Remove all the sound insulations , Both sides, Remove the CP4 pump cover place the 4 bolts back in threaded holes, I also keep the plastic engine cover off during summer months.
Do you have Banks IQ or CTS ? If you don't unplugging the EGR actuator gate,it blocks 20/40% of the hot exhaust gases form entering the EGR coolant chamber, the Downside is occasional P245B code, this is a two trip code even if it appears it will NOT effect power or operation, but you will a device to clear the code.
WOW if your Coolant is 244F your oil is ? If you not running T-6 change over ASAP.
What we need to find away to just reach 220F to trick the system into thinking the coolant is warm (W/O triggering a code) to engage the fan like this diagram for older Rams.
We need to figure out correct Ohms ,the wiring is easy. that way you can flip the in cab switch before the climb cooling the system in advance, You can toggle the switch to see your actual Temps.
I know this even if the trans fluid and oil run 50F cooler then 220F no code will be triggered, that would be some indictor of actual coolant temps, BC once you flip the switch its going to stay right at the set ohms. 220+- whatever ohm out.