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mode switch will not change from face, feet defrost. blows thru all constant

9

98GTPPACE

New member
I am having trouble with my hvac vacuum lines. Air blows thru all the vents defrost and all that; as if stuck behind the dash constant. I have seen the diagrams but i do not understand; I posted the link below can anyone help me.The vacuum line from the top of the supercharger that runs behind the fuse box seems to be alright, yet it is disconnected under the glove box. and where the purple wire from the vacuum solenoid there is a black hose which leads to no where. Also a yellow line that is not hooked up ether.:mad:

http://www.justanswer.com/pontiac/4gl67-pontiac-grand-prix-gtp-a-c-air-blows-vents-floor.html
 


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