Why won't my K20 Suburban battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead K20 Suburban battery?

We recycle it! Nearly 100% of all lead-acid batteries are recyclable.

What’s the cost of DieHard batteries for Chevrolet K20 Suburbans?

Chevrolet K20 Suburban batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How often should I replace my car battery?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

What is the white, crusty substance accumulating on my K20 Suburban’s battery post?

A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your K20 Suburban car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.

How do I clean a corroded K20 Suburban battery terminal?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your K20 Suburban owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I find a battery for my K20 Suburban?

You can shop for K20 Suburban batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

Car Batteries for 1984 Chevrolet K20 Suburban

Get a New Chevrolet Battery

Get a New Chevrolet K20 Suburban Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1984 Chevrolet K20 Suburban at Firestone Complete Auto Care.

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The Right Battery Size for a 1984 Chevrolet K20 Suburban

Researching battery replacements for your Chevrolet K20 Suburban? Check the chart to find the right car battery size and cold cranking amps for your K20 Suburban.

Battery	Engine	Warranty		Cold Cranking Amps
75-2	V8/5.7L	Replacement 24 months	Performance months	650
78FT-2	V8/5.7L	Replacement 36 months	Performance months	800
78-AGM	V8/5.7L	Replacement 36 months	Performance months	740
34/78-4	V8/6.2L	Replacement 24 months	Performance months	800
78FT-2	V8/6.2L	Replacement 36 months	Performance months	800
78-AGM	V8/6.2L	Replacement 36 months	Performance months	740

BATTERIES
V8/5.7L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
V8/5.7L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/5.7L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/6.2L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V8/6.2L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/6.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buying a Replacement Battery for Chevrolet K20 Suburban

Your K20 Suburban doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your K20 Suburban’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corroded battery terminals, and subpar electrical performance may all indicate that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Chevrolet K20 Suburban a replacement battery. Car batteries are only one of our many strong suits. Our expert technicians understand Chevrolet service recommendations for K20 Suburban battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for K20 Suburbans

We only want what’s best for your Chevrolet K20 Suburban, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond and house the latest technology to meet the growing power requirements of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your K20 Suburban and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That's the kind of battery we deliver.

Caring for a New Chevrolet K20 Suburban Battery

Got a new car battery installed in your 1984 Chevrolet K20 Suburban? Great job! Give your new car battery the best start with proper care. Help extend your car battery’s life by decreasing the number of short trips you take, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Commonly Asked K20 Suburban Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a K20 Suburban-specific battery question, pay us a visit. Our technicians have the answers.

Why won't my K20 Suburban battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead K20 Suburban battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for Chevrolet K20 Suburbans? Chevrolet K20 Suburban batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How often should I replace my car battery? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
What is the white, crusty substance accumulating on my K20 Suburban’s battery post? A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your K20 Suburban car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.
How do I clean a corroded K20 Suburban battery terminal? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your K20 Suburban owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.
Where can I find a battery for my K20 Suburban? You can shop for K20 Suburban batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.