Why won't my Sierra 3500 HD battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old Sierra 3500 HD battery?

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

What’s the cost of DieHard batteries for GMC Sierra 3500 HDs?

GMC Sierra 3500 HD batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How often should I replace my car battery?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

What is the white, crusty stuff around my Sierra 3500 HD’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 Sierra 3500 HD 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.

What do I do about corrosion on my Sierra 3500 HD car battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Where can I purchase Sierra 3500 HD batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Sierra 3500 HD 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 2021 GMC Sierra 3500 HD

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GMC Sierra 3500 HD Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 2021 GMC Sierra 3500 HDs today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2021 GMC Sierra 3500 HD

Not sure what battery to get for your GMC Sierra 3500 HD? Use the following chart to find information on GMC Sierra 3500 HD battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	V8/6.6L	Replacement 36 months	Performance months	730
H7-AGM	V8/6.6L	Replacement 36 months	Performance months	850

BATTERIES
V8/6.6L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V8/6.6L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Buying a Replacement Battery for GMC Sierra 3500 HD

Your Sierra 3500 HD 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 Sierra 3500 HD’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or faded headlights may all indicate that your battery is waving goodbye.

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 needed, get your GMC Sierra 3500 HD a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with GMC’s service specs for Sierra 3500 HD battery cold cranking amps and reserve capacity. Get help choosing the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your Sierra 3500 HD?

We know what’s best for your GMC Sierra 3500 HD, which is why we exclusively carry the best. Your Sierra 3500 HD needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the growing power requirements of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your GMC Sierra 3500 HD and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New GMC Sierra 3500 HD Battery

Got a new car battery installed in your 2021 GMC Sierra 3500 HD? Good thinking! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by limiting short trips, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.