How do you remove the battery from a 1999 Chevy Lumina?

To remove the battery from a 1999 Chevy Lumina, first, ensure the vehicle is turned off and the keys are removed. Open the hood and locate the battery; disconnect the negative terminal (usually marked with a minus sign) first to prevent any electrical short. Next, disconnect the positive terminal (marked with a plus sign). Finally, remove any securing brackets or clamps and lift the battery out of the tray carefully.