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- - fan clutch diagnostic hlp pls (https://67-72chevytrucks.com/vboard/showthread.php?t=114439)

roger_h

08-04-2004 10:08 PM

fan clutch diagnostic hlp pls

Anyone have simple(ton) way to determine if fan clutch is working properly?

Vehicle is 97 GMC Sierra

tia

99-2door

08-05-2004 12:45 AM

Watch the fan while the truck is running. Kill the ignition. If the fan keeps moving for more than a moment after the engine is killed , it is bad. Also if you can spin the fan with the engine off and it moves more than a little bit.

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