Why won't my C2500 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 lights on overnight. Stop by for a free battery test at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old C2500 battery?

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

What’s the cost of DieHard batteries for GMC C2500s?

You can find affordable C2500 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 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 C2500’s battery post?

The white, flaky stuff that can build up around your C2500’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your C2500, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I clean corrosion off my C2500 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 C2500 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 C2500?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install C2500 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 GMC C2500 Car Batteries

Get a New GMC Battery

Get a New GMC C2500 Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1985 GMC C2500 today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 1985 GMC C2500

Need more info about GMC C2500 batteries? Use the following chart to find information on GMC C2500 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
34/78-4	V6/4.3L	Replacement 24 months	Performance months	800
75FT-3	V6/4.3L	Replacement 36 months	Performance months	700
78-AGM	V6/4.3L	Replacement 36 months	Performance months	740
78-1	L6/4.8L	Replacement 24 months	Performance months	700
78FT-2	L6/4.8L	Replacement 36 months	Performance months	800
78-AGM	L6/4.8L	Replacement 36 months	Performance months	740
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
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	V8/7.4L	Replacement 24 months	Performance months	800
75FT-3	V8/7.4L	Replacement 36 months	Performance months	700
78-AGM	V8/7.4L	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

BATTERIES
V6/4.3L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
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
L6/4.8L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
L6/4.8L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.8L - 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: 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: 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
V8/7.4L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
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
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

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Shopping for GMC C2500 Car Batteries

Your C2500 doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. You want to replace your 1985 GMC C2500 battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated check engine light or battery signal, swollen battery case, corroded battery terminals, or faded headlights can all signal 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 necessary, a battery replacement to help keep your 1985 GMC C2500 running! Car batteries are one of our many specialties! Our technicians are familiar with GMC-specific recommendations for C2500 battery cold cranking amps 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 C2500

We only want what’s best for your GMC C2500, which is why we carry just that. You need a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard C2500 batteries surpass expectations using state-of-the-art advancements to meet the expanding power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your C2500 and have the peace of mind that 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 C2500 Battery

Got a new car battery installed in your 1985 GMC C2500? Great job! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by cutting back on unnecessary short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.