heater core vacuum lines? [Archive] - GrandAmGT.com Forum


View Full Version : heater core vacuum lines?

07-22-2010, 09:44 PM
well, i was doing some work on the 'ol GA and ended up taking the vacuum lines off the heater core (the multicolored ones going from the back of the HVAC control to all over the heater box), and like an idiot i didnt label them or anything thinking i wouldn't have them off that long and would remember where they went. and now, a week later, i go to put them back on and have no idea where each end goes... so my question to you guys is does anyone have a pic of the dash out of the car with all the vacuum lines in? so i can try and follow that and figure out this little set-back...

07-28-2010, 05:24 AM
jeez, nobody?

08-04-2010, 01:57 PM
Wish I could help. I'm trying to figure out how to put wires and hoses how they are supposed to be, instead of all sloppy and all over the place since having the head gasket and intake manifold gaskets replaced. :(

08-06-2010, 10:40 PM
which wires and hoses? and what do u mean where their supposed to go, in the engine bay? i might be able to help with those

08-06-2010, 11:59 PM
jeez, nobody?

Is that it?
lol I held a mirror in there and shot a pic thru the ACC plug door, but I'm not ready to take that apart anytime soon... Won't it be different for different models?


08-07-2010, 01:08 PM
ya, those are them... im tryin to figure out where the other ends of those hoses go on the heater core, that pic does kinda help with direction tho i guess. thanks AleroB888

08-07-2010, 04:34 PM
those are the HVAC Vacuum lines, if am remembering this right that is on the mode selector, those vacuum lines go to different small vacuum pumps on the HVAC unit that opens and closes the doors to change the direction of the air flow.

08-07-2010, 05:51 PM
ya, i got the drivers side half in, i just dont know which pump fittings the 4 lines on the passenger side go to... their the green, orange, blue, and purple vacuum lines that i dont know which pump they each goto