4 wheel drive not working

[Bward1955]

When I engage 4 wheel drive the front drive shaft does not turn the actuator motor works and shift it to 4 low even but still will not turn front drive shaft I replaced the transfer case thinking that was problem but the new used transfer case does the same thing I have a hard time believing I got a bad transfer case doing the same thing please help it's a 2000 chevy silverado 1500 extended cab 4x4

[rjgti]

so yo changed a t-case without doing any trouble shooting. check your wiring harness and switch and fuses

[Bward1955]

Is there any reason that the front drive shaft would not engage if the motor to switch the transfer case is switching it to four wdr which it is is the another cylinoind that makes front drove shaft work I have done all the diagnostics I know to do I assumed that the motor t swi h into 4wd wad the only electronic part of the mechanical t case if there is more I would love to know that would help instead of telling me to check all the stuff I have already checked and considered

[rjgti]

you never mentioned you did check anything, so good luck with that issue