I have a '95 Blazer, and i am attempting to fix my 4wd. I have looked at quite a few posts on the topic, and have run into a question that i am hoping someone can answer for me. The vacuum switch on my blazer is a 2 prong switch, but the auto parts stores in town carry a 3 prong switch. what gives? i am a little lost as to what i should do if i need to replace it. will i have to replace any wiring?

Thanks,

Tymaraux

 

Are you sure that you only have 2 vacuum lines leading off of the vacuum switch??

 

i am sure. its the plug like thing with a ball in the end that pushes in, correct? 2 prongs.

 

Can you snap a picture...?