Tonyrodz
Resident Resident
YesDo you need a tuner to activate on a 03+?
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
YesDo you need a tuner to activate on a 03+?
I'd answer if I knew, but I don't know anything about a tech2. Sorry.Why is it that whenever this question is asked ANYWHERE on this forum all that follows are crickets!!
Post#5 will help you sleep better..now go find a tuner to turn on the fans..Why is it that whenever this question is asked ANYWHERE on this forum all that follows are crickets!!
Thank you! I am sending you a christmas card this year for the help. This info should be a sticky!Post#5 will help you sleep better..now go find a tuner to turn on the fans..
https://www.performancetrucks.net/f...cs-wiring-161/activating-e-fans-tech2-419095/
Sent from my SAMSUNG-SM-T377A using Tapatalk
Yeah seems like tech2 is only good for diagnostic purposes.So in nutshell, no they can NOT be turned on with a Tech-2.
Yeah seems like tech2 is only good for diagnostic purposes.
Sent from my SAMSUNG-SM-T377A using Tapatalk
As of now, I am sold out. I will update this thread again when I have another one (or three or four) for sale.

@ScottyBoy is def the man.Finally getting around to posting some props for Scotty.
He is a great communicator and the harness is in outstanding condition (see for yourself, it looks basically new AND he labeled it!). If you are on the fence about buying this harness from him, jump off and do it. You won’t be sorry.
Thanks Scotty!
![]()
![]()

Interested. How do I acquire?I have a mint 2006 OEM electric fan harness for sale. This is used to add 05+ electric fans to any NBS truck. The harness has been thoroughly cleaned and re-wrapped in brand new wire loom, I also pack the fan plugs in Dielectric silicone grease for more water proofing to protect the contacts. I pull these harnesses from the donor truck in the junkyard and methodically pick it apart from the core support harness to make it a completely standalone fan harness. Then I COMPLETELY clean and scrub the entire harness and relay block and repair any Nick's or damaged areas in the wiring. All you need to do is hook up the power wire, ground wire, and the two PCM trigger wires. A custom tune is needed in order for the PCM to be able to control the Efans. I have sold several of these harnesses to forum members on here and several other forms, so they can vouch for the quality of the harnesses that I sell. The OEM harnesses install much cleaner than an aftermarket harness, and they seem to be more reliable as well since many people have reported aftermarket harnesses burning or melting. These harnesses are completely plug and play for any 03-06 NBS truck, although these came stock on the 05-06 trucks. On 99-02 trucks, an extra relay needs to be added in order to be able to connect to the AC compressor trigger wire since there is no pressure switch that that the computer can control on the 02 and earlier trucks. So you have to splice into the positive compressor trigger wire, this is why the extra relay is needed so you can use this positive wire to trigger the fans when the AC is on. I can splice this extra relay into the harness for you for an additional $10 if you have a 02 or older, then this harness will be just two trigger wires to connect just like on a 03-04 truck. I currently have two of these for sale, and I'm Asking $100 shipped in the lower 48 for the harness. Located in Shreveport, Louisiana and local pickup is more than welcome. The first picture shows how the harness looks when I am done with it. The second and third pictures show the harness with an extra relay added in order to interface with the AC compressor on a 00-02.
View attachment 186101 View attachment 186102 View attachment 186103
Just ask.Interested. How do I acquire?
I’m a noob here. Bare with me. I need one ASAP. Lol so yes I’m asking for a harness pleaseJust ask.
Is this still available? Need ASAPBUMP.
I have one more of these harnesses for sale.
$100 shipped for 03-04 or $110 shipped if you need me to modify it to work on a 00-02.
Is this still available? Need ASAP