Strange sound underneath the car
I have been experiencing a strange sound while going uphill road with a speed of around 50m/h or more. There is a whining sound from underneath the car and buzz feeling. The sound was there for long time but I prefered to ask you guys to see if this can be manageable. I live in PITT, PA and most of the surrounding areas are uphills and inclines.
I have a 2011 GC V6 with all time 4x4, & love it.