If it's missing I would suspect body work at some point. Undisclosed body work?
Dealer wouldn't be able to help, I have never heard of that being replaced as it's made by the factory when the vehicle is being built... with the
vin number. Certain things are just not replaceable.
They probably should have been able to give you that information based on the
vin... those numbers are calculated based on options, tow package, a/c, power
windows and so on... tow
weight is reduced with more options added. They are not a "one size fits all" type deal.
I run away from vehicles with that missing, no matter what price they are being
sold for... that and the sticker under the hood with the engine size, emissions etc...
Ran away from a very nicely priced 3/4 ton truck as that sticker and the
vin on the dash didn't match