Chevrolet 2010 HHR Owner's Manual page 165

To express open the power sunroof,
fully press the driver's side switch rearward once. To
stop the sunroof glass in a desired position other than
to the express-open position, press the switch again, in
either direction, to stop the movement. If the sunshade
is in the closed position, it will open with the sunroof,
or it can be opened manually.
To open to the vent position from the
closed position, press and hold the passenger's side
sunroof switch forward. The rear of the sunroof panel
will tilt upward to the full vent position. The sunshade
must be opened manually.
To express close the power sunroof,
fully press the driver's side switch forward once. To stop
the sunroof glass in a desired position other than
closed, press the switch again in either direction. The
sunshade must be closed manually.
To close the power sunroof, operate the controls
according to one of the following:
From the open position, press and hold the driver's
side sunroof switch forward. The sunshade must
be closed manually.
From the vent position, press and hold the
passenger's side sunroof switch rearward.
If an object is in the path of the sunroof
while it is closing, the anti-pinch feature will detect the
object and stop the sunroof from closing at the point of
the obstruction. The sunroof will then return to the
full-open or vent position. To close the sunroof once it
has re-opened, refer to the two options previously
described under the Close feature instructions.
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