How to install E-Fans

[JennaBear]

The blue wire is the perfect length to mount the relays to the PCM cover. Glad you got it all up and running!

 

[Rivieraracing]

Jenna, do you have a picture of the location you are referring to? Mine are just ziptied to another wire loom and would like to find a good spot for them!
Glad you got them going Britain, hope you like them, I love ours!

 

[JennaBear]

I will have to see if Justin has any pics of the way it was on the Tahoe.

 

[bsims3996]

The blue wire is the perfect length to mount the relays to the PCM cover. Glad you got it all up and running!

thats exactly where i mounted mine

 

[Britain Smith]

Now you tell me.

-Britain

 

[JoeOmerta]

Does the #42 pin have to be activated in order for the fans to work? If i were to install this, and not have time for a few weeks to get it turned on, will the fans still keep my a/c and engine cool without the use of an external on/off switch?

 

[grayhoe00]

Does the #42 pin have to be activated in order for the fans to work? If i were to install this, and not have time for a few weeks to get it turned on, will the fans still keep my a/c and engine cool without the use of an external on/off switch?

i am wondering the same thing.

 

[JennaBear]

Yes, your PINs have to be turned on in order for e-fans to work.

 

[dwmmatt23]

Yes, your PINs have to be turned on in order for e-fans to work.

was wondering the same myself, well it looks like ill have to order a tune with the harness and install at same time. Thanks

 

[candyman74]

electric fan turn on pin

i have an 01 tahoe and my question is will i be able to turn the pin on to run electric fans in my truck? a local place told me i might not have the pin on my ecm.

 

[dwmmatt23]

i have an 01 tahoe and my question is will i be able to turn the pin on to run electric fans in my truck? a local place told me i might not have the pin on my ecm.

I hope you have the pin if not im S.O.L. everything i have read indicates that we do

 

[chip]

Love the write up!

 

[waxworkz]

ok guys i need some help!! the green wire for the ac isnt turning on my passenger side fan! it works when i test it with a test light, turn positive when i turn on the ac. but when i connect the green wire from the BB harness it doesnt do anything. seems to be not enough voltage to turn on the relay. i even tried another relay and it wont trigger them. any one have this issue before? how did you guys test for the right wire??

 

[ScottyBoy]

ok guys i need some help!! the green wire for the ac isnt turning on my passenger side fan! it works when i test it with a test light, turn positive when i turn on the ac. but when i connect the green wire from the BB harness it doesnt do anything. seems to be not enough voltage to turn on the relay. i even tried another relay and it wont trigger them. any one have this issue before? how did you guys test for the right wire??

This is the right wire you need to connect to on the bottom of the underhood fuse block.

 

[plush]

and where do we buy these fans and harness?

 

[jdpber]

Ok quick question. has anyone done the E fan upgrade but with a standard after market (summit, jegs) fans and wire them in and use the threw the louvers like you can get at the parts store or order Online. VS the factory housing.. i am simply curious.. i am going to try and find some factory fans but may have had no luck so far.. and this is a back up plane.. we can call it "THE PLAN B"

 

[chip]

Ok quick question. has anyone done the E fan upgrade but with a standard after market (summit, jegs) fans and wire them in and use the threw the louvers like you can get at the parts store or order Online. VS the factory housing.. i am simply curious.. i am going to try and find some factory fans but may have had no luck so far.. and this is a back up plane.. we can call it "THE PLAN B"

I've done it. It works great if you do it right.

 

[bottomline2000]

call me crazy, but I swear Rock Auto has the factory fans for $146! They are Dorman which is the factory brand. I'm kicking myself for not looking here before sifting through the local junkyards. I paid more for mine out of an 05 Kon.

I'm pretty sure the NNBS fans will fit the NBS since the layout is the same, even the fan motor connections. only difference seems to be the fan blade count is higher and more curved.

Had I found these earlier I would have been the guineau pig to see if they fit. FWIW I paid about $250 for my junkyard take offs..ugh.

http://www.rockauto.com/catalog/raframecatalog.php

 

[jdpber]

can you make a better link it didnt go to the fans.. thanks

bc for that price i will order a set and call it a day..

 

[bottomline2000]

lets see if this one works. http://www.rockauto.com/catalog/x,carcode,1433255,parttype,2181

If not, you can search by
part# 620654
Brand: Dorman

they also have a higher blade count one
part# 620653
brand: Dorman

this one is $177


If you order it, let us know how it works out.