Just took delivery of a 2015 GMC Sierra with Navigation system. In the settings for Routing there is something called ECO profile routing. It has a roof load and a trailer load. Settings are none, small, medium and large. Then select ECO friendly route.
If I set this to large will it be like the Rhand McNally 7710 where it will keep you on routes that you don't have to worry about narrow roads, low bridges etc.
The tech guy at dealer did not know.
Does any one have experience with these.
Dan & Patty
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