Location of HVAC control vacuum line
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From: Wisconsin
Car: 1991 RS Camaro
Engine: 400 Smallblock
Location of HVAC control vacuum line
I guess this is the forum for this...I'm trying to find where the vacuum line input for the HVAC controls goes to on the firewall, I looked around and can't find any real obvious rubber hoses coming out. A pic would be extremely helpful but if its too much trouble just point me in the general direction.
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Location of HVAC control vacuum line
Should be just under and on the driver side of the heater box. There will be two plastic vacuum lines there, with the wiring for the heater blower motor. One is going in to the controls from the vacuum tree, the other is coming out to the heater diverter valve.
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From: Detroit, MI
Car: 1991 Z28 Vert
Engine: LT1 350
Transmission: T56 6 Speed
Axle/Gears: 3.42 LSD
Re: Location of HVAC control vacuum line
Any pics of those lines and how they connect to the diverter valve?
Thanks,
Jay
Thanks,
Jay
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mdtoren
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Aug 16, 2015 05:45 PM





