Set up e fans with a custom relay harness on on a 99 silverado.
Used pin blue 42 and red 33 (green wire).
I dont have his specific tune on my phone to upload currently but what should the pcm settings be?
I used the setting i found online here but it seems like both fans will run at the same time and i dont believe they run on high speed just low.
Also i heard the early trucks had some issue runnig e fans. Any input is appreciated.