Hi guys,after some search on forum,I can't find.
My problem is that the 4x4 HI don't want engage since 2 days(last week it works fine and all last winter too!!).
the 4x4 LO works normaly.

when I push the 4x4 HI button while the vehicule is moving on the road,nothing happens.

whit the vehicule stopped,at neutral,when I push the 4x4 HI ,I heard a serie of 4-5 clicking noise and after nothing.

somebodys have clues about my problem?

Thank you guys!!

Blazzerium(96 blazzer 3 buttons switch)

 

The good news is, its prob not the transfer case, cause it does work in 4 low. Your actuator may be starting to go(but normally 4X4 wouldnt work at all in that case) and there is also a switch underneath on the front end that may havve gone bad

 

thank you lowe42,
I did some search on the net and find someone who already have this problem.He said that he had disconnect the battery for one hour,and after 4x4 work fine.

I did the samething,and magic! my 4x4 hi engage normaly.

I think it's the transfer case transfert module in the dash who tripped.
I will see what happen in the next weeks,if the problem come back,I probably looking for change the module.
what do you think about that?