Electric Cooling Fans on a 99-04 Silverado ft TURBO 8.1 BUILD ALMOST DONE
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- เผยแพร่เมื่อ 25 ก.ค. 2024
- Thanks to FarmerJohnson Off-Road for sending in an electric fan harness, and check out one of his videos on how to remove an electric fan harness at the junk yard. / 93xjheep
In this weeks upload, we take care of one of the last things that are stopping the turbo 8.1 Silverado from driving and tuning, and thats the electric cooling fans operating. I already had installed the 2005+ Silverado dual electric cooling fan assembly, but had never wired it up so today thats what we take care of. I'm using a factory fan harness assembly which fits nicely into the stock fuse block and looks, well, factory. The nice thing is it operated just like factory as well, with the low stage coming on at 195* and the second dual stage coming in at 208*. When both fans are running at high, the truck should never over heat.
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Chapters:
0:00 Welcome
4:00 The harness you need
5:05 Installing the Harness
8:13 First Test
10:00 Pinning the ECM
13:12 Tuning the Computer - ยานยนต์และพาหนะ
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Gotta love factory-ish swaps cause everything goes together properly. Do it right the first time and you dont have nearly as many issues down the line
my sentiments exactly. thanks for watching!
5👍's up LT thanks again for taking us all along with you for the great news
Awesome information on the installation of the electric system and horse power saver. 🐎
so excited to see it tuned and on the road soon
ive loved following this build its amazingly clean, i am interested to see how to integrate the electric
cooling system into the computer next
great job! love your approach, and all the info! thanks LT!
Glad you enjoyed it!
Almost at 30k subscribers! Keep up the awesome stuff man.. your TV time/skills show in your content; your editing and info are top notch & you never have any filler. Sweetness.
I appreciate that!
Thank you you had the most informative video on this topic and helped me complete the job on my 2004 Yukon Xl 2500 with the 8.1
good call on the OEM cooling harness. I had a buddies 03 that had an electric fan swap with aftermarket kit die on him out on the trails. Luckily i have a pretty good knowledge of the wiring, and i pulled out the relays and bridged power to get us back home. not bad for just having a pocket knife and some duct tape.
What is the extra step if you want to keep the ac function
😂
Congrats on the 30k, I'm pulling for ya. Always learn something by tuning in!
I appreciate that!
Great video LT. Like the way you test the harness functions.
Thanks 👍 seems to go smoother if you test partway through an install, that way if there is a problem you can isolate it quicker rather than looking at the whole thing already installed.
So close to 30k! Congrats LT’
killing it with all the little technical bits that everyone else leaves out! keep it up!
thanks!
Well that's just must be because you are a fan boy because he said there's another step you need to do for ac but then he never said what that was. Since he doesn't have ac he figured everyone else doing this shouldn't have it either.
I did this swap on my 03 Suburban 2500 about a month ago. I actually learned about the HD fans from one of your earlier videos. Thanks! I'm looking forward to pulling my camper in the mountains this summer and not having the clutch fan rob so much power.
sure thing! they move a ton of air for sure, and from what I have read, the HD version does a great job keeping the engine cool even when working it hard
I used to do this type of conversation at the dealership all the time. We used to get fleet Focus's without crusie control very cheap. Add the factory contol switch, or change the steering wheel in some circumstances, enable crusie control in the PCM, and factory cruise.
Best video on how to do this. Thanks.
Almost at 30K!! Congrats!
Love this Channel. You do a great job delivering information the internet it vague about. I wish I had this build footage 4 months ago! My build is dang near the same as yours and the fans kicked my butt.
Cheers from Idaho
thanks so much! thats the goal, is to provide valuable info to help others along the way
@@LawrenceTolman If you know, would you mind sharing how this would pin into the ECM if AC is still equipped? Also if this were done with AC would the ECM still need to be programmed in order to provide the negative/ground to the fans at the desired temps? This install is great BTW. Texas heat and my GMT800 do not get along when I am sitting for too long and there’s no air circulation through the radiator. I would love to do this conversion!
you know what you doing ... love you man ... thanks for the vid.
Another very informative video. Keep them coming.
Thanks, will do!
I have a 2001, I’m looking to do this in the future. Thanks for the video tutorial.
