GMC Sierra 2014 Owner's Manual page 284

9-20 Driving and Operating
Warning (Continued)
When you carry something
inside the vehicle, secure
it whenever you can.
Do not leave a seat folded
down unless you need to.
There is also important loading
information for off-road driving in
this manual. See Loading the
Vehicle for Off-Road Driving
under Off-Road Driving on
page 9-6.
Two-Tiered Loading
Depending on the model of the
pickup, an upper load platform
can be created by positioning
three or four 5 cm (2 in) by
15 cm (6 in) wooden planks
across the width of the pickup
box. The planks must be
inserted in the pickup box
depressions.
When using this upper load
platform, be sure the load is
securely tied down to prevent it
from shifting. The load's center
of gravity should be positioned
in a zone over the rear axle.
The zone is located in the area
between the front of each wheel
well and the rear of each wheel
well. The center of gravity height
must not extend above the top
of the pickup box flareboard.
Any load that extends beyond
the vehicle's taillamp area must
be properly marked according to
local laws and regulations.
Remember not to exceed the
Gross Axle Weight
Rating (GAWR) of the front or
rear axle.
Add-On Equipment
When carrying removable items,
a limit on how many people
carried inside the vehicle may
be necessary. Be sure to weigh
the vehicle before buying and
installing the new equipment.
Caution
Overloading the vehicle may
cause damage. Repairs would
not be covered by the vehicle
warranty. Do not overload the
vehicle.
Remember not to exceed
the Gross Axle Weight
Rating (GAWR) of the front or
rear axle.