The battery in your Oldsmobile Alero is maintenance-free, which means that you do not need to monitor the fluid level in the battery. If your Alero battery fails, you should replace it immediately. Oldsmobile recommends using AC Delco batteries in your car. Take the old battery to an auto parts retailer to be sure you obtain the proper replacement for your vehicle.
Raise and secure the hood. Remove the bolt securing the battery retaining strap with a socket and ratchet. Set the retaining strap aside.
Remove the negative battery cable with a socket and ratchet. Remove the positive cable with a socket and ratchet.
Lift the battery out of the compartment. Insert the new battery in the tray. Secure the retaining strap and tighten the bolt with a socket and ratchet.
Attach the positive battery cable. Tighten the cable with a socket and ratchet. Attach the negative battery cable and tighten it with a socket and ratchet.
Close the hood. Start the engine to test the battery.
