Originally Posted by
Tfoggy
YUP, that's what I ended up doing as my 14 yukon denali had NO settings for MPH/Speed in correlation to fans
I went into the "override parameters" to set my fans to come on at about 218 ish.
I just haven't towed in hot enough weather yet to test if they actually are commanded and do come on as intended by me.
My trans temps were horrible while towing heavy in the 50-65mph range with no way to cool down when ect would go up to 220+.
I did add a separate trans cooler with a fan (mounted underneath and got rid of the external trans cooler in front of the radiator).
Now I can turn on my trans cooler fan anytime I want independently - stop & go traffic, towing, idling a lot while hooking up, whatever