Small trick
One thing that learned when I picked up my fifth wheel. When you have your trailer hooked up and plugged in, retract the front gear until they are just clear of the ground, 1/4" or so. Jump in your truck and slide your brake controller lever all the over to apply the brakes fully then put your truck in drive and make sure the hitch is locked with the trailer. This way of it isn't, the trailer will only fall 1/4" or so and not as if the gear were fully retracted it will come down on your bed. This will save a major repair bill and something I was showed.
GMC 3500 HD LT Pewter<BR>Owens Running Boards,<BR> Line-X bedliner, <BR>K&N air Filter,<BR>Zaino Bros Car Care, <BR>GM Bed Cover,<BR>Vinca-Shield Protectant,<BR>Vent Shades