The hitch can't be upgraded, and the issue is a 400 pound hitch weight limit unless you have a WD hitch. I have a 3500 pound trailer, and use a WD hitch and love it. Run a search and you'll discover a recent discussion about brands and styles of WD hitches.
I believe it's 400 TW and 4000 HW w/o WD Hitch. Add the WD hitch and it becomes 720 TW and 7200 HW(this is off the top of my head). Keep in mind that this hitch is applied to all TB's/Envoys & of course Rainiers and is not the recommended weight maximum for your specific vehicle. Your owners manual has the proper limits for your own vehicle.
Sorry if this is a repeat, new here. I tow an 8500# trailer with a Silverado with V8, towing package, W/D hitch for occasional use - twice a year. Want to downsize the tow vehicle, thinking about 2010 TB with V8, 3.42 gears and same hitch and trans cooler. I realize the wheelbase will affect the handling somewhat, but for occasional use, will the TB do it comfortably?
I do use a weight distributing hitch rated at TW 1,000 and GTW (Gross Trailer wt?) of 10,000# and a good brake controller. I could use a 3.73 rear to increase towing capacity, but I do see your point about potentially exceeding the capacity of the vehicle. If I chose the 2009 TB with factory towing package, what do you think that maximum would be? What does the TB weigh? As I mentioned, my trailer is 8500#.
Thanks for your input, just what I needed from someone who’s been there. Maybe I’m looking at a Tahoe?
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