Most OEM brochure and published specifications are derived from a curb
TV...meaning a stripper model...even though a stripper might not be
offered for sale
So best to weigh your TV fully loaded as if going to tow. Then do the
simple math subtracting the actual weight from the GCWR.
GCWR can be figured close (ball park) by taking the curb and adding
the brochure MTWR (Max Tow Weight Rating)
Then the generic formula is: GCWR >= actual TV + actual trailer + stuff
like WD hitch, cargo, people, pets, ice chest, luggage, etc, etc
This is for a 2001/2002 era (GMT800...yours is GMT400), but it shows
how diff ratio's affect MTWR
If the TV's receiver is still OEM, suggest replacing with a traditional
designed receiver. The better ones range from $150.00 on sale to
a bit over $200. Plus about an hour to remove the POS old and install
the new, traditional design receiver
A POS and below is/was a common issue that was supposedly fixed, but
have found other complaining about it on their 1999...
Not just poor welding, but the basic design is awful and why say replace
with a traditional designed receiver