2001 GMC Sierra 2500 HD Q&A

2001 GMC Sierra 2500 HD Question: my ac wires keeps losing power to compressor.

i installed new compressor,new drier. and had prof. recharge system. ---no leaks...got ice cold but now it acts like it heats up and shut the power going to the compressor to deactivate the clutch. then i get hot air..if i let truck sit for awhile then start it up the ac is ice cold, but in time the clutch loses power and i get hot air...what is my problem besides being lost...and having tried all i know to keep from paying the very very high dealer prices in my area. Thanks Alot -
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