Front drive shaft wont turn when enaged and up on stands

no year.????
what are tires touching , ice, nah, dirt? must we guess?????
its and offroad vehicle so we need that. data.
both front tires have zero torque? to the ground or what.?

you can check this out on jack stands.
put it in 4wd and make sure the front drive shaft spins, does it.>?
yes, good, no then transfer case
yes then front axle lock failure. the FSM covers all this.
my wanglers all have part time 4wd drive. not AWD.
so do the testing on dirt or damage the transfer case.
wind up is bad.
the car has no center differential. so do not drive it on pavement ice free. in 4wd. or bam, bad happens.
http://www.rubicon-trail.com/4WD101/driveline-bind.html

sounds like chevy caught up with dodge!!?? actuator vacuum powered from tranny, check vacuum lines on ends especially . if not its a broken shaft witch i seen my share, or pinion gear but i doubt it should make ungodly sounds if this was so. good luck

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jeff_24365d731679262d

There is an electric switch on the front axle toward the passenger side. These are notorious for failing and they aren't too expensive. If you have a test light you can check for power at the wires before you replace it.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/justin_3ae27a9d61d6acd4

2002 chevy s10 4 door 4x4 4 wheel drive wont engage

Are your hubs locked? I assume your prop shaft is turning and your front wheels are not. If just one of the hubs is unlocked the wheels wont turn. If you push a button to enage the front wheels there are lots of sensors and servos to consider.
more info required such as the year and model.

Lift and support the front of the truck so the front wheels are off the ground ( take safety precautions, chock wheels, jack stands, etc )
Key on, engage 4x4 and try to turn the front drive shaft.
If it turns it is a problem with the transfer case.
If it doesn't it is a front axle engagement problem.

I would suspect that the front drive shaft will not turn, and the issue is with the vacuum shift for the front axle.

The vacuum disconnect motor is on the front axle ( item #10 in the picture below )


Close up of the vacuum disconnect motor ( this is in process of being repaired )


The vacuum solenoids are mounted on the firewall, and take vacuum from the vacuum reservoir to move the shift motor when the GEM ( Generic Electrical Module ) calls for a mode ( 2WD or 4WD ).
The Pink line will have vacuum on it when in 2WD mode, the Light Blue when in 4WD.
Use a vacuum gauge to verify that the vacuum is on the line when selecting the mode.

Is the system ESOF ( Electronic Shift On the Fly ) or MSOF ( Mechanical Shift On the Fly ) ?

Lift and support the front of the truck so the front wheels are off the ground ( take safety precautions, chock wheels, jack stands, etc )
Key on, engage 4x4 and try to turn the front drive shaft.
If it turns it is a problem with the transfer case.
If it doesn't it is a front axle engagement problem.

I would suspect that the front drive shaft does not turn, and the issue is with the vacuum lines for the front axle.

You can check the vacuum lines with the engine running, and have a vacuum gauge on the front disconnect motor. Pink line is 2WD operation ( unlocks the front axle ) Light Blue is the 4WD operation ( locks the axle ).

The disconnect motor is on the front axle, item #10 in the picture below


Picture of it.

may be the cv shaft between the diff and the bearing the joint freezes up on 1 cup and it will bind

you'll need to get it up on a lift or some level ground+ 4 jack stands now with all 4 in the air have somone
in the car to start and engage the 4wd if the output
shaft is turning into the differential and does not stop
turning if the wheels do you may have a bad hub
I hope this helps any other ? gimme a shout
good luck

your drive shaft thats turning is mabe broke or your automatic 4x4 lockers could be bad