Pontiac 2005 Bonneville Owner's Manual page 344

To reset (calibrate) the system with a Driver Information
Center (DIC):
1. Turn the ignition switch to ON.
2. Using the MODE and SELECT buttons, change the
DIC to display TIRE PRESSURE.
3. Press and hold the RESET button for about
five seconds.
4. The display should change to read TIRE
PRESSURE RESET. If TIRE PRESSURE
RESET does not appear on the display after about
five seconds, see your dealer for service.
5. When you release the button after seeing the TIRE
PRESSURE RESET message, the display will
change to read TIRE PRESSURE NORMAL.
5-84
To reset (calibrate) the system with a systems monitor:
1. Turn the ignition switch to ON.
2. Press and hold the TIRE PRESS RESET button for
about five seconds.
3. The TIRE PRESS light on the systems monitor
should begin to flash. If the TIRE PRESS light
does not begin to flash after about five seconds,
see your dealer for service.
4. Release the TIRE PRESS RESET button and the
system should reset. The TIRE PRESS light will
go out.
The system completes the calibration process during
driving. Calibration time can take 45 to 90 minutes,
depending on your driving habits. After the system has
been calibrated, the system will alert the driver that
a tire is low, up to a maximum speed of 65 mph
(105 km/h).