How to install e.fan?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bigo Serge · 02-24-2011, 12:40 AM

Hello everyone,
I have been trying to research the procedure on installing an electric fan on my 2002 silverado, but have not been lucky. My question is.....

1- Can I use the factory efan from a 05 silverado on my truck?

2- Will the efan have to be connected to the computer or will it pick up the signal from the temp. sensor and the AC relay?

3- What is your opinion about the flex-a-lite fans, and how much more does an efan increase in mpg?

Your input is greatly appreciated, Thanks

droppedgmc · 02-24-2011, 10:41 AM

1- Yes you can use the ones from an '05, but you would also need the 34" radiator. you can pick up a set of ls1 or lt1 fans for your current setup and will work fine.

2-wire it in with a pair of relays, 1 relay per fan. you can use your own temp sensor if you buy one, doesn't need to tie into the computer

3-flex-a-lite makes very good fans, expensive though. ls1/ lt1 fans can be had for $100.00 or less

Bigo Serge · 02-24-2011, 07:30 PM

Thanks DroppedGMC,
I'm going to look for a lt1 fan.

droppedgmc · 02-24-2011, 10:20 PM

i'll post some pics up for you

usmcchevy · 02-24-2011, 10:38 PM

LS1 fans and zip ties.

droppedgmc · 02-25-2011, 01:21 AM

^^ what mine looks like

Chlorin8ed · 03-04-2011, 03:16 PM

Did you notice an increase in gas mileage? Any problems with electric fans with towing?

usmcchevy · 03-04-2011, 11:52 PM

Quote:

Originally Posted by Chlorin8ed

Did you notice an increase in gas mileage? Any problems with electric fans with towing?

About 1 mpg highway, no difference city. Never had any problems towing. I didn't tow much, but had no problems when I did.

Jacfourteen · 03-06-2011, 07:27 PM

What do you get the lt1 or ls1 fans off of. Camaro? What year? I want to do this to my tahoe.

usmcchevy · 03-06-2011, 10:59 PM

98-02 Camaro/Firebird with a LS1 engine. The older Camaro/Firebird with a LT1 efans will also work. I'm going to try to throw a "how to" together on this when I get time.

Jacfourteen · 03-07-2011, 03:05 AM

Quote:

Originally Posted by usmcchevy

98-02 Camaro/Firebird with a LS1 engine. The older Camaro/Firebird with a LT1 efans will also work. I'm going to try to throw a "how to" together on this when I get time.

Thanks for the info, next time I go to the local junk yard I'll have to keep an eye out.

**Boog** · 07-29-2012, 09:34 PM

Quote:

Originally Posted by usmcchevy

98-02 Camaro/Firebird with a LS1 engine. The older Camaro/Firebird with a LT1 efans will also work. I'm going to try to throw a "how to" together on this when I get time.

I just revisited this thread and wonder if you ever got around to the fan writeup? Thanks.

02-24-2011, 12:40 AM	#1
Bigo Serge Registered User Join Date: Dec 2009 Location: Wichita, ks Posts: 59	How to install e.fan?? Hello everyone, I have been trying to research the procedure on installing an electric fan on my 2002 silverado, but have not been lucky. My question is..... 1- Can I use the factory efan from a 05 silverado on my truck? 2- Will the efan have to be connected to the computer or will it pick up the signal from the temp. sensor and the AC relay? 3- What is your opinion about the flex-a-lite fans, and how much more does an efan increase in mpg? Your input is greatly appreciated, Thanks __________________ Pick'em up, lay'em down, Oh Yeahhh Last edited by Bigo Serge; 02-24-2011 at 07:28 PM. Reason: added a question

02-24-2011, 10:41 AM	#2
droppedgmc Truck Enthusiast Join Date: Dec 2006 Location: Arlington, WA Posts: 1,346	Re: How to install e.fan?? 1- Yes you can use the ones from an '05, but you would also need the 34" radiator. you can pick up a set of ls1 or lt1 fans for your current setup and will work fine. 2-wire it in with a pair of relays, 1 relay per fan. you can use your own temp sensor if you buy one, doesn't need to tie into the computer 3-flex-a-lite makes very good fans, expensive though. ls1/ lt1 fans can be had for $100.00 or less __________________ '85 swb

02-24-2011, 07:30 PM	#3
Bigo Serge Registered User Join Date: Dec 2009 Location: Wichita, ks Posts: 59	Re: How to install e.fan?? Thanks DroppedGMC, I'm going to look for a lt1 fan. __________________ Pick'em up, lay'em down, Oh Yeahhh

02-24-2011, 10:20 PM	#4
droppedgmc Truck Enthusiast Join Date: Dec 2006 Location: Arlington, WA Posts: 1,346	Re: How to install e.fan?? i'll post some pics up for you __________________ '85 swb

02-24-2011, 10:38 PM	#5
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: How to install e.fan?? LS1 fans and zip ties. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

02-25-2011, 01:21 AM	#6
droppedgmc Truck Enthusiast Join Date: Dec 2006 Location: Arlington, WA Posts: 1,346	Re: How to install e.fan?? ^^ what mine looks like __________________ '85 swb

03-04-2011, 03:16 PM	#7
Chlorin8ed Registered User Join Date: Feb 2011 Location: Iowa Posts: 20	Re: How to install e.fan?? Did you notice an increase in gas mileage? Any problems with electric fans with towing? __________________ 1987 Chevy R10 2004 GMC Sierra 1980 Chevy Malibu

03-06-2011, 07:27 PM	#9
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: How to install e.fan?? What do you get the lt1 or ls1 fans off of. Camaro? What year? I want to do this to my tahoe. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

03-06-2011, 10:59 PM	#10
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: How to install e.fan?? 98-02 Camaro/Firebird with a LS1 engine. The older Camaro/Firebird with a LT1 efans will also work. I'm going to try to throw a "how to" together on this when I get time. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

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