GVWR's

ok....more specifically...have 2004 sierra 1500/5.3L/3.73 diff.....gvwr is 6200 per door panel....total weight of truck w/full gas/me in it leaves 1010 pounds of payload, large portion of which would be consumed by the tongue weight of TT....have been told that the payload for my year/size(1500 vs 2500) is unusually low...sooooooo, trying to find other vehicles with GVWR rated higher....have to consider buying other truck