Re: 2000 Jeep Grand Cherokee front wheels not working
Which 4 wheel drive system does it have?
Was any part of the drivetrain changed lately? If not, i would first jack up one of the front wheels and see if it can be rotated with ease. If it does, then there is something wrong inside the differential. (when your jeep is quadra drive, then the varilok inside the differential will lock both front wheels together after a few rotations, so it will stop rotating) If the wheel can not be turned freely, i would remove the front propeller shaft and see if the front T-case output yoke can be turned. There is some play on it, depending on how much the T-case chain is stretched, but it should not turn freely.
I would open up the front diff and see if there is any damage to the ring gear, the pinion gear or the diff gears. If ok, then its time to check the CV axles. They are inserted into the differential, but maybe the splines on one side are damaged. It happened before with other guys, that they installed new axle shafts, and lost the front wheel drive. A too short axle shaft was the problem.