Why does my cool air come out the top vents of my 1995 gmc jimmy not the front ones and sometimes not blow out at all?

Check for a vacuum leak either under the hood or under the dash Check the operation of the vacuum motors under the dash Check the selector switch.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.