Pontiac G6 2009 Owner's Manual page 127

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CAUTION:
If the retractable hardtop is not completely opened
or closed, the system will cause the retractable
hardtop to slowly descend after 3 minutes. You or
others could be injured. The retractable hardtop
will descend immediately if the ignition is turned to
LOCK/OFF during the opening or closing of the
retractable hardtop. Always completely open or
close the retractable hardtop and do not shut off
the ignition during the opening or closing of the
retractable hardtop.
4. The hardtop switch is located on the headliner.
To raise the hardtop, pull and hold the switch until the
cycle is complete.
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