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  1. #1
    Jr. Engineer
    Join Date
    Aug 2010
    Location
    eas' bum fuk, maine
    Posts
    207

    Default e-fan wiring for 02 4.3l

    i must have missed it in my search, i had my ECM reprogramed for electric fans on my 02 4.3 k truck. they guy who did the programing was not able to tell me which to terminals on the ecm need to be wired up to make the low/high fans turn on. far as im aware, a truck WITH electric fans from the factory uses differnt terminals the a PROGRAMED ecm. that is my understading. please correct me if im wrong.
    "i dont think you got the picture. i got a beautiful picture. this baby happens to have an extra turn of speed, which is the only thing i care about. you dont understnad what happens do you? they make cars. they make 'em exactly the same way. one or two of 'em turn out to be something special. nobody knows why. i know why. i may be kiddin' myself, but i think i can make somethin' out of that sad little bucket of bolts." ~ Tennessee Steinmetz

  2. #2

    Default

    Go to nelsontune . Com they sell relay kits and harnesses. I think they have a writeup on there somewhere.
    01' 1500 LT Z71 ECSB 5.3L
    line-x'd front brush guard with KC Daylighters, 6000k HID lows and highs, rewired highbeams, Trans-go mild shift kit, custom stainless duals, 3500 dually OEM taillights, K&N CAI. Still have OEM fender flairs and leveling kit in boxes waiting for time.


  3. #3
    Jr. Engineer
    Join Date
    Aug 2010
    Location
    eas' bum fuk, maine
    Posts
    207

    Default

    I have the really and a harness already installed. I dot know what wire needs to b added to the PCM to ground the control side of the relays

  4. #4

    Default

    right now, i have my efans plugged into "black 9", and ive heard this is the aux. fan plug for our vehicle, yet i still have not gotten my efans tuned..... still cant find a couple of days to actually send my pcm to justin at blackbear tuning, so he can retune it with tunercats, to enable proper control, and it has to be done by mail.... (texas to california) i cant support myself a week without my truck...
    as of now, with no pcm aux fan tune, my fans are on with ignition and cycle through hi/lo with a/c
    2000 Chevrolet Silverado

    Powertrain:
    4.3L V6, 4L60E, 2WD, Single Cab
    Performance:
    Airaid CAI
    Poweraid TB Spacer
    Flowmaster 10-series exhaust (dumped)
    BLACKBEAR TUNED!!!
    Edge CS insight monitor
    4.10 gears
    Limited-slip differential
    LS-1 Dual Electric fans
    Corvette tranny servo swap

    Audio:
    Head Unit: Alpine
    Speakers: Alpine SPR-60C 6.5" component set, 4X6 Infinity Kappas
    Subs: 2-12" Kicker CVT's
    Amps: Alpine-M1000 (subs), Alpine MRX-F65 (Speakers)


    Tires/Wheels:
    305/70R16 NITTO Terra Grapplers
    16" PROCOMP 7089's
    Suspension:
    2" leveling kit
    3" Fabtech Spindle Lift Kit
    Front/Rear-Bilstein 5100 shocks

    Lighting:
    FRONT
    35W HID Low Beams
    RECON LED smoked roof cab lights
    REAR
    HELLA LED taillights and 3rd brakelight
    HELLA FF-75 Aux. Reverse Lamps
    RIGID dually D2, flush mount, wide beam
    Accessories:
    Hawk HPS Brake pads
    Russell braided steel brake lines
    Powerstop-red powdercoated brake calipers
    Powerslot Cryo brake rotors
    EGR in-channel window visors

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