Voltmeter Gauge - GMC 2012 Sierra Series Owner's Manual

5-18 Instruments and Controls
It also provides an indicator of how
hard the vehicle is working. During a
majority of the operation, the gauge
reads 100°C (210°F) or less.
If pulling a load or going up hills, it
is normal for the temperature to
fluctuate and go over the 113°C
(235°F) mark. If the gauge reaches
the 125°C (260°F) mark, it indicates
that the cooling system is working
beyond its capacity.
See Engine Overheating on
page 10 23.
If the vehicle is a hybrid, see the
hybrid supplement for more
information.

Voltmeter Gauge

This gauge indicates the battery
voltage when the ignition is
turned on.
I n f o r ma t i o n P r o v i d e d b y :
When the ignition is on, this gauge
indicates the battery voltage.
When the engine is running, this
gauge shows the condition of the
charging system. The gauge can
transition from a higher to lower or a
lower to higher reading. This is
normal. If the vehicle is operating
outside the normal operating range,
the charging system light comes on.
See Charging System Light on
page 5 24 for more information. The
voltmeter gauge may also read
lower when in fuel economy mode.
This is normal.