Chevrolet B7 2001 Owner's Manual page 18

The manual fast idle feature is activated by pressing the
switch on the instrument panel. When the switch is
pressed again, or any of the previous conditions are not
met, manual fast idle will be deactivated.
For vehicles with gasoline engines, the manual fast idle
has been preset at the factory. Your dealer may change
the setting to fit your needs.
For vehicles with diesel engines, manual fast idle can be
used to set any desired idle speed. To set a new
temporary engine idle speed:
1. Make sure all of the previously described conditions
are met.
2. Press the accelerator pedal to the desired
engine speed.
3. Momentarily press the manual FAST IDLE switch.
For vehicles with diesel engines, the temporary idle
speed will be set. This new rpm level will be
remembered by the system until either the ignition is
turned to OFF or a new idle speed is set.
Radiator Shutters (If Equipped)
Radiator shutters aid engine warm
airflow through the radiator and charge air cooler to
conserve heat in cold conditions.
The radiator shutters on your vehicle (if equipped)
operate automatically. When the ignition switch is in
START and the engine temperature is below 195
R
_
(90 C) for Caterpillar diesel, the shutters will close,
blocking the flow of air through the radiator and charge
air cooler. When the engine temperature reaches 195
R
_
(90 C) for Caterpillar diesel, the shutters will open to
the normal operating position.
-
up by blocking the
_
F
_
F
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