Electric Air Conditioning; Compressor; Hybrid System Information; Emergency/First Responders - GMC Silverado 2009 Getting To Know Manual

2-mode hybrid
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vehicle's Hybrid Energy Storage System
for use by the hybrid system, contributing
to increased fuel economy.
The computer-controlled braking system
blends the operation of regenerative
braking with the conventional hydraulic
disc brakes. The system applies the
brakes through a high pressure accu-
mulator. You may hear the motor-driven
pump when it recharges the accumulator
pressure. This recharging cycle is normal.
Pumping the brake pedal repeatedly uses
the reserved accumulator pressure more
quickly.
See your Hybrid Owner Manual.

Electric Air Conditioning

Compressor

Your vehicle has an electrically powered
air conditioning compressor that
provides continuous air conditioning
operation and passenger comfort while
the engine cycles on and off.
When operating the climate control
system, select the AUTO mode and the
desired temperature setting to allow the
system to automatically adjust fan speed
and airflow direction. In the AUTO mode,
the system adjusts to make the most
efficient use of electrical power.
To get the most engine off time and the
highest fuel savings, select a higher
temperature setting or turn off the air
conditioning. Continuous air conditioning
use can cause the engine to start more
frequently when in the Auto Stop mode.
Due to the quiet operation of the
vehicle, especially when the engine has
turned off, some noise may be heard
occasionally from the air conditioning
compressor.
Refer to the Automatic Climate Controls
section for information about the fea-
tures of the climate controls.
See your Hybrid Owner Manual.

Hybrid System Information

(if equipped)
To view the hybrid system information
on the Navigation Entertainment System
(if equipped), press the MENU hard key,
and then touch the Hybrid screen button.
The hybrid screen has icons of an
engine, battery, transmission and
wheels. While the vehicle is in operation,
these icons will change color indicating
the source of power to the transmission
and, ultimately, the wheels. Power can
be provided entirely by the engine,
electric motors, or a combination of
both. An icon will also indicate when
the battery is being recharged by the
regenerative braking system. A text box
at the bottom of the screen will indicate
the current method of power.
See your Hybrid Owner Manual.

Emergency/First Responders

In emergency situations, First
Responders can disable the 300-volt
Hybrid Energy Storage System by cutting
the 12-volt battery cables that are clearly
labeled in the engine compartment.
See your Hybrid Owner Manual.
5

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