Can i remove the front differential of my awd yukon and drive it

You have AWD? full time all-wheel drive.
Transfer Case Description and Operation
The Borg Warner (BW) model 4481, RPO NR3 transfer case is a one-speed, full time, all wheel drive (AWD), transfer case. The transfer case provides power to both axles, through an external planetary type differential, which has two different sets of pinion gears. The planetary differential provides a 40/60 torque split, front/rear, full time. This means both axles are constantly being driven for maximum traction in all conditions.
The transfer case external type planetary differential functions the same as a typical rear axle differential. The transfer case differential pinion gears function as the spider gears, and the sun gears function as the side gears.
The following actions occur because of the planetary differential:
• If the vehicle is on a hoist, the front propeller shaft can be rotated by hand.
• The vehicle cannot be driven if one propeller shaft is removed.
• Operating the vehicle on the hoist can damage the differential pinion gears, by over-spinning.
• Operating the vehicle with one propeller shaft removed causes over-spinning of the differential pinion gears.
The BW 4481 design of the planetary differential allows the use with the Vehicle Stability Enhancement System (VSES) vehicles. The VSES takes use of the planetary differential, by applying braking to a tire that has less traction and dividing the engine torque to the other axle.
The BW 4481 case halves are high-pressure, die-cast magnesium. Ball bearings support the input shaft, the front output shaft, and the rear output shaft. The transfer case requires DEXRON®III ATF GM P/N 12378470 (Canadian P/N 10952622), which is red in color.

This system does not have an encoder motor.

Some info general info
https://www.youtube.com/watch?v=nCvUaebXWmY
Link above may help without removing transfer case. Unless you
https://www.ford-trucks.com/forums/666707-how-to-bypass-awd-to-make-it-2wd.html

https://www.youtube.com/watch?v=9s6Aky4fFVI
May have removed front drive shaft due to front differential problems as in video above.
https://www.youtube.com/watch?v=O2clBpsT75w

Transmission trouble codes on link below. May help you figure what is wrong with yours.
https://www.transmissionrepaircostguide.com/mercury-mountaineer-transmission-problems/

You have an all wheel disabled message because there is an error in the system.

awd drive cars have a differential action between front and rear wheels and there should be a switch that allows you to lock up that action for adverse conditions
if the rear wheels are not working , it is because there is no drive action to the front wheels ( front wheels spinning or broken drive shaft to the front)
all wheel drive means that in normal driving when there is traction on all 4 wheels that the power is transmitted evenly to all 4 wheels
It is not 4 wheel drive where power is applied to both axles or in the event of one axle loosing traction the other axle still drives

either lift engine up or drop front differential out i would remove diff remove cv axles front drive shaft then all mounting points on the front end then should be clear shot to oil pan

-Possibly time to replace new one.


Mai

Slapping sounds like a transfer case chain

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The AWD feature is on all of the time and can not be turned off.

A Tech on "Just Answer" - Ford web site answered it.