What is a fast idle switch?
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.
What does elevated idle mean on a Duramax Diesel?
The fuel injection quantity is changed. The turbocharger vane position is commanded closed. the vane position will be farther closed than any other normal operating condition. The instrument panel will indicate the high idle system is active one of two ways:
How to know if high idle is enabled on a Chevy Silverado?
If the engine does not increase to the calibrated high idle speed after the procedure is performed, use the scan tool to verify the Elevated Idle speed feature is enabled. • The driver information center (DIC) will indicate an active high idle. • The manual high idle feature comes enabled from the factory.
How to enable or disable the Manual High idle system?
The Elevated Idle function in the scan tool will disable or enable this feature. If the engine does not increase to the calibrated high idle speed after the procedure is performed, use the scan tool to verify the Elevated Idle speed feature is enabled. To enable or disable the manual high idle system perform the following procedure:
How does the ECM increase the idle speed?
The ECM increases the idle speed using the following adjustments: The fuel injection timing is changed. The fuel injection quantity is changed. The turbocharger vane position is commanded closed. the vane position will be farther closed than any other normal operating condition.
The fuel injection quantity is changed. The turbocharger vane position is commanded closed. the vane position will be farther closed than any other normal operating condition. The instrument panel will indicate the high idle system is active one of two ways:
How big is a 2011 GMC Sierra 2500HD?
Properly equipped, a 2011 GMC Sierra 2500HD can haul up to 3,704 pounds of payload and tow up to 13,000 pounds with its standard ball hitch, and 16,500 pounds with a fifth-wheel connection.
If the engine does not increase to the calibrated high idle speed after the procedure is performed, use the scan tool to verify the Elevated Idle speed feature is enabled. • The driver information center (DIC) will indicate an active high idle. • The manual high idle feature comes enabled from the factory.
What kind of engine does a GMC Sierra 2500HD have?
A new range-topping Denali trim level has also been added to the mix. The standard power plant for the 2011 GMC Sierra 2500HD is a 6.0-liter gasoline V8 engine that produces 360 hp and 380 lb-ft of torque. A six-speed automatic is the only available transmission.