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electric fans on nnbs 3500 6.0

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Old 02-26-2013, 11:21 AM
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Default electric fans on nnbs 3500 6.0

Cant find much info on it. Anybody do this mod on here? What size temp probe will i need and where should i put it? I ordered a 160 tstat. i saw a fitting somewhere in another post that goes inline with a coolant hose that you can thread a sensor into but now i cant find it...
Old 02-26-2013, 12:20 PM
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I did electric fans on my 2003 3500 6.0, I had the PCM tuned to control the fans. Prior to that the fans where controlled with thermo switch, was a major hassle and never worked reliable. PCM tune is the best by far!

PCM tune for efan control only $45
New Dorman efans $130
E fan harness $80
Old 02-26-2013, 01:32 PM
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Justin at blackbear said its not possible on the e78 controller hmmm. I need it to be reliable..maybe no intake and e fans for me lol
Old 02-26-2013, 01:39 PM
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Originally Posted by forklord
Justin at blackbear said its not possible on the e78 controller hmmm. I need it to be reliable..maybe no intake and e fans for me lol
Can you change to the e38?
Old 02-26-2013, 04:51 PM
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Put a thermoswitch in the passenger side head and use it to kick on a relay that turns on the fans. That would be pretty reliable.
Old 02-26-2013, 09:16 PM
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is there a spot on the head i can thread the sensor in?? its a 2012 ly6
Old 02-26-2013, 09:30 PM
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I don't know how heavy you tow or how you plan on using the truck but there is a very good reason gm left a fan clutch on those trucks. I tried the electric fan route on my 07 3500 and with a large trailer and heavy load they could not keep it cool in temps over 85 degrees outside. I wound up going back to the fan clutch and shroud and never looked back.
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