Today I just had air out of my vents, the temp worked but I couldn't get it to switch to defrost or floor. I fussed around with the problem and eventually what I did was removed every line from one tee, and then plugged in the following three lines to the tee: the one off the engine that creates the vacuum, the one that goes to the transfer case, and the one that goes inside for climate control. My question is since I'm bypassing the reservoir, what will this do to the performance of anything, and would it be worth my time to go back and hook it up the way its supposed to be.

99 Blazer 4.3L 4x4 manual climate control, auto trans

Thanks for any input

 

Without the reservoir, you will lose vacuum to the hvac & transfer case when under high throttle angles. I would figure out what is leaking & where then fix the problem rather than cut a rather large part of the system off.