GM Service Manual Online
For 1990-2009 cars only

Your vehicle has a standard 12-volt battery and a 42-volt hybrid battery system.

When it is time for a new standard 12-volt battery, get one that has the replacement number shown on the original battery's label. We recommend an ACDelco® replacement battery.

When it is time for a new 42-volt hybrid battery system, see your dealer.

Warning: Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling.

Vehicle Storage

If you are not going to drive your vehicle for 30 days or more you should disconnect the standard 12-volt battery. Remember to reconnect the battery when you are ready to drive your vehicle. You should also disconnect the 42-volt hybrid battery system. See Battery Disconnect Switch .

Caution: Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you are not careful. See Jump Starting for tips on working around a battery without getting hurt.