Fourtraxjay Posted February 11, 2011 Report Share Posted February 11, 2011 Hello All, Long time reader, First time poster. I have searched this site and many others for an answer to my question. I could not find it in any how-to's or forum posts. I'm installing e fans from a 05 in my 03 Silverado SS. Now that I have removed the stock fan/clutch assembly, what do I do about holding the pulley on the water pump now? Do I need a new Nut to take the place of the large nut attached to the stock fan/clutch? If so anyone know a gm part number, or thread size/ pitch etc? I should be done soon when I resolve this, That is after I get into the PCM pins with those pia plastic harness holders on the PCM. (squeeze the ends and pull up?- ya ok sounds easy.....) Any help would be much appreciated Quote Link to comment Share on other sites More sharing options...
Cramer Posted February 11, 2011 Report Share Posted February 11, 2011 It is not needed. The "nut" is part of the mechanical fan, and does not hold on the pulley to the water pump. The pulley is press fut to the shaft. Quote Link to comment Share on other sites More sharing options...
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