What kind of battery do you need for your 2004 grand am?

For a 2004 Pontiac Grand Am, you typically need a Group Size 78 battery, which is a lead-acid type. Ensure it has the appropriate Cold Cranking Amps (CCA) rating, generally around 600 CCA, for optimal performance in colder climates. It's also advisable to check your owner’s manual or consult with an auto parts store for specific recommendations to match your vehicle's electrical system.