Pontiac 2005 Grand Prix Owner's Manual page 187

PARKING BRAKE ON
This warning message appears to alert the driver
when the vehicle's parking brake is on, the ignition
is in RUN, and the vehicle speed is greater than
5 mph (8 km/h). See Parking Brake on page 2-30 for
more information.
The brake light will also appear on the instrument panel
cluster when this message appears on the DIC.
A chime will sound continuously while this message
is displayed if driving above 5 mph (8 km/h). Press the
set/reset button to acknowledge this message and
to clear it from the screen.
This symbol comes on with
the PARKING BRAKE ON
warning message.
This message will continue to display for three seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for three seconds if the
message has been acknowledged, but the condition
still exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
PARK LAMPS ON
This warning message will come on to alert the driver
when the parking lamps are on, the ignition is in
OFF, and the key is removed. A chime will sound
continuously while this message is displayed. This
message cannot be acknowledged.
READING LAMP ON
This warning message will come on to alert the driver
that the reading lamps are on and the ignition is in OFF.
A chime will sound for two seconds while this message
is displayed. This message cannot be acknowledged.
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