ive looked for the past 3hrs trying to remedy my solution, but no avail.
i used a BP automotive wiring harness and new fans. everything is wired, pinned, bolted properly. they do use the 42 & 33 pins. both of mine were empty. and BP runs both fans in parallel hi/low.
i used the one drive stock files for a yukon to get my temps and pressures for the triggering. they seem really high to me... but idk.

im going to try and lower the trigger temps and see if that works.
i have a 180 t-stat and new all alum. 3 row radiator. it is all bled & burped.

any help is appreciated!