Pontiac 2003 Bonneville Owner's Manual page 174

Battery Volts: On vehicles with a supercharged
engine, press the SELECT button until the display
shows BATTERY VOLTS. If the voltage is normal the
display will show BATTERY ## VOLTS. If the voltage
drops below 10.5 volts for 30 seconds, the battery volts
display will show BATTERY LOW. If the voltage is
above 16.2 volts for 30 seconds, the battery volts display
will show BATTERY HIGH. If the display shows the
high or low message, you need to have your batterv
and/or electrical system checked.
GM Oil Life SystemTM: Press the SELECT button until
OIL LIFE appears in the display. The OIL LIFE
NORMAL display will show an estimate of the oil's
remaining useful life. When the oil life index is less than
IO%, an ENGINE 0 i L CHANGE SOON message wiii
be displayed and the oil life display will show OIL LIFE
CHANGE. When you have the oil changed according
to the maintenance schedule, you will have to reset the
Oil Life System. To reset the Oil Life System, see
"When to Change Engine Oil" under Engine Oil on
page 5- 15.
Tire Pressure Status: Press the SELECT button until
TIRE PRESSURE appears in the display. TIRE
PRESSURE NORMAL is displayed when the Check
Tire Pressure System believes your vehicle's tire
pressures are normal. If a potential problem is detected,
the display will show CHECK TIRE PRESSURE and
the tire pressure status will show TIRE PRESSURE
LOW. If you see the CHECK TIRE PRESSURE
message, you should stop as soon as you can and
check all your tires for damage. (If a tire is flat, see If a
Tire Goes Flat on page 5-72.) Also check the tire
pressure in all four tires as soon as you can. See
lnflation
--
Tire Pressure on page 5-62 and Check Tire
Pressure System on page 5-64.
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