Hello group!need some help.
2012 NV 2500
4.0
from 0mph to about 35mph… no hum , don’t feel anything on steering wheel or any vibrations in the car…
as soon as I approach 40MPH this hum appears…the faster I go, the louder it gets.
FIRST DIAGNOSIS: wheel bearing
changed them and sound changed slightly, different, at first I thought it was quieter, but no, it was different
SECOND DIAGNOSIS:
tires are bad, internally the have bumps on the pattern… so struts are bad and wheels are bad…so I changed both front tires… NOT the struts
So…. Get on high way and as soon as I pass that 40MPH… sound is back…..
can’t figure what it is ….
can the struts cause the loud sound?
what else can it be?
would really appreciate your help