Glad I could help
This video actually helped me natrow some options. Fan works(both). Realy works. When I tested with the blue wires on negative of battery it works. Fan was working fine until a Heather core conection broke. Now won't come on. New temp sensor was installed.
I've been waiting on this. Thanks LT!
Hope you like it!
Can’t wait to see the first burnout🤘🏼🔥
me too!
Nice work LT! Looks great. I also support the "factory appearing" mindset. It makes for a clean install and fewer issues down the road.
My thoughts exactly
@@LawrenceTolman fh he cchc
So excited also!!!!!
Keep it up! Looking good!
Thanks!
Clean install. Nothing like wiring it like OEM and not just a bunch of wires just laying in the engine.
thanks! i cant stand messy wiring and "add-ons" that look out of place
Hey LT, Don’t I remember seeing you on Power Nation? So glad I stumbled onto your channel. I have a 2000 Silverado 5.3l that I’d like to do this Efan swap on. Clutch fan sucks and I love the thought of having factory Efans and hardware. Just subscribed to your channel. Haven’t looked if you did a parts list for this swap yet but, wanted to give you big props for this video. So many crap videos out there, it’s nice to watch a real mechanic do it and tap your knowledge. Thanks!
Hey, congrats on 30k, even if it is a few days after the new year. Keep it up! 100k+ Here we come!
That's the plan!
I see the subs are going up keep those great videos coming LT
29,900 Congratulations!!!
Really good info, lets hope it doesn't snow until AFTER burnouts.
well, the snow will just make the burnouts that much easier lol
Awesome job LT !!!
Thank you! Cheers!
@@LawrenceTolman did you upgrade the ECU for the turbo ???
Love everything about this build...except the fact that it has no AC, you need that even in the winter to defog your windows but hey to each their own. Keep it up LT can’t wait to see this thing haulin ass 😝
I'm with ya there, I wish it still had it in place
Did the same fan upgrade to my 01 Tahoe. Hard to find the parts but way better then aftermarket in my opinion. Sent out my ECU to a tunner to unlock the fan feature, so for I have had this upgrade for several months and no problems at all. In my case I can only use one of the leads to the computer and the other to a relay to change the positive polarity to a negative and run to a a/c wire.
yup! had a few people ask about that, should've done a better job explaining the differences in the early years for AC
I want to do that electric fan swap on my 06 1500HD. Thanks for the information on how to do it.
I did the fan conversion on my 06 Silverado 2500 .. great video LT !
Do any towing with it?
ST8KFINGER No. I really don’t tow a lot. I did it for ease of access and really like electric over mechanical.
Right on!
i was shitting bricks wondering why i had a red connector thing and this video came so clutch man , appreciate it LT
Congrats on hitting your subscriber goal of 30K!!
Thank you!!
Congratulations LT on your 30.3k subscribers
Thank you so much 😀
you made it! 30K congrats!
Yes! Thank you!
For the last week I have been trying to figure out why my new to me '03 2500 silverado AC has been not working at low speeds.. Turns out the previous owner did E-fan conversion. I'm assuming that they skipped out on the tuning because the fans only come on with engine temp, and not with the AC. Your video just gave me everything I need to know to go check that the pinning is correct and that I need to find a tuner to change that setting. Thanks for the help. Liked & subbed.
Hey, LT. Congrats on 30K Subs!
Hey, thanks! just made it
when ever you take that big block out to get built i hope you paint it chevy orange, just make it pop a bit more. its a great project!
Congrats on making it to 30k!
Thank you!!
Looking good buddy
Thanks 👍
Almost there!
Congratulations on the 30k.
Thank you so much 😀
That orange hose going to the overflow. 🤣🤣🤣🤠
I hope you get to 1 million subs. Miss watching you on power nation.
temporary hose until I build the bracket for the overflow, believe me. it sticks out like a sore thumb
@@LawrenceTolman just messin with ya.
I’m a fan for sure brother.
Congrats on the 30k subscribers
Thank you so much 😀
I really wish i would of found your vid earlier now i want to re do my wiring with oe wiring to have a stock look
nice work
Thanks
Oh hey, you're damn near 30k already, nice! Looking forward to this tuned up and driving. I don't much care about burn outs, but I'd love to see some dyno pulls and 1/4 mile times. Cheers man 🍻.
