Originally Posted by C5c5
I need to get good advice on navigating steep hills with a big RV in general because I am only used to flat stretches
Don't keep your travels to interstates. You don't see anything that way.
The majority of secondary roads are just fine with big rigs. You don't go as fast but you see more. The city and county parks in small towns are great.
Going down a hill.... get into low gear before you even begin heading down; not in the midst of the hill when you pick up speed. You'll save the brakes this way.
Don't avoid hills. You'll feel a lot more comfortable and will have more options if you get off those interstates.
If you're going to travel in mountainous areas you might want to get the 'Mountain Directory for Truckers and RVers'. We used it all the time for a head up of what's to come. Even though a road is mentioned in the directory that doesn't mean you can't drive it. It's just a guide.
Even on some parts of interstates the grades can be 6% and 7% on I-70. You'll find the same on secondary highways for comparison. If you read of a highway with 4-6% it would be easily doable with a big RV.