A/C will not take in Freon?

2007 CHEVROLET SILVERADO
163,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
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COLE86
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I need to know how much pag oil and Freon my truck listed above 1500 Classic crew cab will hold? Also, I had a Schrader valve go bad which leaked all the Freon out. Well, I pulled a vacuum on the system after i replaced the valve and when it got time to recharge the Freon would go in. Please someone tell me how to fix this!
Aug 9, 2022 at 12:50 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
What kind of recharge system are you using? There is a knob on the top of the charge hose valve you must tighten for it to open the Schrader valve.

Here are two videos to show you what I mean:

https://youtu.be/4EqdrBVb0sY

and

https://youtu.be/uZrQCGwXfek

If no oil comes out when the refrigerant, we lost none needs to be added. This is all the manual says in the images below. Check out the diagrams (below). Please let us know what happens.

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Aug 9, 2022 at 3:59 PM
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COLE86
  • MEMBER
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Thanks for replying. I'm using the first one with the little cans!
Aug 10, 2022 at 7:16 AM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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There are special Schrader valves for A/C only so it can't be a tire valve. Is the refrigerant still not going in?
Aug 10, 2022 at 12:35 PM