Why won't my Envoy battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old Envoy battery?

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

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

GMC Envoy 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?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

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

The white, crusty stuff that can accumulate around Envoy 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.

What do I do about corrosion on my Envoy 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 Envoy owner’s manual for instructions on how to do so.

Where can I find a battery for my Envoy?

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

2002 GMC Envoy Car Batteries

Get a New GMC Battery

GMC Envoy Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 2002 GMC Envoy at Firestone Complete Auto Care.

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2002 GMC Envoy Battery Replacement & Size

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

Battery	Engine	Warranty		Cold Cranking Amps
78-1	L6/4.2L	Replacement 24 months	Performance months	700
78FT-2	L6/4.2L	Replacement 36 months	Performance months	800
78-AGM	L6/4.2L	Replacement 36 months	Performance months	740

BATTERIES
L6/4.2L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
L6/4.2L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buy the Right Battery for Your GMC Envoy

You can pretty much drive your GMC Envoy until you don't want to anymore. But your Envoy's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your Envoy’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated battery or check engine light, swollen battery case, corroded battery posts, and subpar electrical performance can all be signs that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Stop by for a free battery test and, if necessary, a battery replacement to help keep your 2002 GMC Envoy running! Car batteries are only one of our many strong suits. Our technicians are familiar with GMC-specific recommendations for Envoy battery CCAs and reserve capacity. Get help choosing the battery size that's best for your Envoy, and schedule a fast car battery replacement at your earliest convenience.

Is There a DieHard Battery for Envoys?

We know what’s best for your GMC Envoy, which is why we only carry top-of-the-line replacement parts and batteries. Your Envoy needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries shatter expectations and house the latest technology to meet the expanding power needs 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 Envoy and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

Caring for a New GMC Envoy Battery

Did you recently have a new 2002 GMC Envoy car battery installed? Congrats! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by decreasing the number of short trips you take, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your Envoy Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a Envoy-specific battery question, stop by your nearest store. Our technicians have the answers.

Why won't my Envoy battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.
What happens to my old Envoy battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for GMC Envoys? GMC Envoy 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? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
What is the white, crusty stuff around my Envoy’s battery post? The white, crusty stuff that can accumulate around Envoy 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.
What do I do about corrosion on my Envoy 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 Envoy owner’s manual for instructions on how to do so.
Where can I find a battery for my Envoy? Your local Firestone Complete Auto Care sells and installs Envoy batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.