My 95 Blazer will go into 4HI if I take the negative battery cable off for a second and put it back on,after that I can put it in 4HI. The next day the process starts all over again.For instance,if I want to use the 4HI (for a day)I must do the battery cable trick,the next day 4HI will not work.What the hell is wrong with this thing ?????????

 

go to this thread im haveing the same problem and this exsplains the whole thing to a t!

https://blazerforum.com/m_186201/tm.htm