A/C Service Valve defective

[outlaw]

Hey there. Been a while since my last post.

Quick story-
Bought truck in winter, didn't really test A/C
Used A/C first time today (per wife), no cold air. (checked fuse, relay... good)
Found no refrigerant in system
There is 2 valves, 1 looks like a tire valve steam, the other a weird rubber piece.
Looks to be service valve leaking. When I removed the cap, I could hear it's faint hiss.


My questions-
Can I just go into a local store like autozone and ask for a service valve, and they know what I mean. Or is there a different name?

Are these the same?
2003 GMC Yukon XL 1500 A/C Service Valve at 1AAuto.com
---
AC Delco 15-5438 A/C Valve Core | Auto Parts Warehouse

Can I replace with the other valve type and prevent this from happening in the future?
2003 GMC YUKON XL 1500 A/C System Valve Core and Cap Kit


Here's a couple pics.

Pointing to defective valve-

Looking down into defective valve-

Thanks!
Outlaw

 

[MAY03LT]

Can I just go into a local store like autozone and ask for a service valve, and they know what I mean. Or is there a different name?

They can be called service ports, service fittings, or service valves. The autozone/advanced auto by me doesn't sell them, they only sell the ports for the r134a conversions. I get them from napa.

 

[outlaw]

Thanks for the reply.

Do you or anyone know if this port can just be sealed?
or
Can it be replaced with the other valve type (looks like a tire valve/core)?

Thanks again,
Outlaw

 

[c good]

The cap that you removed is the secondary seal. It's normal for them to leak ever so slightly and not uncommon for them to let out a faint hiss when removed. Unless the thing is flowing out gas, it's probably not the problem. Do a pressure check on both the high and low side ports and go from there.

 

[CaptainXL]

Can it be replaced with the other valve type (looks like a tire valve/core)?

The valve cores for AC systems are specific and use a different type of material than tire valve stems. So no.