1993 s10 blazer 4hi and 4lo lights come on for about 2 seconds when key is turned on. After that when buttons are pushed nothing happens. Fuses good, vacuum lines seem to be intact. Any help would be greatly appreciated

 

This is the writeups in the forum about the electric transfer case switch and NV233. You may want to start from here

https://blazerforum.com/forum/articl...-switch-25087/