GMC Sierra

I have a 2001 gmc sierra 5.3 the ac was not coolling that much so I added 2 cans of 134 refrigerant the ac got even hotter so I drained atleast 1 can out still nothing the compressor started making a noise so I drained more out but it still not cooling the compresor is not broken it works fine a friend told me that the ac had to be flushed with a special allchol and the accumulator had to be changed what can I do to fix my ac I have a new born its really hot here in florida. Thanks
August 7, 2007.

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