Hello everyone,
I have searched through the forums and have not found a clear answer. I have a 2001 Suburban and my electric fans come on low as soon as the truck starts and will not trigger to high based on temp or A/C. I know the A/C will not due to the year and having a pressure switch rather than sensor which there are different ways to get that to work so that?s a non issue for me at the moment.
But after doing a lot of digging I realized my OS is 12208322. I am not 100% sure, but I believe this is my issue. Has anyone successfully ran electric fans with this OS? Or have you had to upgrade or downgrade your OS? Does HPT having a custom OS that works that will allow me to keep my VIN?
I have OE fans and OE 3 relay fan harness from an 05 truck.
I have also tested the relays using a Tech2 and can turn the fans on low or high, as well as a single fan on high depending on what combination of the 3 relays i trigger, so i believe the harness is correct and functioning as it should.
Any help would be extremely greatly appreciated!!