Hummer 2006 H2 - Manual (Page 160)

Area Displayed On Screen
The image is provided by the camera located on the
rear bumper.
The camera uses a special lens. The distance of the
image that appears on the screen differs from the actual
distance. The area displayed by the camera is limited.
The camera does not display objects which are close to
either corner of the bumper or under the bumper. The
area displayed on the screen may vary according
to vehicle orientation or road conditions.
The following illustration shows the field of view that the
camera provides.
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