Fast Idle System; Engine Coolant Heater - GMC 2010 Savana 1500 Cargo Owner's Manual

Fast Idle System

Fast Idle System with Switch
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.
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.
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.

Engine Coolant Heater

If the vehicle has the DURAMAX Diesel engine, see the
DURAMAX Diesel manual for more information.
The engine coolant heater can provide easier starting
and better fuel economy during engine warm-up in cold
weather conditions at or below 0°F (−18°C). Vehicles
with an engine coolant heater should be plugged
in at least four hours before starting. An internal
thermostat in the plug-end of the cord may exist
which will prevent engine coolant heater operation
at temperatures above 0°F (−18°C).
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