U-Rail
For vehicles with a u-rail system, the fence can be moved to different positions on the u-rail track to secure cargo.
Push both adapter buttons to move the adapters (B) on the straight part of the u-rail.
To move the fence around the u-rail, disconnect one side:
1. Unlock by turning the latch (A) to align 
with the arrow on the" width=18 height=20
id="_x0000_i1278" src="images/books/1183/1/index.41.gif" border=0>with the arrow on the
adapter (B).
2. Push the adapter button to move the adapters (B) to the desired position.
3. Reinstall the fence and lock both latches (A) by turning to align 
with
the arrow on the adapter (B).
Use the fence to secure items in place.
See also:
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Cellular and GPS Antennas
Avoid placing items over or near
the antenna to prevent blocking
cellular and GPS signal reception.
Cellular reception is required for
OnStar to send remote signals to
the vehicle. ...