my 4x4 works awsome never let me down, but it seems whenn in 4x4 hi tht its so much more noise like vibration i think its just the front end spinning and the front drive shaft, and i have checked for play in the front drive shaft and there is absolutly nun at all. i just wanted to see if anyone else has this? oh and this is only in 4x4 in 2wd there is no vibration.