Of course we’ll do some of those as well
Personally, I would like to see the burnouts. Long smoky pro stock type burnouts... no line lock, no nothing.
@@MrScottt28 Hey bud we all like what we like, but a little baby Go-Cart can do some real serious burnouts too! If Black smoke is your thing, well, there are plenty of folks out there to tickle your pickle in this regard! Personally, I'm a numbers man!
@@LawrenceTolman what pin would you use to keep the ac going
@@LawrenceTolman PLEASE RESPOND. Do you by chance know the part number for the 9 blade efans, I know I can look but I've looked for an hour and can't find a promising answer
Cool thanks very usefull
Your 30K man congrats on that.
Appreciate it! I'm pumped!
If I knew a badass like LT I’d have all types of stuff done to my trucks 👍
Same
Congrats on the 30K LT
Thank you!
Oh buddy I'm pumped up for the dyno
me too! cant wait to see how it does
Great job Lawrence LT Tolman great channel 👍👍👍👍 that will be the same process for trailblazer ss??
By far the best video on the swap !!!!!!!!!!!! I have all the pieces to do the swap including the factory harness for my 01 with AC. Can you elaborate on the extra step needed for the AC to function properly with the new setup ???? Thanks
there are a few write ups online, but it involves triggering the second fan from the AC compressor clutch instead of the ECM, but that uses a positive signal instead of negative, so you use a relay to make the change and trigger the fan.
That install, is almost like cheating. I love it when things go that easy.
Easy, check this out th-cam.com/video/NVysqXm81aw/w-d-xo.html
Will definitely be doing this to my suburban soon, clutch fans are horrible.
Also electric water pumps are preffered.
Also my suburban almost never gets up to 190 unless its 90F+ outside
I did not realize they did an add on thing I assumed it was like in the fuse box and not really feasible to do and over $100 for the after market harness was way to much for me and my fans came with pig tails for the fans they had cut so I just had to get some relays and pins for the ECU and did it myself
Great video. . I have 2000 Silverado 1500. Pin 33 on red bank is already being used. Not sure what to do. I’ve found its for recirculation door control. Any ideas?
My 72 GMC I have an ls 6.0 installed with factory computer and factory fuse box. I used a 28 inch radiator because that’s what fit and a 97 to 02 f body fan that I made some adapter brackets to bolt to the radiator. The fan is controlled through the ecu, and the ac has a trinary switch that also grounds the fan relay. One question I have is what temperature should the fan come on related to the thermostat you have installed?
2001 Isuzu Trooper has the same ECU/ECM with the red and blue 80 pin connectors, and ECU/ECM, 4l30e automatic transmission, and numerous other parts are also made by GM.
You may want to check the part and serial numbers
Hopefully you do a DIYish fuel pump setup. I keep reading about people doing DIY dual 340 pumps in the stock basket, but have never seen any explanations on why certain steps are done.
thats the plan...
Hey, Great video!!, Thanks, I have an 02 silverado 4.8, I fixing to put stock daul fans from the 06 truck. The auto parts store recommend a 197 degree thermostat. But I think that is too high. So I put a 187 thermostat a good while back. Thinking about putting a 180 for the swap. Originally when it had a 197 I could feel the heat when I raise the hood. So if I go with a 180 thermostat what should I set my fans at for low and high? PS, I using a Dakota digital 2800bt module and a BP Automotive Harness instead of the ECM because they want over $200 dollars to flash it.
if you do a 180 thermostat, probably have the first fan come on at 185, off at180, then the second fan a little higher, on at 195, off at 190.
I’m about to do this to my truck tomorrow I hope I do it right lol
I put the same fan setup on my 1990 K2500 with a 34" radiator. Instead of junkyard stuff, I got a new one with a lifetime warranty from a national parts store chain. If I ever have any trouble, I should be able to get a free replacement from anywhere in the country.
That's if they have it in stock and don't have to wait a few days to get it lol.
Hey did you get the 34 radiator with oil cooler or with out
@@Maximus-hw4gz I have one truck with and I believe this particular one is without. This truck didn't have an engine oil cooler from the factory.
