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Q: Clutch Fan Replacement on 1999 GMC Sierra 1500

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How do you replace the clutch fan on this truck? How do you hold the water pump shaft to loosen the fan clutch nut? Which direction do you turn to loosen it -clock wise or counter clock wise?
(1) Answer
There are special tools available to hold the water pump pulley and loosen the fan clutch. The threads on the fan clutch are standard. Counter-clockwise to remove and clockwise to install.
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