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Clarification my friends....

This is where that 90' a/c bent rubber elbow goes...? (sort've under the heater hoses on firewall) ?
192317


Also... another is issue I'm having is a sound of like air coming out of a balloon under the dashboard, close to the center, passenger area.... I have NO leaks, no steam.... so I don't think its a heater-core.... I did search and found this....


Any other ideas my friends....?

Thank you kindly.....

JESSE ONE
 

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Yes it is, and add a length of clear hose draining closer to the ground. Alot of GMs use vacuum to actuate the heater plenum doors for mixing - diverting air. The hiss is more than likely a loose or broke tube. They're tiny so may not affect driveability. More suspect if anyone's ever been rooting around modding stuff in the dash.

EDIT: Well I clicked on that thread, - yep all covered there.
 
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