slight vibration under floor board

[OgreSmash]

maybe someone here may know what it is. during driving or just sitting idle I'm feeling a slight vibration under driver floor board. any ideas?

 

[SHOdded]

Usually driveshaft/carrier bearings. Does it go away in P or N?

 

[OgreSmash]

not sure. bout to leave for work right now. will report back later and let u know

 

[krewat]

If it's doing it while you're sitting idle as you said, sounds like a motor mount.

 

[OgreSmash]

does it in N and P. but I also noticed that my tow truck has the same vibration. maybe I just never noticed it before.

 

[SHOdded]

Could be motor or trans mount as krewat suggested. You can watch or record the trans mount behavior to see if it flexes while the engine is revved in P (with parking brake on of course).

 

[krewat]

My 2013 and 2016 SHO's were/are smooth as silk at idle - even when it's slightly misfiring, I don't "feel" anything in the floor or anywhere.