front of the truck and the truck has a noticeable vibration. Has anyone else experienced this ? I had all four tires re balanced before I bought the truck so I know its not that. Any ideas would be greatly appreciated. If I can't figure it out, I am going to take it to my local dealership before the 3 year/36 month warranty runs out it January.

Thanks for looking

P.S. Love my new Ram.

 

[Hemi450hp]

Is the truck stock height? I would double check the tires first, but if the pinion angle is off or the driveshaft is out of balance, that can also cause a vibration and hum like you mentioned.

 

[TroyClark]

As far as I know, the truck is totally stock. I will ask the dealership to take a look at it when I take it in for a couple of recalls here in a week.

Thanks