Why won’t my G2500 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’ve been leaving the doors slightly open and the lights on overnight. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old G2500 battery?

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

How much will replacing my GMC G2500’s battery cost if I get a DieHard battery?

You can find affordable G2500 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.

How long is a car battery good for?

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 G2500’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 G2500 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 remove corrosion from my G2500 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your G2500’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.

Where can I find a battery for my G2500?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install G2500 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

Car Batteries for 1986 GMC G2500

Get a New GMC Battery

Get a Battery for Your GMC G2500

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1986 GMC G2500 today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1986 GMC G2500

Researching battery replacements for your GMC G2500? Use this chart to find the right battery size and CCAs for your GMC G2500.

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
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
78-1	V6/4.3L	Replacement 24 months	Performance months	700
78FT-2	V6/4.3L	Replacement 36 months	Performance months	800
78-AGM	V6/4.3L	Replacement 36 months	Performance months	740
78-1	V8/6.2L	Replacement 24 months	Performance months	700
78FT-2	V8/6.2L	Replacement 36 months	Performance months	800
78-AGM	V8/6.2L	Replacement 36 months	Performance months	740

BATTERIES
V8/5.0L - 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: 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
V6/4.3L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
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
V8/6.2L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
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 GMC G2500 Car Batteries

You can pretty much drive your GMC G2500 until you don't want to anymore. But your G2500's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. You want to replace your 1986 GMC G2500 battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A lagging starter, an illuminated check engine light or battery signal, swollen battery case, corrosion-covered posts, or dim headlights may all indicate that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 1986 GMC G2500. Car batteries are one of our many specialties! Our technicians are familiar with GMC-specific recommendations for G2500 battery CCAs and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Find the Right DieHard Battery for Your G2500

Your GMC G2500 deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. Your G2500 needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations and house the latest technology to satisfy the increasing power demands of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your GMC G2500 and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

Making Your G2500’s New Battery Last

Have you recently had a fresh battery installed in your GMC G2500? Great job! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, limiting short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Answers to Your G2500 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a G2500-specific battery question, visit your nearest store. Our technicians are happy to help.

Why won’t my G2500 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’ve been leaving the doors slightly open and the lights on overnight. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care to learn more about the state of your battery.
What happens to my old G2500 battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my GMC G2500’s battery cost if I get a DieHard battery? You can find affordable G2500 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.
How long is a car battery good for? 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 G2500’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 G2500 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 remove corrosion from my G2500 car battery? Regularly inspecting and cleaning your battery terminals will help keep your G2500’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.
Where can I find a battery for my G2500? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install G2500 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.