Pontiac 2005 Bonneville - Manual (Page 152)

Voltmeter Gage
When your engine is not running, but the ignition key is
turned to ON, this gage shows the state of the battery
charge in DC volts.
When the ignition is running, the gage shows the
condition of the charging system. Readings between the
shaded warning zones indicate the normal operating
range. Readings in the shaded warning zones indicate a
possible problem in the electrical system.
On vehicles with the systems monitor, the CHECK
GAGES light will also come on, and a warning chime
will sound if there is a problem in the electrical system.
Have your vehicle serviced immediately.
On vehicles with a DIC, a CHECK CHARGE SYSTEM
message will be displayed and a warning chime will
sound if there is a problem in the electrical system. Have
your vehicle serviced immediately. See DIC Warnings
and Messages on page 3-62 for more information.
V6 Engine V8 Engine
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