Question about 2003 GMC Sierra 2500HD

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Need to take clutchfan off to replace waterpump

It's a 2003 GMC Sierra.there are no bolts in front of the fan blade ,there are four small bolts in the back of the fan and there's also a large nut between the fan blade and the clutch.

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  • Rick Byrd
    Rick Byrd May 11, 2010

    hi , that LARGE nut is what needs to be unscrewed , it will require special tool , some parts stores will have a loan-a-tool program to borrow or rent this tool , and ask them how to use it , call some part stores , then the job will be easy .




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To take fanclutch off undo the big bolt, fanclutch will come off

Posted on Feb 22, 2009

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Don't remove the fan , remove the fan mount.There are 3 bolts and 2 studs holding the mount to the block. Remove the oil filler tube and plug to stop foreign material from entering the block,cover the rad to protect it from the fan then when you remove the fan and mount it will come straight up passed where the filler tube was.

Posted on May 28, 2009


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