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first couple times I towed my trailer, I had it set for the temps.
then remembered its not a chebby, so I don't have to worry about a cooking engine or tranny.
Now I just leave it on the current mileage / DTE screen
I keep mine on the instant mileage bar graph (basic info center) for the sole purpose of knowing when it's in regen if I miss the message and I miss the message most of the time.
The only other half way useful screen is the average MPG but don't stay there so I don't accidently press the reset button in the middle of a tank of fuel.
If I was smart and had the LCD, I would keep it on the temp screen.