Now on to the front locker; so far we have not experienced ANY of the negative characteristics commonly associated regarding an automatic locking differential in the front axle. In fact, in 2WD we can barely tell we have a locker at all! There is no binding whatsoever, only a mild clicking sound that you get used to rather quickly. While in 2WD, the front axle receives no torque from the driveshaft and does not actually "lock" the differential. In fact, Tony from TracTech says that it is impossible for the front differential to lock without receiving input power from the driveshaft.
This means that while the transfer case is in 2WD mode, the front differential can NOT lock.
Note: Since a locking front differential will spin the front driveshaft while in 2WD mode, front driveshaft vibration CAN occur under the following conditions: Improper front driveshaft angles (associated with suspension lifts) and/or an unbalanced front driveshaft.