Question about 1999 GMC Suburban

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Ac recharge how do i locate port for recharging ac

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  • jermann 544 Jun 13, 2008

    I'm looking for the a/c charge port on a 1999 Buick Regal w/ 3800 s/c engine. There is a port on firewall and one (easier to reach) just behind the air intake. Which one is the suction?

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You have a large diameter suction pipe 1/2" and a small pressure pipe 3/8" coming from your a/c compressor, follow the larger pipe until you come to a plastic cap sitting on the line, take off cap to see filler valve. Looks like a large tire valve.
Gerry

Posted on May 31, 2008

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