A/C question. High and Low pressure. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-08-2008, 11:02 AM   #1
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Default A/C question. High and Low pressure.

So I am going to recharge me A/C system using a a/c charger can with a gauge attached to it.

My question is, It says to connect this to the low pressure port. Which one is it?

there is one port on the top, and one lower down closer to the radiator.

thanks in advance.

also, is there anything else that I should take in consideration while doing this?

thanks.
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Old 05-08-2008, 12:31 PM   #2
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The one on the top.
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Old 05-08-2008, 12:34 PM   #3
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The high pressure line is the smaller one. Low pressure is the bigger one.
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Old 05-08-2008, 12:37 PM   #4
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Thank you both
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