Question about 1995 GMC Sierra C1500

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Regrigerant for 1995 Sierra - 1995 GMC Sierra C1500

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You should have R134a, you can tell by the quick connect ports that you use to fill your AC system. the 134a use larger ports that have 2 different sizes, one of the caps will be about 5/8 of an inch in diameter and the other will be about 1/2 on in diameter. If you still have the old R12 system you will have both caps about 3/8 of an inch in diameter.

Posted on Apr 21, 2013


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Posted on Jan 02, 2017


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Unplug the bypass connector. Tan wire, black tracer. It is either under the cover on the firewall under the hood passenger side or by the passenger side foot area.

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