Why won't my G20 battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old G20 battery?

We recycle it, taking care of both your car and the Earth.

What’s the cost of DieHard batteries for Chevrolet G20s?

You can find affordable G20 batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

What is the average lifespan of a car battery?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

Why is there white, flaky stuff around my G20’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 G20 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 corrosion off my G20 vehicle battery?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your G20 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 G20?

Your local Firestone Complete Auto Care sells and installs G20 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

1985 Chevrolet G20 Batteries

Get a New Chevrolet Battery

Get a Battery for Your Chevrolet G20

Don’t let a dead battery stop you. Shop replacement car batteries for your 1985 Chevrolet G20 at Firestone Complete Auto Care.

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Battery Size & Replacement for 1985 Chevrolet G20

Researching battery replacements for your Chevrolet G20? Check the chart to find the right car battery size and cold cranking amps for your G20.

Battery	Engine	Warranty		Cold Cranking Amps
75-2	V8/5.7L	Replacement 24 months	Performance months	650
75FT-3	V8/5.7L	Replacement 36 months	Performance months	700
78-AGM	V8/5.7L	Replacement 36 months	Performance months	740
75-2	V6/4.3L	Replacement 24 months	Performance months	650
75FT-3	V6/4.3L	Replacement 36 months	Performance months	700
78-AGM	V6/4.3L	Replacement 36 months	Performance months	740
34/78-4	V8/5.0L	Replacement 24 months	Performance months	800
78FT-2	V8/5.0L	Replacement 36 months	Performance months	800
78-AGM	V8/5.0L	Replacement 36 months	Performance months	740
75-2	V8/6.2L	Replacement 24 months	Performance months	650
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: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V8/5.7L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V6/4.3L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
V6/4.3L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V6/4.3L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/5.0L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V8/5.0L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/5.0L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/6.2L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
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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Shopping for Chevrolet G20 Car Batteries

You can pretty much drive your Chevrolet G20 until you don't want to anymore. But your G20's battery? Don't count on it to last forever. The average car battery lasts three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Chevrolet G20 stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corroded battery posts, or weak lights can all be signs that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 1985 Chevrolet G20 running! Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Chevrolet service recommendations for G20 car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that's best for your G20, and schedule a weekday or weekend battery replacement service for your car.

Firestone Has DieHard Batteries for G20s

Your Chevrolet G20 deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. Your G20 needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard G20 batteries surpass expectations using the latest innovative technology to satisfy the expanding power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your G20 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.

After Buying 1985 Chevrolet G20 Battery

Have you recently had a fresh battery installed in your Chevrolet G20? Great job! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, limiting short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your G20 Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Chevrolet G20 battery, visit your nearest store. Our expert techs have the answers you need.

Why won't my G20 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.
What happens to my old G20 battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Chevrolet G20s? You can find affordable G20 batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
What is the average lifespan of a car battery? You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.
Why is there white, flaky stuff around my G20’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 G20 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 corrosion off my G20 vehicle battery? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your G20 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 G20? Your local Firestone Complete Auto Care sells and installs G20 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.