hvac

Hi all! I'm finally putting my cockpit and living space back together after a nearly 6-year-long frame-off restoration of the automotive bits of my 1973 GMC MotorHome. The Original HVAC System I started this summer with a bare firewall, ready for prep and paint. I dug my original HVAC box out...

A great Presentation at 2018 GMCMI Convention, Tucson on the operation of the HVAC control panels and the vacuum actuators. Includes vacuum hose and electrical diagrams. https://www.gmcmi.com/wp-content/uploads/2018/04/GMCMH-AC-Control.pdf

Having tried for a couple of years to keep the dash AC working in our '73 Sequoia, it became apparent there was a leak somewhere. Found it in two spots: The very old condenser, probably original, had failed along a seam. There was also some simple loose connections on one hose and was likely...