You would have a very unusual truck.
As u probably know, that actuator assembly is used in the chey/gm trucks (4x4). And, the actuator is engaged in any of the 4wd selections, including the AWD selection in the 4x4 trucks.
To the best of my knowledge, your truck is in 2wd most of the time (under normal conditions, no parts broken). There is somewhere around 5% of the power going to the front, but that is all.
We use the actuator to release the the front driveshaft when in 2wd or transfer case neutral.
I don't know what your plan would buy for you, but, as you are reducing the rolling resistance, it will save u 1 or 2 mpg
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