Why won’t my K20 Suburban battery hold a charge?

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 been leaving your car doors ajar and the dome lights on during the night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old 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 long can I expect my car battery to last?

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 stuff around my K20 Suburban’s battery post?

The white, crusty stuff that can accumulate around K20 Suburban car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.

What do I do about corrosion on my K20 Suburban car battery?

Regularly inspecting and cleaning your battery terminals will help keep your K20 Suburban’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.

Who carries K20 Suburban batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install K20 Suburban batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

1985 Chevrolet K20 Suburban Batteries

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Get a Battery for Your Chevrolet K20 Suburban

Don't let a failing battery slow you down. Shop replacement batteries for 1985 Chevrolet K20 Suburbans today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1985 Chevrolet K20 Suburban

Researching battery replacements for your Chevrolet K20 Suburban? Use this chart to find the right battery size and CCAs for your Chevrolet K20 Suburban.

Battery	Engine	Warranty		Cold Cranking Amps
34/78-4	V8/5.0L	Replacement 24 months	Performance months	800
75FT-3	V8/5.0L	Replacement 36 months	Performance months	700
78-AGM	V8/5.0L	Replacement 36 months	Performance months	740
78-1	V8/5.7L	Replacement 24 months	Performance months	700
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
75FT-3	V8/6.2L	Replacement 36 months	Performance months	700
78-AGM	V8/6.2L	Replacement 36 months	Performance months	740
78-1	V8/7.4L	Replacement 24 months	Performance months	700
78FT-2	V8/7.4L	Replacement 36 months	Performance months	800
78-AGM	V8/7.4L	Replacement 36 months	Performance months	740

BATTERIES
V8/5.0L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V8/5.0L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V8/5.0L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/5.7L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
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: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V8/6.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/7.4L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
V8/7.4L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/7.4L - 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. Generally, car batteries last from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Chevrolet K20 Suburban stranded. Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated battery or check engine light, bloated battery case, corroded battery posts, or dim headlights can all be signs that your battery is on its last leg.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 1985 Chevrolet K20 Suburban. Car batteries are one of our many specialties! Our technicians are familiar with Chevrolet-specific recommendations for K20 Suburban battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for K20 Suburbans?

We know what’s best for your Chevrolet K20 Suburban, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard K20 Suburban batteries surpass expectations using state-of-the-art advancements to satisfy the growing power needs of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Chevrolet K20 Suburban and have the peace of mind that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Chevrolet K20 Suburban Battery

Have you recently had a fresh battery installed in your Chevrolet K20 Suburban? Good thinking! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by decreasing the number of short trips you take, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your K20 Suburban Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Chevrolet K20 Suburban battery, visit your nearest store. Our technicians are happy to help.

Why won’t my K20 Suburban battery hold a charge? 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 been leaving your car doors ajar and the dome lights on during the night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.
What happens to my old 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 long can I expect my car battery to last? 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 stuff around my K20 Suburban’s battery post? The white, crusty stuff that can accumulate around K20 Suburban car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.
What do I do about corrosion on my K20 Suburban car battery? Regularly inspecting and cleaning your battery terminals will help keep your K20 Suburban’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.
Who carries K20 Suburban batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install K20 Suburban batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.