Charging AC.

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OR VietVet

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Can anyone tell me where the low charging connection for the AC on a 2011 Chevy Tahoe is?
You do you and do what you want BUT, are you going to try and hook up a "Suicide Kit" and charge your own a/c system without having the high side attached to a gauge to monitor it?
 

OR VietVet

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Like I said, Suicide kit.

Sorry, but if you no idea where the low side port is, are you sure you should be tapping and charging a pressurized system? If you do, be careful.
 

91RS

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If it’s empty you need a vacuum pump to pull a vacuum on the system before charging. Also, just be aware that it is illegal to charge up a system you know is leaking. Since it is a closed system, if it is low on refrigerant, you definitely have a leak.
 

tom3

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Any chance the cabin air filter is dirty and clogged up?
 

wjburken

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To answer the original question, the low pressure port is in the accumulator. The connection in the AC Charge Pro will only fit on the low pressure port.

I would suggest you take the head unit with the pressure gauge off of the can or refrigerant and simply use it as a pressure gauge to see what it’s reading or save the $60 at Autozone and take it in to get checked at a shop and have it evaluated.
 

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