vacuum ball in 92 blazer?cant find?

[mybigredford]

where is the vacuum ball located in my 92 blazer, & lines my climat control only blows air from defrost and floor no vent at all,need help with this one. any ideas

[Gabe25]

Your vacuum lines are located behind your plenum. You should have a check valve that splits the line into 4. I would start there and trace to vacuum lines looking for leaks. 9 times out of 10 your check valve is shoot and needs to be replaced. Hope that helps.

[mybigredford]

i took out the climat control switch, and found where all the vacuum lines conect to it in the back . on the other side of the circular connection there is a small black round plug, its ends where cracked and was not holding everything tight. i went to the junk yard found an old switch, replaced the little plug and now it runs like new again. thanks for your help though. glad i didnt have to tear apart my hole dash.

[Gabe25]

Good for you. Ya, tearing about the dash can be the pits..