"POPUP5" wrote in message
...
Contact the body manufacturer/installer if they are still in business. The
body's manufacturer not GMC, certifies the truck's gvw.GMC is an
incomplete
vechile manufacutuer in this case as all they supplied was a cab and
chassis.
When the body is mounted on the truck a sticker is put on the door jamb
usally,
with axle and gross weight ratings for a certain size and ply of tire.
This
sticker is now the weight ratings for the truck. Recertification is
normally
done by a body builder/installer.
Think about this a little,GMC has no way of knowing what the truck will
look
like or weigh in its final form when all they supply is a cab and chassis.

David Steger

Or possibly GMC doesn't care what the final product will be. They do know
how THEY built the truck and likely put the ratings on the door jamb for the
equipment that was installed by GMC. Even though it is essentially a
useless vehicle when it leaves the factory, it still has a GVWR. It is then
the responsibility of the body builder to update these numbers for the
modifications they do.

Shawn