[j cAT]

with your vehicle I would look at the hubs and the front end steering components especially the tie rods.

when you greased the front end did you see broken grease seals? any joint play with one wheel on the ground and the other off and your working the wheel/hub when looking at these joints.

remove the tire and then remove the front wheel sensor from hub is the grease rust colored ?

if the hubs are bad do not buy any cheap chinese hubs. only get the timken hubs.

this is 4WD ?

If the steering wheel vibs this is not the drive shafts . I would still check them out however since this is a new vehicle to you.

you also should check all the drive train fluids and at least replace the transmission filter and fluid. with 4wd you will need to do much more fluid replacing.