Hummer 2009 H3 Owner's Manual page 104

2-38 Features and Controls
The following illustration shows the
field of view that the camera
provides.
H3 Field of View
Notice: The spare tire extends
farther away from rear of the
vehicle than the trailer hitch
shown on rear vision camera
display. The spare tire could hit
an object even though there
appears to be enough distance
on the display between the trailer
hitch and objects behind you
causing vehicle or property
damage. Do not use this system
to judge the distance between
the spare tire and objects
behind you.
H3T Field of View