YES.
NO.. They are a different type.
NO.
Its on the transfer case by where the front axle connects. It's a thin case with a motor mounted on it.
If you can put the transfer case into neutral (which you need either a manual transfer case or the four button electronic case), yes. Otherwise, the only way you can without damaging the driveline is to either have a manual transmission or remove the driveshafts.
2.3 QTS.
There is no transfer case on a 2 wheel drive truck.
replace the seal
The encoder motor is located on the transfer case. The transfer case is on the driver's side of the truck. It resides between the front drive line, and the wall of the transfer case.
automatic transmission fluid
on right kick panel.
If you have a manual transmission, put it in neutral, release the clutch, press the clutch, then shift the transfer case. By double clutching it allows the transfer case to sync up. Come to a complete stop and place the transmission in neutral. Then shift the transfer case.