I.Battery Storage

Today's Chevrolets have several electronic devices which result in very small but continuous current drains on their batteries, commonly referred to as "parasitic loads". Vehicles that are not used for an extended period of time may develop extremely discharged and/or permanently damaged batteries resulting from these parasitic loads. Discharged batteries can freeze at temperatures as high as 20~F causing permanent damage.

To alleviate this condition, the negative battery cable, should be disconnected on vehicles which are not going to be in service within a 30-day period. If this is not possible, batteries should be recharged periodically, every 30-60 days, until the green dot is visible.
NOTICE: The ignition switch must be off when connecting or disconnecting battery cables or chargers. Failure to do so may overstress or damage the ECM or other electronic components.