Ok,I will bite...what does the thermostat change have to do with the fan programs? The stat opens at a predetermined temp,usually full warm up,then the ECM shuts off the choke program(rich). So,if the stat opens at 170,and this is "closed loop",then the truck should not need the fans until the temp runs up to whatever temp the ECM has the fans programed for(200?). No heat,no fans. A seperate device from the mechanical stat.
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Had-94,96,98,99 Cobra Stang,99 Navigator,03 Expy, 05 H2
Have-08 Titan C/C,06 GCSRT-425FTLB & AWD, other junk..
Want-08 Viper, 06 M5 
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