could be many things start ppurchase the owners manual best 20$ youll spend
if the 4x4 isn't working then you need to check your transfer case. is it making any noises? or did it just stop working?
A 1996 Chevy Blazer Does have a transfer case IF it is equipped with 4 wheel drive
What's the question?
With a manual transmission, manual transfer case, or four button electronic transfer case (which has a neutral position), yes. Otherwise, you would have to disconnect the driveshafts.
Could be the vacuum actuator, or it could be an electronic fault, if you have an electronically controlled transfer case or an all wheel drive vehicle.
In most cases, you will find the speed shift sensor for your 1998 Chevy Blazer located on the backside of your transfer case. The transfer case is located on the transmission.
Corrosion. Check connection at the module for corrosion.
Remove all wires attached to the transfer case. Remove the driveshafts. Drain the fluid out of the transfer case. Place a transmission jack under the transfer case. Unbolt the transfer case from the transmission. Unbolt the crossmember the transfer case rests on.
it located right in back of the tranmission.
Replace the seals.
on the top of the transmission its on the transfer case with 3 vacuum lines coming out of it.
It's toast, replace it. Or have flying chunks of metal stuck in your ass.