NISSAN TITAN 2010 - Manual (Page 371)

WARNING
Do not install accessories over the gap
between the front and rear side channels.
Doing this could affect the rear structure
in certain rear impacts, which could result
in serious injury.
CAUTION
Properly secure all cargo with ropes or
straps to prevent it from sliding or shifting.
Use the channel end stoppers to help se-
cure items in the channels from sliding off
the end of the truck bed.
Channel end stoppers
The channel end stoppers should be used to help
prevent accessories installed in the channels
from sliding or shifting off the end of the truck
bed.
They must be installed so they are properly
seated in the detents in the channel.
1 correct installation, 2 incorrect installation
LTI0123 WTI0119
Technical and consumer information 9-21