How do you turn on the high idle on a Duramax?
How do you turn on the high idle on a Duramax? High Idle Speed Enable and DisableTurn the ignition ON with the engine OFF.Depress the accelerator pedal to the floor and hold down.While the accelerator pedal is depressed, depress the brake pedal 3 times in less than 8 seconds.Release the accelerator pedal.Start the engine. Where is the fast idle switch on a Duramax? The manual fast idle switch is operated using the cruise control buttons on the left side of the steering wheel. . The parking brake is set. . The brake pedal is not pressed. Where is the ignition...