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GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-MidEast-
15170043) - 2022 - CRC - 5/25/21
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 stop the vehicle as soon as it is
safe to do so. Then, turn the engine off
immediately.
See Engine Overheating 0 269.
Voltmeter Gauge (Uplevel only)
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 0 105.
Readings outside the normal operating
range can also occur when a large number
of electrical accessories are operating in the
vehicle and the engine is left idling for an
extended period. This condition is normal
Instruments and Controls
since the charging system is not able to
provide full power at engine idle. As engine
speeds are increased, this condition should
correct itself as higher engine speeds allow
the charging system to create maximum
power.
The vehicle can only be driven for a short
time with the readings outside the normal
operating range. If the vehicle must be
driven, turn off all accessories, such as the
radio and air conditioner, and unplug all
chargers and accessories.
Readings outside the normal operating
range indicate a possible problem in the
electrical system. Have the vehicle serviced
as soon as possible.
Seat Belt Reminders
Driver Seat Belt Reminder Light
There is a driver seat belt reminder light on
the instrument cluster.
103
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