No.
T-Case is most likely an NP229
front or rear? the front is slightly higher and rear of the drain... the back has a cover you remove to drain the fluid and a fill on the front of the diff..
the front diff is part of the gearbox and the diff/gearbox oil is the same-there is a dipstick on the offside of the box near the bellhousing.
It sounds like you need a new actuator. there is two things that lock in when you use 4x4. one is the transfer case and the other is the front diff. the front diff is turned on by an actuator. if you have a problem with the actuator the front axles wont lock in. even though the transfer case is engaged.
the front diff is not engaging its not the transfer case which is manual the solenoid needs replaced
it could but is not likely to the transfer case transfers power to the front diff, not the rear
A truck is normally driven from the front.
Front axle half shafts need to be removed also the front diff and the half crossmember has to be removed to give access to pan.
Dana 44 front diff and 9.25 rear diff
You will need to remove the plate on the housing to drain it. There's a fill plug on the front side where the drive shaft hooks to it.
Garbage trannies and front diff actuator
No it will not, It is all different. Actually yes it will i have to correct you om that i have a 96 blazer same front diff as an s10 and 96 to 03 are the same i just put a 2000 front diff in mine