Fast Idle System - GMC Sierra 2010 Owner's Manual

Fast Idle System

Fast Idle System with Switch
This system can be used to increase engine idle speed
whenever the following conditions are met:
The park brake is set.
The brake pedal is not pressed.
The vehicle must not be moving and the
accelerator must not be pressed.
If the vehicle has this
feature it is available only
with cruise control. The
manual fast idle switch is
operated using the cruise
control buttons located on
the left hand side of the
steering wheel.
To control the fast idle:
To Enable the Fast idle, press and release the
Cruise Control On/Off button and ensure that the
LED is lit.
For the preset Fast Idle, press and release the
cruise set switch. This will set the preset fast idle
speed.
For the variable fast idle, press and hold the
accelerator at the desired RPM, then press and
release the cruise control cruise set switch to set
the desired idle speed.
When the fast idle is active the Driver Information
Center (DIC) will display FAST IDLE ON.
One of the following actions will turn off the fast idle:
Pressing the brake.
Selecting the Cancel button.
Releasing the Parking Brake.
The transmission shifter is moved out of P (Park)
or N (Neutral).
Selecting the cruise control on/off button when it
was previously on.
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