GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 421

Vehicles with the RPO VYU snow plow prep package
also have an emergency roof lamp provision package,
RPO TRW. Wiring for the emergency roof lamp is
provided above the overhead console. See
A vehicle specific Truck Camper Loading
information label is attached to the inside of your
vehicle's glove box. This label will tell you if your
vehicle can carry a slide-in camper, how much of
a load your vehicle can carry, and how to correctly
spread out the load. Also, it will help you match
the right slide-in camper to your vehicle.
for switch location.
When you carry a slide-in camper, the total cargo
load of your vehicle is the weight of the camper,
plus the following:
Everything else added to the camper after it
left the factory
Everything in the camper
All the people inside
The Cargo Weight Rating (CWR) is the maximum
weight of the load your vehicle can carry. It does
not include the weight of the people inside. But,
you can figure about 150 lbs (68 kg) for each seat.
The total cargo load must not be more than your
vehicle's CWR.
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