Your traditional class 3 hitch which is very common as standard equipment is labeled to bear 500 lbs of tongue weight/5000 lbs of trailer weight without a WD hitch. It is also labeled to bear 1000 lbs of tongue weight/10,000 lbs of trailer weight with a WD hitch. Some of the newer GM class 3 hitches move up the non WD hitch rating to 750/7500 but I am confident that anyone that has used a WD hitch will prefer to use one even if the hitch is loaded lightly enough to be used without a WD hitch. If your GM hitch is the type that has bolts attaching it to the bumper-REPLACE IT with a standard box type receiver mounted to the frame as there have been many documented failures of this poor hitch design. GM screwed up on this one, I'll admit it even though I own nothing but GM trucks and SUVs.
Highbeam,I have a 2006 1500 Chevy and the manual says it's rated to tow 7700 lbs. It has the towing option but maybe you could tell me if it has the correct hitch for that load.It is bolted through the bottom of the bumper with bolts but is also bolted to the frame rails with 3 bolts on each side.It doesen't look as heavy as the old Reese hitches im used to but it is attached in 8 places.The sticker next to the trailer plug says 5000#s and under that 12000#s with WD setup.Just bought the truck ,100 miles ago and I tow a 7000# package. Haven't towed anything yet.The dealer says 7500#s ok but I'm not sure at all about this.I guess my question really is...can I hook to this setup and pull my tractor safely.So 5k, 7.5k ,12k??? Sorry can't work the quote button.