I tow my Jayco hybrid with a 2012 Chevy Silverado with the 4.8 V8 and 3.23 gears. It does just fine in Florida where it's flat. The owners manual says I can gain 2000 lbs. towing capacity changing to ...
I have the same model tv and I changed to 3.73 and it made a huge difference towing hard to tell trailer is back there without looking in mirror. The gear change also increased my gas mileage.