Cadillac 2004 Seville Owner's Manual page 109

Press and hold the ROOF switch rearward to the first
position to open the glass panel and sunshade.
The sunshade also can be opened or closed manually.
To close the glass panel, press and hold the ROOF
switch forward. As the sunroof reaches the closed
position, it will open slightly toward the vent position and
then drop down to the closed position to provide a
better seal.
Press and release the ROOF switch rearward to the
second position to express-open the glass panel to the
comfort stop position, approximately half-way open.
The comfort stop position is designed to help reduce
noise and make the rear seat passengers more
comfortable.
The glass panel may then be fully opened by pressing
the ROOF switch again.
If you press and hold the ROOF switch in the
express-open position for more than one second, the
express-open operation will be over-ridden and the
sunroof will stop when the switch is released.
To stop the glass panel when express opening, press
the ROOF or VENT switch forward or rearward and
release.
To vent the glass panel, press and hold the VENT
switch in the open position. The sunshade must
be opened manually when using the vent position. To
close the glass panel, press and hold the VENT
switch in the close position.
The ROOF and VENT switches work only when the
ignition is on or when RAP is active. See "Retained
Accessory Power (RAP)" under Ignition Positions
on page 2-25.
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