It was a gross oversite on my part. I overestimated the SAT coverage provided by the truck. Reviewing the trip ND, SD, and MT were the problematic areas. There were at least two time I had to use paper maps because dirt roads were closed and the local municipalities had not set up detours.....we were very very lucky.
When you say SAT coverage are you talking about the trucks stock navigation system? If so, your not out of SAT (GPS) range, the trucks system just isn’t meant for that. Get yourself a Garmin inreach to use as a GPS beacon and download a mapping app like Gaia to your tablet. Simple setup like this will give you navigation ability plus texting (and SOS) ability through GPS. I can pretty much guarantee you didn’t travel to anywhere with no “SAT” coverage.
P.s. if your traveling off-road you probably shouldn’t expect local municipalities to create detours for closed roads. This ain’t the city…