I have a 1998 Blazer and the it wont engage into 4wd..
The 2wd light is on and when i press the 4high or 4low it doesnt flash or change, the 2wd light just stays on. The transfer case does not make any noises.
Any Ideas?

 

check vaccum lines.

 

If the 4Hi or 4Lo lights don't blink, then the computer is not getting the command. Maybe your push buttons are dead.

http://dl.dropbox.com/u/837001/Blaze...iagnostics.pdf

Read this carefully and see if it can help.