I got trapped on a sidewalk a while back, still the first few months of riding for me, and at the end was a small (3 or 4 steps) shallow flight of stairs. At first, I was freaked out. Then I said to myself "you have a GS. It's supposed to handle this shit. Besides, what else are you going to do - call someone? Ride the stupid steps, girl!"
I throttled up a bit and just rode down them. It was a really really big non-event.