Vacuum Trouble Shooting 69

[Erv M.]

I have seen many articles concerning vacuum systems for the wiper door and headlights. Is there a book out there that addresses the vacuum system starting at the console that controls the AC and ventilation ducts?

I need to understand the basics mechanics and air flow of the system to include how to test the actuators, etc.

[Daniel S.]

Re: Vacuum Trouble Shooting 69

There is a vacuum troubleshooting guide available at most Corvette online vendors.

http://www.docrebuild.com/dr-r-web/TROUBLE1.HTML

[Erv M.]

Re: Vacuum Trouble Shooting 69

I am looking for information concerning the Climate Control Vacuum system. A decent diagram and what exactly takes place with the actuators as you move the dials on the climate control to different settings.

There is ample information regarding the headlights and wiper door on the internet but I have not seen anything of value concerning the climate control system.

[Jack H.]

Try,,,

your copy of the '69 Chassis Service Manual. I know for '71 cars in the A/C section of the CSM, there's a vacuum truth table describing when each line from the climate control is vac vs. vent based on the climate control's selector position...