Chevy Warranty Coverage Explained

Last updated: August 17, 2026  |  Service area: Denver, Lakewood, and the Front Range

Almost everyone who buys a new Chevrolet can recite two numbers: three years and five years. Almost nobody can tell you which one covers the air conditioning, what happens to the tires, how long rust-through protection lasts, or whether the high-voltage battery in an Equinox EV is under the same clock as the infotainment screen. Those details are where warranty conversations actually go sideways at the service counter. This guide lays out every layer of Chevrolet’s factory limited warranty in plain English, with the specific terms and durations, so you know exactly what is covered before you need it.

Every Layer of Chevrolet Warranty Coverage at a Glance

Chevrolet’s factory coverage is not one warranty — it is a stack of separate coverages with different clocks. Here is the whole stack in one place. Durations shown are typical terms; other durations are available on some vehicles, and your warranty manual is the controlling document.

Bumper-to-Bumper: 3 Years / 36,000 Miles

This is the broadest layer and the one most people mean when they say “still under warranty.” It covers the entire vehicle — parts and labor — to correct any defect in materials or workmanship, from the date the vehicle is first delivered until it reaches 3 years or 36,000 miles, whichever comes first.

Two things people routinely miss. First, your original tires are covered against defects in material or workmanship, but wear-out is explicitly not considered a defect, and tire coverage is prorated after 12,000 miles. If your tires are down to the wear bars at 30,000 miles from Front Range highway commuting, that is normal wear, not a warranty claim. Second, towing to the nearest authorized dealership for a warranty repair is included in bumper-to-bumper coverage. You should not be paying a tow bill to get a covered defect fixed.

What bumper-to-bumper does not cover is just as important: routine maintenance, slight noise or vibration that falls within normal vehicle characteristics, and damage from accident, misuse, insufficient maintenance or alteration.

Powertrain: 5 Years / 60,000 Miles

Powertrain coverage runs longer than bumper-to-bumper but is much narrower. It covers the components that make the vehicle move, for defects in materials and/or workmanship:

• Engine — engine block, cylinder head, manifolds, timing gears, oil pump, all internally lubricated parts, seals, gaskets and internal electrical components.
• Transmission / transaxle and transfer case (if equipped) — the case, all internally lubricated parts, mounts, seals, gaskets and internal electrical components.
• Drive systems — propeller shafts, universal joints, constant-velocity joints, axle shafts, bearings, final-drive housings and all internally lubricated parts.
• Emission control systems — covered under the powertrain term as well as under the separate federal emissions warranty.

Here is the distinction that causes the most friction at the service desk: sensors, wiring, connectors, radiators, hoses, coolant and cooling lines are not powertrain components. A failed coolant hose at 45,000 miles is outside bumper-to-bumper coverage and outside powertrain coverage. That gap between 36,000 and 60,000 miles — where the engine internals are covered but the peripheral systems around them are not — is exactly the window a Chevrolet Protection Plan is designed to fill.

Powertrain coverage is transferable to a new owner if the warranty is still active, which is worth knowing when you sell privately. One exception: 2023 Corvette Z06 warranty transferability is subject to a 6-month retention policy from the date of purchase, and transferring ownership before that voids the bumper-to-bumper, powertrain, sheet metal, tire and accessory coverages.

Duramax Diesel: 5 Years / 100,000 Miles

Diesel buyers get a meaningfully longer term. Silverado 2500 and 3500 HD pickups equipped with the 6.6L Duramax turbo-diesel carry a 5-year/100,000-mile limited powertrain warranty — 40,000 miles longer than the standard 5-year/60,000-mile term — along with a matching 5-year/100,000-mile 24/7 roadside assistance program and courtesy transportation program.

For fleet operators and contractors running HD trucks out of Denver, Commerce City and the northern I-25 corridor, that difference is real money. A work truck can put 25,000 miles a year on the odometer, which means the standard powertrain term expires in about two and a half years while the diesel term runs the full five. Diesel vehicles also get a bonus on the covered first maintenance visit: in addition to the oil change, filter change, multi-point inspection and tire rotation, the visit includes a top-off of ACDelco diesel exhaust fluid, up to four gallons.

EV Battery and Propulsion Coverage: 8 Years / 100,000 Miles

The question every EV shopper asks first is what happens if the battery fails, and the answer is the longest single coverage term Chevrolet offers. In addition to bumper-to-bumper coverage, certain electric propulsion components on Chevrolet electric vehicles — including the high-voltage battery — are covered for 8 years or 100,000 miles, whichever comes first, from the vehicle’s original in-service date. That applies across the current Chevy EV lineup: Bolt, Equinox EV, Blazer EV and Silverado EV. The propulsion battery pack and its internal components on the Corvette E-Ray carry the same 8-year/100,000-mile term.

