2002 Pontiac Montana vibration from floor when accelerating really bad from 35 to 50 mph it seems like it is coming from driver side axle. It will vibrate where the passenger seat shakes.
The van vibrates really bad when accelerating. Seems like it is coming from the driver side wheel or axle. It is the worst from 25 to 50 mph. I just went on a trip and put on 600 miles in two days. Now the vibration is pretty steady. Also if I let go of the wheel while driving it pulls to the right. Put 2 new tires on a month ago.