Voltmeter Gauge - GMC Silverado 2022 Manual

Chevrolet/GMC Silverado/Sierra/Sierra Denali 2500 HD/3500 HD Owner
Manual (GMNA-Localizing-MidEast-16504136) - 2023 - CRC - 6/8/22
118 Instruments and Controls
Under some driving conditions, including
those listed below, it is normal for the
temperature to rise above the usual
operating range and approach the far end of
the gauge:
Stop and go driving in heavy traffic.
High speed operation in warm weather.
Uphill driving.
Trailer towing or hauling a heavy load.
It is normal for the reading to fluctuate.
If the gauge pointer reaches the warning
area or the shaded thermostat symbol at
the far end of the gauge and remains there
for more than 30 seconds, the engine
coolant has overheated.
If the engine coolant has overheated, pull
over and idle the engine as soon as it is
safe to do so.
See Engine Overheating 0 295.

Voltmeter Gauge

Chevrolet Uplevel Gauge Shown, Midlevel
and Base Level Similar
GMC Uplevel Gauge Shown, Midlevel and
Base Level Similar
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 0 121. The voltmeter gauge may also
read lower when in fuel economy mode.
This is normal.