GM Service Manual Online
For 1990-2009 cars only

If you have been in a collision in which the right side of your vehicle has been hit, your vehicle's sensing system may alert the automatic battery disconnect to open. The battery will disconnect. The 42-volt electrical power to the vehicle will be off and the vehicle will not start. The airbag readiness light will come on. See "Airbag Readiness Light" in the Index of your owner manual. To operate your vehicle, the automatic battery disconnect must be reconnected by a qualified service technician and sensing system parts will need to be replaced. Have your vehicle serviced right away.