Question about 1990 GMC Suburban

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What is the refrigerant capacity for a 1990 GMC Suburban with rear air

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If you're talking about a/c,it can't even be done unless it's by a shop.If your complete a/c has been updated within the last 15 years then it can be done.Pre-1995 used R-12 freon.1995 and after use R-134a freon.The R-12 requires a special permit just to buy,sell,use,or dispose of.The systems are non-compatible.The R-134a may fit the old filler,but it will not provide any cooling whatsoever.Sorry man.Greg

Posted on Aug 20, 2010

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