making a winding noise on 2005 Chevrolet Astro

my astro is making winding noise like something is freezing up

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1 answer
Does it do this with AC off? If it does then remove (or have this done) drive belt to see if noise goes away, if so check driven componets, Alt., AC pulley, belt tensioner/idler pulley(s) ect. If it does this only with AC on most likely a compressor problem!