Wheel on 1999 Ford Expedition locking up in reverse

There's something seriously wrong in the transfer case or controls. It seems the rear driveshaft is locked up, and the front wheels are driving. The driver's side rear tire is skidding because it's trying to turn backward - rear passenger rear tire is going forward and rear differential has no option but to turn the driver tire in reverse (driveshaft locked). DON'T TRY TO DRIVE IT. Get it checked out and fixed.

It's on the side of the transmission under the drivers door. The shift cable runs to the control arm it is under.

You can try shifting into manual 1 to get moving then once you get going shift the lever up into Drive. This should work, then drive it to a shop to have your ****** looked at.

Make sure your fluid level is good..If so your transmission filter may need changing

u need to raise the wheels off the ground an disconnect the drive shaft an spin the wheels by hand u may have a bad posi unit. the stress of breaking the shaft may have caused this

remove the rear wheels and inspect the braking system. something is loose or has been bent to stop you truck

Sounds more like brakes, Possible springs or wheel cylinder.

Look for stainless steel clips above the lamp assembly in the support frame around the radiator and grill. Lift these clips straight up to allow the lamp to tilt forward letting you reach behind it to un-clip the pigtail and turn the retainer ring counter clockwise. Pull the bulb straight out the rear of the lamp assembly, keep bare fingers and dirt off the new bulb glass and reverse the order of dis-assembly.

Unplug your speed sensor. (located on top on transmission on left hand side can be reached from right side) If the problem is the same replace the sensor this should fix your problem.

If no oil on the driver side, you have a locked up parking brake pivot. Follow the park brake cable to the inside plate of the rear wheels. on the outside, where the cable connects, look to see the position of the visible mechanism connected to the cable. It probably will not match the side that is not locked up. This is a very common problem; you need to replace the park brake pivot. Additionally, you are going to need to remove the other side axle shaft and get the leaking oil seal replaced. Replace the brake shoes if they have oil on them.