hey im lookin at a 1994 blazer LT Tahoe v6 vortec motor with 170 000km not sure if it has electronic **** or manual shift to 4x4 but im told that he can hear it shift into 4x4 but it will not engage does anyone have an idea to what this problem is should i buy this truck?

thanks

 

94 is push button (electronic) most common problem is vacuum line/actuator easy fix if thats what it is.

 

sounds like im on the right path with this thing then any suggestions on what to look out for when i go to pick this thing up