I use TomTom on my phone, it is a yearly subscription. On their website I setup my configuration , truck and camper details such as total length, width, and heighth. I pan the route on my computer on their website. It takes account of my dimensions and plans route around that information. I can adjust the route as I want. If I need to do a fuel stop on a trip I will figure out the distance I want to drive and pick a place where I can get fuel and eat. I use Google Maps in satellite to study the possible gas/food stop to make sure access to pumps is easy and parking that will accomondate me. Once I am happy with my route I save it and it synchs to my phone.
I had used a TomTom for years and didn't know it had the routing capabilities for my configuration until AFTER we did a trip to the Smokey Mountains and were take on roads we had no business on. When we got home I discovered the routing options and played around with it and it avoided the roads that I should not have been on.
Freebie GPS navigation does not provide the options to tell it what you are driving/pulling. They are designed for a car.