Hummer 2009 H2 - Manual (Page 155)

Anti-Pinch Protection Feature
If something gets caught between the glass panel
and roof frame while the sunroof is closing, the glass
panel will stop and open half way, and the deflector
will raise fully.
If something gets caught between the glass panel
and the roof frame during the tilt down operation,
the glass panel will stop and open fully.
If the sunroof panel receives a strong impact, the
anti-pinch protection feature may work even if nothing
gets caught between the glass panel and roof frame.
Sunshade Operation
The sunshade will open automatically when opening the
sunroof.
However, it can manually be pulled shut after the
sunroof is closed. To adjust the sunshade, push it
backward or pull it forward to the desired position.
The sunshade cannot be adjusted further than
the current closed position of the sunroof.
Notice: If you force the sunshade forward of the
sliding glass panel, damage will occur and the
sunroof may not open or close properly. Always
close the glass panel before closing the sunshade.
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