2000 pontiac montana

both radiator,cooling fans not working with engine hot, a/c on, running,,... test on #2 fan, does work.....sensor is good , relays good......does pcm need to be re programed? no service engine soon light on .....tryed to take neg battery cable off for 1 hr........but everything same......thanks for any help on this one....

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Oki Bm
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