@@EricErnst oh okay thanks Eric what kinda radiator did you get
I’d love to know where to get that factory harness, I got one but it was cut up pretty bad
Love the video, fit and finish are exactly what I'm looking to do minus the ac functionality being lost gotta have that hear in Florida. What's the extra step you have seen to keep that operable. Was hopping you were going to give a little more info on that.
Yeah , mee too Chris ....have you found out anything on that ?
@bradhollinger2532 you need the ac update kit from BP automotive
Nice video bro I have a 2000 Chevy Silverado doing LS swap from a v6 to a v8 5.3 what year would I have to pull e fan and wire harness and I live in Texas so I need ac how that works I’m new to this pl help
Smoky Burnout ahoy!!
coming soon!
Any idea if this would work in a 97' k1500 if the radiator is 34?
What are the additional steps for 02 to turn them on when a/c compressor is engage at iddle and to let the computer know my a/c is on thanks,
Love the gm pcm connectors, made a gen2 Lt1 stand alone harness yesterday
very simple to work with
I just pulled everything I needed from my 05 truck (rotted frame).. I have an 03 now. Can I just swap the pcm along with it ?? Or should I get mine tuned?... same truck only difference is the 05 in Not fully loaded & my 03 is.
What OBD cable did you use to connect to the computer to reprogram the fans? I'm only finding the wireless hptuner obd2 connecter? I have a bmw the runs a obd2 to usb cable and wondering if that would suffice? TIA
What is the one additional step I need to do to keep my A/C on my 2002 Silverado? Installed radiator, fans, and 99-02 Nelson Harness but now my A/C is not working. Had my tuner get the fans going properly but still no A/C, the compressor will not kick on. Any help would be greatly appreciated
Trying to find the part number for the under hood fuse box cover with the extra opening for the fan relays? It would much appreciated.
What's the additional step to wire it with the AC
You said remove any wires already pinned to #42 and 33. What would be there already and will that disable something else?
I have a question before i remove the cable, what’s it for? and if there is no problem remplacing it?
What's the part#/year of the fuse box cover.. I can't seem to find one ..all I could find is stock ones without the relay hole...
Just pulled all the stuff to do this swap today. Was unaware he tuners was needed. I thought for all the world it was a plug and play deal. 😒
I have a 2005 suburban with fan and I have 2005 suburban with e fans do I still need a tune
What is the actual name of the pin connectors for the computer ? I have a factory harness but of course the wires from the harness connector to the computer are missing. So I have to make my own. Thanks.
So I got a 99 I did the wiring into the pins. But it isn’t working correctly what does the 99 need differently?
Did you have to upgrade your alternator?
I see 30K subscribers!!
just made it today!
What is the extra step for a/c trucks? Does it require a extra relay?
And great truck build.
yeah, basically a relay to convert the positive signal from the ac clutch to trigger the fans or something like that
That’s what I was wondering
@@LawrenceTolman Thank you and keep the videos coming great work.
Hey Lawrence hope all is well. I'm here in New Jersey and have just did the efan conversion now I think I am getting a reverse polarity but before I switch the wires I wanted to ask,; do the fans blow into the radiator or the engine compartment? which is correct
They suck air through the radiator and push it into the engine bay, the air moves the same direction it would when you drive
Nice! :-)
I pick one of those harnesses mine doesn’t have the ground cable
Quick question what extra steps do you need to follow for the ac to be fully functional with an 02 yukon
Theres an "AC retrofit kit" available that changes out the pressure switch with a sensor, and you wire that into the ECM so it knows what the high side pressure is, and kicks on the fan accordingly. If you find my newer electric fan video, I detail this during the install.
Is there gonna be some easy way to reconnect the AC pump? I can't go without AC. I have the elec fans in my 06 all ready. Looking at a 8.1 to drop in with turbo. Wanna see yours first. Lol.
its gonna be a challenge, but we'll see. i think if I redesigned the whole system to start with a scratch built manifold instead of using a stock manifold on the dr side, i might be able to do it
love all your videos!! just did this swap on my 04 sierra, but now when i hit the a/c switch the fans dont come on. any idea what may be causing that?
figured it out, enable temp and pressure for fan1 and fan2 were still maxed.
glad you got it sorted out!