I became a member a month or so ago. and have been reading alot of post. Well my 4 X 4 stopped working the typical I push the button and hear the clicking but no 4 X 4. I was thinking great this is going to cost me alot. Came back hear and searched and went out to my truck and pulled the batt & batt holder and found the problem. My actuator diaphram was tore. 50.00 and 15 mins later I have my 4 wheel drive back. Thank You Blazer forum.

 

Excellent! Glad you fixed your problem!