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Electric fan programming on truck ecm?

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Old 05-18-2011, 12:42 AM
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Staging Lane
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Default Electric fan programming on truck ecm?

Hey guys,I have some searching here and i think i know the answer but thought i would double check. I am using a 5.3 truck motor( not sure the prefix?) and I am going to be running electric fans,can my factory ecm be reprogrammed to run these fans or do I have to get a standalone fan controller? The motor is a 2001.
Thanks for any help.
Old 05-18-2011, 02:45 AM
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C1 pin 42 can be set for fan 1
C2 pin 33 hvac recir door can be used for fan 2
Old 05-18-2011, 06:53 AM
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You have to activate the fans in the tune as well.
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Old 05-18-2011, 07:43 AM
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Great thanks for your help.



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