Incline

Alan

is a 6% grade a really steep one? It appears on some travel assst apps.

RollingBnB

If your TV is marginal, yes it will be an effort to go up or down at speed

Cyclonic

6% is pretty steep.  It equates to a rise of 6 feet for every 100 feet of road.  Could be a challenge for smaller TV's.

rkj__

For reference, here is a listing of the maximum grades of Colorado mountain passes.  Most on the list are 6-7%.

https://www.codot.gov/travel/maximum-grades-on-colorado-mountain-passes.html

So yeah, I'd say 6% is pretty steep.