2011 Chevrolet Volt Owner's Manual - Page 330

9-28 Driving and Operating DIC messages indicate reduced propulsion power, that the engine is not available, and the need for fuel or service. Once the vehicle is refueled, or the malfunction is corrected, the engine will start the next time the vehicle is turned on to perform a self test, and DIC messages will not be displayed. Once the engine starts successfully, normal operation will continue in either Electric or Extended Range Mode. The engine will stop running after the self test is completed, and based on the current mode of operation. See Fuel System Messages on page 5‑48 and Service Vehicle Messages on page 5‑51. Press the Drive Mode button again to return to Normal Mode and it becomes active in three seconds. If Mountain Mode is not selected for these conditions, propulsion power may be reduced and the engine speed may increase. See Propulsion Power Messages on page 5‑50. The vehicle returns to Normal Mode at each start to maintain a smaller battery charge reserve for normal driving. Maintenance Modes Engine Maintenance Mode (EMM) Engine Maintenance Mode (EMM) runs the engine to keep it in good working condition after approximately six weeks of no or very limited engine operation. EMM will force the engine to run, even if there is a charge to power the vehicle. When EMM is needed, the EMM Request screen appears on the center stack display at vehicle start. Out of Fuel/Engine Unavailable If the vehicle runs out of fuel, or the engine will not start due to a malfunction, the vehicle can continue to be driven in Electric Mode. The vehicle will have less responsive acceleration. If Yes is selected, EMM will begin. The engine will run for a set amount of time without turning off.