2011 Chevrolet Volt Owner's Manual - Page 395

Vehicle Care Extended Storage Remove the 12‐volt battery black, negative (−) cable from the battery to keep the 12‐volt battery from running down or use a battery trickle charger. In addition, to avoid potential damage to the high voltage battery, perform the following recommended steps: . 10-29 Propulsion System Start Check { WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around the vehicle. 2. Firmly apply both the electric parking brake and the regular brake. See Electric Parking Brake on page 9‑35. Do not use the accelerator pedal, and be ready to turn off the propulsion system immediately if it starts. 3. Try to start the propulsion system in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer for service. Store the high voltage battery with 1/2 charge or less. Always store the vehicle in an environment between −10°C (14°F) and 30°C (86°F). Vehicle storage at extreme temperatures can cause damage to the high voltage battery. . . Remember to reconnect the 12‐volt battery when ready to drive the vehicle.