ok i had blazer jacked up and was letting down the jack and it slid off and broke part of my front axle that engages the front wheels to lock in it comepletly broke off the cable going into axle that conects to the vacum servo for the 4 wheel drive i have a pic and i have no clue easiest way to fix this it looks like the side it broke on un bolts from front housing of axel whats is it called and where would i find one junk yard wants me to take it off and take it in but if i do that i aint gonna be able to drive blazer and i have no other car i have pic from under side can any one help me

Where and if I can find just that side of axle and that cable or what its called so I can look around at junk yards around here or if any one got one they wanna sell

 

4wd Front Axle Clicking When in 2HI - Goes Away when in 4HI/4LO
This thread shows some exploded views as well as a picture of what it looks like inside after the passenger side extension tube is pulled.

From the looks of it, you have broken both the cable mount and the shift fork. You will likely have to drop the passenger side extension tube to fully assess the damage.