EV owners also get two extensions that gas owners do not. Courtesy transportation is extended from 5 years/60,000 miles to 8 years/100,000 miles, and tow coverage runs 8 years/100,000 miles on 2016-or-newer Chevrolet EVs. Roadside assistance itself runs 5 years/60,000 miles on 2016-or-newer Chevrolet EVs.

A practical Colorado note: cold weather temporarily reduces usable EV range, and that reduction is normal physics rather than a battery defect. Charging to 80 percent for daily use, keeping the vehicle plugged in when possible so the battery can condition itself, and adjusting above 80 percent only for longer trips are the habits GM recommends for battery health. None of that changes your coverage — but it does keep you from filing a claim on behavior that is working as designed.

Because EVs have no engine oil, transmission fluid or spark plugs to service, the covered first maintenance visit for a 2024-or-newer EV is a 4-tire rotation plus a multi-point vehicle inspection, completed within the first 12 months of ownership.

Corrosion and Rust-Through: The Coverage Colorado Drivers Should Read Twice

These are two different coverages with two different clocks, and Front Range drivers should know the difference. Corrosion coverage protects all body and sheet metal components against corrosion for 3 years/36,000 miles. Rust-through protection — defined specifically as an actual hole in the panel — runs 6 years/100,000 miles.

CDOT’s magnesium chloride brine keeps Front Range highways passable in January and is genuinely corrosive to vehicle underbodies over time. Two things follow from that. First, wash the underbody regularly through winter; it costs a few dollars and it is the single most effective thing you can do. Second, do not apply aftermarket rustproofing on the assumption it helps. GM makes no recommendation about the value of such products and warns that after-manufacture rustproofing may create an environment that reduces the corrosion resistance built into the vehicle — and repairs to correct damage caused by those applications are not covered under the New Vehicle Limited Warranty.

Your First Maintenance Visit Is Covered

This benefit gets left on the table more than any other, because it has a deadline. On a 2024 or newer Chevrolet, one maintenance visit is covered if you come in during the first 12 months of ownership. For gas and diesel vehicles that visit includes an oil change and oil filter change, a multi-point vehicle inspection, and a 4-tire rotation according to your vehicle’s maintenance schedule. Diesel vehicles add a top-off of ACDelco diesel exhaust fluid, up to four gallons. EV owners get the 4-tire rotation and multi-point inspection. New Corvette owners get one covered visit including an oil change — Mobil 1 is required — and a multi-point inspection, and have 24 months rather than 12 to use it.

If you bought a Chevy in the last year and have not used this visit, check your delivery date and book before the window closes. Air filters are not included, and other restrictions apply.

Roadside Assistance and Courtesy Transportation

Roadside assistance and courtesy transportation both run 5 years/60,000 miles on a new Chevrolet, whichever comes first, with courtesy transportation extended to 8 years/100,000 miles for EV owners. Roadside assistance includes 24/7 toll-free phone assistance, emergency towing to your nearest Chevrolet dealer, flat-tire fix or change, battery jump start, vehicle unlock service and emergency fuel delivery.

If your vehicle needs a warranty repair during the coverage period, courtesy transportation provides alternate transportation, reimbursement of certain transportation expenses, or both. Availability of loaner vehicles varies by dealer, so ask when you book — especially if the repair requires ordered parts.

How to Actually Get a Warranty Repair Done

The mechanics of a claim are straightforward, but a few rules catch people out:

• Warranty work must be completed by a GM dealer. Work done at independent shops may not be eligible for reimbursement.
• The vehicle has to be diagnosed by a GM dealer before anyone can determine whether the warranty covers the repair.
• There may be a diagnosis fee. If the repair turns out to be covered, that fee is reimbursed. If it is not covered, diagnosis fees are not refundable.
• Repairs that qualify are performed at no charge. Repairs that do not qualify are charged to you, and your advisor should tell you which is which before work begins.
• Recall work is always completed at no charge at a GM dealer, regardless of warranty status.

If a warranty concern is not resolved to your satisfaction, GM’s published process is to first discuss it with dealership management — most concerns get resolved at that level — and if that does not work, contact the GM Customer Assistance Center at 1-800-462-8782 with your VIN, dealer name and location, date of service and current mileage.

Warranty Coverage on a Certified Used Chevrolet

If you are buying used rather than new, the coverage picture is different. As of June 2, 2026, GM’s certified used vehicle program for Chevrolet, Buick and GMC dealers is CarBravo. Certified vehicles under 10 model years old with fewer than 100,000 miles carry a 12-month/12,000-mile bumper-to-bumper limited warranty with no deductible that begins after any remaining factory warranty expires. Certified vehicles 10 to 15 model years old and/or with 100,000 to 150,000 miles carry a 30-day/1,000-mile powertrain limited warranty. Both include 24-hour roadside assistance and courtesy transportation for the warranty period. Coverage and terms may vary by state.

Frequently Asked Questions

How long is the Chevy bumper-to-bumper warranty?

