[Shanna_shorty99]

two months ago my blazer started making a sound similar to an old hand cranked fire siren. I was told it was the transfer case. All my mechanic told me to do was hit the 4wd high button (push button 4wd) and then the 2wd in order to make the sound stop. The sound was due to the vehicle wanting to go into 4wd and is getting stuck in between. Since that time the the sound is more frequent. Today it would not shift out of 4wd when using the mechanics advice. I would like any thoughts on narrowing down to what needs replacing or fixing. I'm trying to figure out why its doing this and why pushing buttons is making it stop.