Need Help WIth Heater Box Question
Thread Starter
Instructor
Joined: Jul 2008
Posts: 123
Likes: 0
From: Allentown PA
Need Help WIth Heater Box Question
Hello,
I was wondering if someone could help me with a heater box question. There is a door behind the dash that looks like it is part of the heater or ac system. The door does not appear to have any vacuum actuator connected to it and I am wondering how it is supposed to operate. Maybe a cable connects to it or there is an actuator behind the door? Anyway, any help you can give would be great. Thanks to everyone for posting great information on this site, it has allowed me to do a lot of things that I would not have been able to do otherwise! Here are some pics, hopefully they come out ok.
I was wondering if someone could help me with a heater box question. There is a door behind the dash that looks like it is part of the heater or ac system. The door does not appear to have any vacuum actuator connected to it and I am wondering how it is supposed to operate. Maybe a cable connects to it or there is an actuator behind the door? Anyway, any help you can give would be great. Thanks to everyone for posting great information on this site, it has allowed me to do a lot of things that I would not have been able to do otherwise! Here are some pics, hopefully they come out ok.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Behind the heater box is a vacuum actuator. You can’t see it, but if you feel behind (If you have small fingers) the main box there is a vacuum hose. If you go to this link you will see where this valve is located. http://willcoxcorvette.com/repairand...lp.php?hID=247
This door is vacuum operated and diverts the air in different positions of either cool, defrost or floor.
It was not illustrated in the 1968-1982 Assembly manual so the only way to actually see how it functions and where it’s located is to look at this schematic. This page will also show you have each vacuum hose in the heater and a/c system functioned.
Willcox Inc.
This door is vacuum operated and diverts the air in different positions of either cool, defrost or floor.
It was not illustrated in the 1968-1982 Assembly manual so the only way to actually see how it functions and where it’s located is to look at this schematic. This page will also show you have each vacuum hose in the heater and a/c system functioned.
Willcox Inc.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
69,
Did you go to the picture on the link I gave you? It has the colors of each hose listed.
Tan striped is what you need and it connects to the number 4 position on your vacuum select switch in the console.
Willcox Inc.
Did you go to the picture on the link I gave you? It has the colors of each hose listed.
Tan striped is what you need and it connects to the number 4 position on your vacuum select switch in the console.
Willcox Inc.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Yes it can be hard to read and more so when you can not see the part on the car you are looking for.
Just imagine the parts in the picture like you were looking over top of it. This is the diagram from the GM assembly manual and it is on the money. But not being able to see the actuator I can understand the confusion.
Willcox Inc.
Just imagine the parts in the picture like you were looking over top of it. This is the diagram from the GM assembly manual and it is on the money. But not being able to see the actuator I can understand the confusion.
Willcox Inc.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski