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Simplified Electric Fan Post


vdrumright

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  • 1 month later...

sorry to bring up a old topic. is there a way that i can let the pcm control the fans all the time, but still have a switch in the cab to turn them on sitting in the staging lanes? ummm, yeah, ahhhh, i mean sitting in traffic lol!

 

kinda like what this guy did for his tranny cooler in this post:

 

http://www.silveradoss.com/forums/index.ph...ST&f=13&t=21792

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sorry to bring up a old topic.  is there a way that i can let the pcm control the fans all the time, but still have a switch in the cab to turn them on sitting in the staging lanes?  ummm, yeah, ahhhh, i mean sitting in traffic lol!

 

kinda like what this guy did for his tranny cooler in this post:

 

http://www.silveradoss.com/forums/index.ph...ST&f=13&t=21792

 

maybe something to this effect:

http://store.summitracing.com/partdetail.a...15&autoview=sku

http://www.macsradiator.com/index.asp?Page...WPROD&ProdID=65

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  • 10 months later...

Just printed the first page with the part#'s. Is there a part # for the GM 05 harness or Im I just going to have to go with the Nelson? If I missed any thing please let me know and give part # if you have it thanks and this is verry helpful.

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Just printed the first page with the part#'s. Is there a part # for the GM 05 harness or Im I just going to have to go with the Nelson? If I missed any thing please let me know and give part # if you have it thanks and this is verry helpful.

 

 

Call Nelson for the harness, I just installed my set about a month ago and used their harness...It's top notch.... :cool:

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Call Nelson for the harness, I just installed my set about a month ago and used their harness...It's top notch.... :cool:

Is the Nelson harness 3 relay, or 4? Do the fans have both a low & high speed, and does the harness also tie into the A/C?

 

Mr. P. :)

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Is the Nelson harness 3 relay, or 4? Do the fans have both a low & high speed, and does the harness also tie into the A/C?

 

Mr. P. :)

 

 

Mr. P,

 

If you are using the defrost or AC, then one fan turns on high...If the engine reaches the preset rate with AC or defrost on, then both fans come on..If AC is off and engine reaches temp, then one fan turns on low....It's a 3 relay system, mount relays on the cover of the PCM, plug the fans in, insert wire into pcm connector and tap into the harness next to the alternator, and your done...

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i've been trying forever to find out how to put my 05 factory e fans on a manual switch. anybody got an idea for that?

 

 

Do you want to disconnect them from the computer all together and only run them with the switch, or are you wanting to control them in conjunction with the computer?

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