GMC 2009 Sierra - Manual (Page 298)

Add-On Equipment
When you carry removable items, you may need to put
a limit on how many people you carry inside your
vehicle. Be sure to weigh your vehicle before you buy
and install the new equipment.
Notice: Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.
Remember not to exceed the Gross Axle Weight
Rating (GAWR) of the front or rear axle.
*Equipment Maximum Weight
Ladder Rack
and Cargo
750 lbs (340 kg)
Cross Toolbox
and Cargo
400 lbs (181 kg)
Side Boxes
and Cargo
250 lbs per side
(113 kg per side)
*The combined weight for all rail-mounted
equipment should not exceed 1,000 lbs (454 kg).
A reinforcement kit for rail-mounted add-on
equipment is recommended. See your GM dealer.
Truck-Camper Loading Information
Your vehicle was neither designed nor intended
to carry a slide-in type camper.
Notice : Adding a slide-in camper or similar
equipment to your vehicle can damage it, and
the repairs would not be covered by your
warranty. Do not install a slide-in camper or
similar equipment on your vehicle.
Pickup Conversion to Chassis Cab
We are aware that some vehicle owners might consider
having the pickup box removed and a commercial or
recreational body installed. Owners should be aware
that, as manufactured, there are differences between a
chassis cab and a pickup with the box removed
which could affect vehicle safety. The components
necessary to adapt a pickup to permit its safe use with
a specialized body should be installed by the body
builder.
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