Buick 2007 Rendezvous - Manual (Page 161)

Roof Rack System
{ CAUTION:
If you try to carry something on top of
your vehicle that is longer or wider than
the luggage carrier — like paneling,
plywood, a mattress and so forth — the
wind can catch it as you drive along. This
can cause you to lose control. What you
are carrying could be violently torn off,
and this could cause you or other drivers
to have a collision, and of course damage
your vehicle. You may be able to carry
something like this inside. But, never
carry something longer or wider than the
luggage carrier on top of your vehicle.
If you have the luggage carrier with crossrails you
can load things on top of your vehicle. If you
do load things on the top of your vehicle, you must
load them on the luggage carrier crossrails.
Some vehicles may not have the crossrails.
Notice: Damage may be caused to the roof of
your vehicle if anything is placed directly
on the roof.
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