I have a 94 4wd 4drautoBlazer with the 4.3land the 4wd is not working. No matter whatgear its in it will not shift into 4hi or 4lo. It has the electronic t/c. when you first turn the vehicle both 4hi and 4lo lights flash once. the light will not even flash when you try to shift it into 4wd. Any suggestions would help. Thanks

 

check 4x4 relay under the hood in the big fuse box on driver side

 

Thanks I'm gonna try that when i get the chance to get to it. I'll let you know how it goes.