Need Help With 82 C10 A/C Vacuum Lines.

[Bill Yetman]

thanks but the ash tray was missing also. this is one of those projects you wish you never started...and its not for me I'm doing it for a friend....

 

[Bill Yetman]

Thank you but the truck was missing that part as well...

 

[RayDar]

Hi Bill, did you ever get the diagram you were looking for? I have a 77 k15 with 9 vacuum ports also. I get close but not close enough. It would help if I just knew what # the source (from the firewall) plugged into.

 

[Mojave_Muse]

thanks for the knowledge i might be able to scrub mine out.
seem as rare as hens teeth on the net.

 

[75gmck25]

After a fair amount of work, my A/C controls now work mostly correct. One remaining problem is a bad connection inside that white plastic housing that has all the vacuum connections, but all the replacement controls I've found do not include the vacuum housing. They just sell you the dash control unit it bolts onto.

I have a hard copy of the GM repair manual for my truck, and its pretty complete in the description of the A/C controls. Have you checked the manual downloads from this site? For example, the attachment below is the vacuum line diagram for a 1977.

All the lines are color coded with stripes, and you can still buy the GM hard line to splice lines that are broken. You can use short sections of regular vacuum hose to splice the hard line.

Bruce

 

[Craig 85]

After a fair amount of work, my A/C controls now work mostly correct. One remaining problem is a bad connection inside that white plastic housing that has all the vacuum connections, but all the replacement controls I've found do not include the vacuum housing. They just sell you the dash control unit it bolts onto.

Bruce

Here's a prior thread about the switch.
https://www.gmsquarebody.com/threads/a-c-vacuum-switch.10457/

On my '79 I found the vacuum control on ebay. It was about $80 for an NOS part 6-7 years ago. Here's the part numbers GM 470333 or ACDelco 15-71518. The Camaro uses the same part; I believe that is what I used. Per GM parts books this was used from 76-82 in C/K vehicles.

https://www.ebay.com/itm/4016638529...7wIVSCitBh0E7wxrEAQYASABEgLcsvD_BwE#vi-ilComp

You must be registered for see images attach

You must be registered for see images attach