Question about 1997 Pontiac Grand Am

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1997 Pontiac Grand Am SE High & Low Air Conditioner Service Valve

I am looking to recharge my air conditioner and I ran into some problems. Which connection is my high service valve and which is my low? I see a connection with a red cap, then I also see a connection with a green cap with some text by it that says its the evap service valve. If the evap is the low, and the red cap is the high, do i need a special connector to the low valve, since the gauge low hose does not fit the connection? The engine is a 2.4L.

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Red is high
green is low
you can charge the low side until
the large line is almost cold enough to frost at the accumulater

Posted on Jun 24, 2009

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The connection at the evaporator is the low side and if you have 134A you cannot use r12 gage set.Get the 134A gage set!

Posted on Jun 24, 2009

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SOURCE: Recharging air conditioner

START AT THE FIREWALL WHERE THE LINES CONNECT, MOVE ALONG THE LINES ABOUT 10 - 12 INCHES OR SO. THE LOW SIDE CONNECTOR SHOULD BE THERE UNDER THE WIPER TRANSMISSION BEHIND THE COIL PACKS. THE HIGH SIDE IS NEAR THE COOLANT RECOVERY TANK. YOU MAY HAVE TO LIFT IT FROM THE RETAINER.

Posted on Jun 02, 2009

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