2014 Chevrolet Silverado 3500 HD Crew Cab Owner Manual - Page 293

Driving and Operating 9-27 Fast Idle System If equipped, this feature is available only with cruise control. The manual fast idle switch is operated using the cruise control buttons on the left side of the steering wheel. This system can be used to increase engine idle speed whenever the following conditions are met: ... 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: . . Retained Accessory Power (RAP) The following vehicle accessories can be used for up to 10 minutes after the engine is turned off: ... Pressing the brake. Selecting the cruise control cancel button. Releasing the parking brake. Moving the transmission shift lever out of P (Park) or N (Neutral). Selecting the cruise control on/ off button when it was previously on. Pressing the cruise control SETbutton a second time. Pressing the accelerator more than one-quarter of the way down. Turning the ignition switch to the LOCK/OFF position. Audio System Power Windows OnStar System (if equipped) Sunroof (if equipped) . . The parking brake is set. The brake pedal is not pressed. The vehicle must not be moving and the accelerator must not be pressed. To enable the Fast Idle System, press and release the cruise control on/off button and ensure that the switch indicator light is lit. Press and release the cruise control SET- button. Engine speed will be held at approximately 1200 rpm. . To control the fast idle: . . . These features work when the key is in ON/RUN or ACC/ ACCESSORY. Once the key is turned from ON/RUN to LOCK/OFF, the windows and sunroof continue to work up to 10 minutes until any door is opened. The radio continues to work for up to 10 minutes or until the driver door is opened. Engine Coolant Heater The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an . .