Question about 1993 Chevrolet Suburban

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What type of freon is in a 1994 GMC Suburban

Not cooling cluch kicking in and out>

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  • jmabe41 Jun 19, 2009

    Thank You!

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There should be a lable underhood.but probably had R-12,Best to go ahead and convert to R134A.Recommend replace reciever drier ,buy conversion fittings from parts house for 134A,remove compressor turn upside down and rotate clutch by hand to get as much oil out as you can,then pour in aprox 4 oz pag oil.Reinstall,change orfice tube the will need aprox 12 oz R134A to replace 16oz R-12.Buy R134A at walmart cheaper than all parts houses by at least $2.00 a can.Cgarge till low side preasure at aprox 40 to 45 psi and gigh side 200 to 250 psi.Should cool fine.

Posted on Jun 19, 2009

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The fitting size should tell you/them, but I would assume a 94' would have R134.

Posted on Jun 19, 2009

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R134a

Posted on Jun 19, 2009

  • yadayada
    yadayada Jun 19, 2009

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Jun 19, 2009 | 1993 GMC Suburban

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