Pontiac G6 2010 Owner's Manual page 146

The windows and trunk lid will open. The hardtop will
automatically lower, and the trunk lid will close and latch.
If the engine is on, a chime will sound when the
hardtop has lowered completely. The Driver Information
Center (DIC) will display TOP MOVE COMPLT. See
DIC Warnings and Messages on page 4-42 for
more information.
3-40
After the hardtop has lowered completely, release the
switch. If you continue to press the switch for about
two seconds after the hardtop has completely lowered,
the windows will automatically close.
If pressure is released from the switch before the
hardtop cycle is complete, the cycle will stop and the
Driver Information Center (DIC) will display the
TOP NOT SECURE message. Always press and hold
the switch until a chime sounds, if the engine is on, and
the Driver Information Center (DIC) displays the TOP
MOVE COMPLT to signal the procedure is complete.
See DIC Warnings and Messages on page 4-42
for more information.
When the retractable hardtop is down and stowed in the
trunk, the trunk open function will be disabled. When
the ignition is on, the TRUNK NOT ALLOW message will
be displayed on the DIC when attempting to open the
trunk with the retractable hardtop stowed inside.
See DIC Warnings and Messages on page 4-42 for
more information.