The Chevrolet Bumper-to-Bumper New Vehicle Limited Warranty covers the entire vehicle for 3 years or 36,000 miles, whichever comes first, from the date the vehicle is first delivered. It covers parts and labor to correct any defect in materials or workmanship, and includes towing to the nearest authorized dealership for warranty repairs. Original tires are covered against defects but not wear-out, and tire coverage is prorated after 12,000 miles.

What does the Chevy powertrain warranty cover?

The Chevrolet Powertrain Limited Warranty runs 5 years or 60,000 miles, whichever comes first, and covers the engine, transmission/transaxle, transfer case if equipped, drive systems and emission control systems for defects in materials or workmanship. It does not cover sensors, wiring, connectors, radiators, hoses, coolant or cooling lines. Silverado 2500 and 3500 HD pickups with the 6.6L Duramax turbo-diesel carry a longer 5-year/100,000-mile limited powertrain warranty.

How long is the Chevy EV battery warranty?

Certain electric propulsion components on Chevrolet electric vehicles, including the high-voltage battery, are covered for 8 years or 100,000 miles, whichever comes first, from the vehicle’s original in-service date. That applies to the Bolt, Equinox EV, Blazer EV and Silverado EV, and the propulsion battery pack on the Corvette E-Ray carries the same term. EV owners also get courtesy transportation extended to 8 years/100,000 miles and tow coverage for 8 years/100,000 miles on 2016-or-newer Chevrolet EVs.

Does the Chevy warranty transfer to a new owner?

Yes. Warranties that are still active transfer to the new owner, which supports resale value on a private sale. The one notable exception is the 2023 Corvette Z06, whose warranty transferability is subject to a 6-month retention policy from the date of purchase. If ownership is transferred before that period ends, the bumper-to-bumper, powertrain, sheet metal, tire and accessory coverages under GM’s New Vehicle Limited Warranty are voided.

How long is Chevy rust and corrosion coverage?

Two separate coverages apply. Corrosion protection on all body and sheet metal components runs 3 years or 36,000 miles, whichever comes first. Rust-through protection, defined as an actual hole in the panel, runs 6 years or 100,000 miles. GM notes that applying after-manufacture rustproofing products may reduce the built-in corrosion resistance of the vehicle, and repairs to correct damage caused by those applications are not covered.

Is my first oil change free on a new Chevy?

Yes, on a 2024 or newer Chevrolet, one maintenance visit is covered if completed at a participating dealer within the first 12 months of ownership. For gas and diesel vehicles it includes an oil change and oil filter change, a multi-point vehicle inspection and a 4-tire rotation according to your maintenance schedule. Diesel vehicles also get a top-off of ACDelco diesel exhaust fluid up to four gallons. EVs get a 4-tire rotation and multi-point inspection. Corvette owners have 24 months to use their covered visit. Air filters are not included.

Can I get Chevy warranty work done at any dealer in Denver?

Yes. Warranty repairs must be completed by a GM dealer, but not necessarily the dealer that sold you the vehicle. You can bring your Chevy to any authorized Chevrolet dealer, including Emich Chevrolet in the Denver metro. The vehicle must be diagnosed by a GM dealer before coverage can be determined. There may be a diagnosis fee, which is reimbursed if the repair turns out to be covered by warranty.

What is not covered by the Chevrolet warranty?

Routine maintenance is not covered, nor are slight noises, vibrations or other normal characteristics of the vehicle. Damage from accident, misuse, alteration or insufficient maintenance is excluded, as is damage from contaminated or poor-quality fuel and damage from impact such as flying debris. On the powertrain warranty specifically, sensors, wiring, connectors, radiators, hoses, coolant and cooling lines are not covered components. Consult your Chevrolet Limited Warranty and Owner Assistance manual for the complete list.

Cost, Timing, and What to Expect at Emich Chevrolet

Covered warranty repairs cost you nothing in parts or labor. Diagnosis time varies by concern — a straightforward component failure is often same-day, while an intermittent electrical fault can take longer to reproduce and confirm. If parts have to be ordered, your advisor will give you a timeline and discuss courtesy transportation options at the same time. Bring your VIN and, if you have them, your service records; documented maintenance makes an insufficient-maintenance question a non-issue.

Our service department is staffed by Chevrolet-certified technicians using Genuine GM Parts, which matters in Colorado, where cold starts, altitude tuning and brake wear on Front Range descents all require specific expertise. If you are unsure whether something is covered, book a diagnosis and ask — that is a better use of your time than guessing from a forum thread. We are confident Emich offers the best selection, best pricing, and best sales and service in Denver and Lakewood, and we work to prove it on every visit.

Last updated: August 17, 2026  |  Service area: Denver, Lakewood, Aurora, Wheat Ridge, Golden, and the Front Range. Durations shown are typical terms; other durations may be available. See your dealer or Chevrolet Limited Warranty and Owner Assistance manual for full details, including limitations and exclusions.