Jul 16, 2018 · Connecting the HVAC controls to the vacuum source at the engine is simple enough. The HVAC control system has only one section of tubing (gray) that passes through …

Aug 10, 2011 · The best reference material on the C3 HVAC system is in the Chevrolet Chassis Service Manual in the "Air Conditioning" section. The main vacuum feed comes in through the …

Mar 10, 2000 · There are several vacuum servos that open and close the various doors that control airflow. Check the vacuum feed from the engine first and then check for vacuum at the …

Jul 17, 2016 · In their diagram they show it near the bottom of the airbox towards the firewall, but mounted on the side of it closest to the driver. The vac motor on mine in located at the bottom …

Mar 1, 2014 · Connecting the HVAC controls to the vacuum source at the engine is simple enough. The HVAC control system has only one section of tubing (gray) that passes through …

May 21, 2014 · Yes, my vacuum resevoir is hooked to manifold vacuum and then the small line hooks to it and runs into the cab. Tomorrow I'm going to pull the line off the kick panel and …

May 8, 2008 · Each post titled with the appropriate section followed by a scanned, hand drawn or pdf drawing or photos. Links to vacuum systems would be great too. Some attachments might …

Sep 25, 2018 · On my '04, fan speeds and temperature could be adjusted, but vent selection was 100% non-functional. I originally thought that the selector knob was actually rotating the …

Jul 21, 2017 · Using a vacuum gauge to determine if you have full vacuum at any given point is the best way to find it. You can cut into the line anywhere and splice it back together with a …

HVAC drawings are detailed mechanical diagrams that show a complete HVAC system, including equipment locations, ductwork, piping, and air conditioning components. These drawings help …