Why doesn’t my K2500 battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead K2500 battery?

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

How much will replacing my GMC K2500’s battery cost if I get a DieHard battery?

Get affordable prices on GMC K2500 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.

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.

What is the white, crusty stuff around my K2500’s battery post?

The white, crusty stuff that can accumulate around K2500 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 K2500 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your K2500’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 K2500?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install K2500 batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.

Car Batteries for 1991 GMC K2500

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Get a New GMC K2500 Battery

Don't let a failing battery slow you down. Shop replacement batteries for 1991 GMC K2500s today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1991 GMC K2500

Researching battery replacements for your GMC K2500? Check the chart to find the right car battery size and cold cranking amps for your K2500.

Battery	Engine	Warranty		Cold Cranking Amps
34/78-4	V6/4.3L	Replacement 24 months	Performance months	800
78FT-2	V6/4.3L	Replacement 36 months	Performance months	800
78-AGM	V6/4.3L	Replacement 36 months	Performance months	740
75-2	V8/5.0L	Replacement 24 months	Performance months	650
78FT-2	V8/5.0L	Replacement 36 months	Performance months	800
78-AGM	V8/5.0L	Replacement 36 months	Performance months	740
75-2	V8/5.7L	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
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	V8/7.4L	Replacement 24 months	Performance months	650
75FT-3	V8/7.4L	Replacement 36 months	Performance months	700
78-AGM	V8/7.4L	Replacement 36 months	Performance months	740

BATTERIES
V6/4.3L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
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
V8/5.0L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
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
V8/5.7L - 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
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
V8/7.4L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
V8/7.4L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V8/7.4L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buy the Right Battery for Your GMC K2500

Your K2500 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 K2500’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A slow engine crank, a blinking battery or check engine light, swollen battery case, corroded battery posts, or weak lights may all indicate 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. Visit us for a complimentary battery check and, if needed, get your GMC K2500 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand GMC service recommendations for K2500 battery CCAs and reserve capacity. Get help figuring out the battery size that's best for your K2500, and schedule a fast car battery replacement at your earliest convenience.

Is There a DieHard Battery for K2500s?

We only want what’s best for your GMC K2500, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries go above and beyond using state-of-the-art advancements to satisfy the growing power requirements of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your GMC K2500 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.

After Buying 1991 GMC K2500 Battery

Got a new car battery installed in your 1991 GMC K2500? Great job! Now, help it last longer and stay charged by caring for it from the get-go. Give your new battery a hand by decreasing the number of short trips you take, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Commonly Asked K2500 Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a K2500-specific battery question, stop by your nearest store. Our technicians have the answers.

Why doesn’t my K2500 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead K2500 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my GMC K2500’s battery cost if I get a DieHard battery? Get affordable prices on GMC K2500 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.
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.
What is the white, crusty stuff around my K2500’s battery post? The white, crusty stuff that can accumulate around K2500 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 K2500 car battery? Regularly inspecting and cleaning your battery terminals will help keep your K2500’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 K2500? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install K2500 batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.