Wow they sure have downgraded the Tahoe towing capabilities. My 1999 had a max tow rating of 7200 lbs and easily towed my 210WBS.
At any rate I would think you should be OK. The 160 has a listed dry weight of 2200 lbs and a listed hitch weight of 225 lbs. So on the surface anyway you have ample capacity for the extra lbs for batteries, propane, water, passengers and gear and still be well within your 5500 lbs tow rating, and won't come close to exceeding the 825 lb hitch weight capacity. Hopefully, XFE means you have a trailering package that includes the heavy duty alternator, and extra cooling capacity. If so I think you'll be fine.
2011 Chevy Silverado Crew Cab 4X4
2009 210 WBS