Why won't my G3500 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery might be 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 nearest Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead G3500 battery?

We’ll recycle your car battery for you!

What’s the cost of DieHard batteries for GMC G3500s?

Get affordable prices on GMC G3500 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come 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.

Why is there white, flaky stuff around my G3500’s battery post?

The white, crusty stuff that can accumulate around G3500 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.

How do I remove corrosion from my G3500 car battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your G3500 owner’s manual for instructions on how to do so.

Who carries G3500 batteries near me?

Your local Firestone Complete Auto Care sells and installs G3500 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

1985 GMC G3500 Car Batteries

Get a New GMC Battery

Get a Battery for Your GMC G3500

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1985 GMC G3500 today and schedule a quick installation at Firestone Complete Auto Care.

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1985 GMC G3500 Battery Replacement & Size

Researching battery replacements for your GMC G3500? Use the following chart to find information on GMC G3500 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
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
75-2	V6/4.3L	Replacement 24 months	Performance months	650
78FT-2	V6/4.3L	Replacement 36 months	Performance months	800
78-AGM	V6/4.3L	Replacement 36 months	Performance months	740
34/78-4	V8/5.7L	Replacement 24 months	Performance months	800
78FT-2	V8/5.7L	Replacement 36 months	Performance months	800
78-AGM	V8/5.7L	Replacement 36 months	Performance months	740

BATTERIES
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
V6/4.3L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
V6/4.3L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V6/4.3L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/5.7L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
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

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Shopping for GMC G3500 Car Batteries

Your G3500 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 G3500’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, an illuminated battery or check engine light, bloated battery case, corroded battery terminals, or dim headlights can all signal that your battery needs attention.

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. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 1985 GMC G3500 running! Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with GMC’s service specs for G3500 car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that's best for your G3500, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for G3500s

We know what’s best for your GMC G3500, which is why we exclusively carry the best. Your G3500 needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard G3500 batteries surpass expectations using the latest innovative technology to meet the growing power needs of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your G3500 and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New GMC G3500 Battery

Did you recently have a new 1985 GMC G3500 car battery installed? Great job! Now, help it last longer and stay charged by caring for it from the get-go. You can take care of your battery by limiting short trips, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your G3500 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have battery questions that are GMC G3500-specific, stop by your nearest store. Our expert techs have the answers you need.

Why won't my G3500 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be 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 nearest Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead G3500 battery? We’ll recycle your car battery for you!
What’s the cost of DieHard batteries for GMC G3500s? Get affordable prices on GMC G3500 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come 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.
Why is there white, flaky stuff around my G3500’s battery post? The white, crusty stuff that can accumulate around G3500 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.
How do I remove corrosion from my G3500 car battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your G3500 owner’s manual for instructions on how to do so.
Who carries G3500 batteries near me? Your local Firestone Complete Auto Care sells and installs G3500 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.