Hi Everyone

i have a 1994 blazer 4wd ,my problem is my 4x4 works only in neutral and only 4wd lo,but if i pull the tccm fuse keep it out for 1/2 hour i get everything working but only for approx 2 times then back to the same no 4wd hi.

vaccum actuator works fine tested

any ideas i'm out of them

thanks
marc

I have the exact same problem did u ever get it fixed?

i just had the same problem its the third computer on the stack of them