Vehicles from each of GM’s car brands—Chevrolet, Buick, GMC, and Cadillac—come with a new vehicle limited warranty. But when it expires, you’re on your own to cover mechanical repairs, which can end up costing you thousands of dollars. A GM extended warranty can prolong the manufacturer’s warranty to help cover your vehicle long-term.

Our experts wanted to get a closer look at the coverage and cost of a GM extended warranty to compare the manufacturer’s plans with the best extended car warranty companies on the market. This information can help you make your own informed decision on the best extended auto warranty for you.

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GM Extended Warranty Overview

GM is the largest car manufacturer in America and operates in 14 other countries as well. From 1931 to 2007, General Motors was the leader in US annual car sales. Although it’s no longer No. 1, GM still ranks among the top manufacturers today.

Just because GM is a popular automaker, however, doesn’t mean its vehicles are reliable. One of the most important factors to consider when deciding whether you need extended warranty coverage is how dependable your vehicle is.

How Reliable are GM Vehicles?

Here’s an overview of RepairPal reliability scores for each of GM’s brands:

  Reliability Rating
(Out of
5.0 Stars) 
Reliability Ranking
(Out of
32 Car Brands) 
Average Annual Repair Cost Frequency of Repair Shop Visits per Year Percentage of Repairs Considered Severe
Average Across All GM Brands 3.0 N/A $706 0.3 12
Buick 3.5 13 $608 0.4 13
Cadillac 3.0 26 $783 0.4 16
Chevrolet 3.5 20 $649 0.2 13
GMC 3.0 22 $784 0.3 16

While a 3.0 or 3.5 out of 5.0 seems like an above-average score, reliability rankings may give a better picture of where each brand stands compared to competitors. On the whole, GM vehicles are not consistently reliable.

GM brands also have higher-than-average percentages of severe breakdowns. This means that when you bring your car into the repair shop, it’s more likely that you’ll have a major issue to be fixed.

Fortunately, a GM extended warranty can help with many of the most severe repairs.

What GM Coverage Do You Already Have?

Buick, Chevrolet, and GMC vehicles come with a 3-year/36,000-mile bumper-to-bumper GM factory warranty that covers any defects in material or workmanship for factory parts. Because it’s a luxury brand, Cadillac offers slightly longer factory coverage, expiring at 4 years/50,000 miles.

The GM factory warranty includes your car’s electronic systems, air conditioning, and safety systems. It does not cover items such as body paint, wear-and-tear parts like tires and brake pads, or routine maintenance like oil changes.

All GM vehicles also come with powertrain coverage for major car parts like the engine, transmission, and drive systems. Buick, Chevrolet, and GMC powertrain warranties last for 5 years/60,000 miles, and Cadillac’s lasts for 6 years/70,000 miles.

 

How Much Does a GM Extended Warranty Cost?

GM protection plans can cost anywhere between $1,500 and $3,250, depending on whether you drive a Buick, Chevy, or GMC. Cadillac extended warranties are a little pricier, ranging from about $2,000 to $4,000. In our 2021 extended car warranty survey which polled 1,000 consumers, 45 percent of respondents stated they paid between $1,500 and $2,500 for an extended car warranty.

You can choose to pay for coverage in monthly installments, but if you’d rather pay the total price in a one-time payment, you’ll save five percent on your overall cost. Additionally, all monthly payment plans require a $99 activation fee.

Besides your vehicle make, some factors that will influence the cost of your GM extended warranty include:

  • Vehicle model, age, and mileage
  • Location
  • Coverage level
  • Provider
  • Deductible

Deductibles for a GM warranty can range from $0 to $100 depending on your model and the plan you choose.

See sample quotes for a GM extended warranty for each car brand below.

GM Extended Warranty: Buick

Here is a breakdown of the GM extended warranty contract terms and prices for a 2019 Buick Encore:

Term Length Total Price Monthly Payments
24 months/24,000 miles $1,752.75 $124.71 for 14 months
36 months/36,000 miles $2,488.05 $120.00 for 21 months
48 months/48,000 miles $3,027.65 $147.04 for 21 months
60 months/60,000 miles $3,208.15 $156.09 for 21 months

GM Extended Warranty: GMC

This is how much a GM extended warranty would cost for a 2019 GMC Sierra 1500:
Here is a breakdown of the GM extended warranty contract terms and prices for a 2019 Buick Encore:

Term Length Total Price Monthly Payments
24 months/24,000 miles $1,566.55 $110.71 for 14 months
36 months/36,000 miles $2,188.75 $105.00 for 21 months
48 months/48,000 miles $2,607.75 $126.00 for 21 months
60 months/60,000 miles $2,803.45 $135.80 for 21 months

GM Extended Warranty: Chevrolet

These are the GM extended warranty options for a 2019 Chevrolet Colorado:

Term Length Total Price Monthly Payments
24 months/24,000 miles $1,566.55 $110.71 for 14 months
36 months/36,000 miles $2,188.75 $105.00 for 21 months
48 months/48,000 miles $2,607.75 $126.00 for 21 months
60 months/60,000 miles $2,803.45 $135.80 for 21 months

GM Extended Warranty: Cadillac

Here is a breakdown of a GM extended car warranty for a 2019 Cadillac Escalade:

Term Length Total Price Monthly Payments
24 months/24,000 miles $2,018.75 $144.71 for 14 months
36 months/36,000 miles $2,926.95 $142.00 for 21 months
48 months/48,000 miles $3,672.95 $179.38 for 21 months
60 months/60,000 miles $3,850.35 $188.28 for 21 months

What Does a GM Extended Warranty Cover?

The American automaker offers Platinum Protection Plans for each of its four brands, which you can purchase even after your new car factory warranty expires. This is a unique offer considering most manufacturers require you to buy extended warranty protection at the point of purchase or before your original warranty ends.

GM Brand Standard Warranty GM Extended Warranty
Chevrolet 3 years/36,000 miles 5 years/60,000 miles
GMC 3 years/36,000 miles 5 years/60,000 miles
Buick (2020 and newer models) 3 years/36,000 miles 5 years/60,000 miles
Cadillac 4 years/50,000 miles 6 years/70,000 miles

GM extended warranty plans are administered through AMT Warranty Corp and can be purchased online or at any Buick, Chevrolet, Cadillac, or GMC dealership. Covered repairs under this vehicle service contract will be done by GM-trained technicians using genuine GM parts.

GM’s Platinum Protection Plan is the highest level of coverage available. It is a bumper-to-bumper limited warranty exclusionary contract. That means it covers every component of your vehicle, minus a short list of exclusions. A Platinum Protection Plan can cover your Buick, GMC, or Chevrolet for up to 5 years/60,000 miles and Cadillac for up to 7 years/60,000 miles. The systems and components covered under this service plan include:

  • Engine
  • Transmission and transfer case
  • Drivetrain
  • Turbocharger/supercharger
  • Steering
  • Air conditioning
  • Electrical
  • Airbags and safety restraints
  • Brakes
  • Seals and gaskets

The GM Platinum Protection Plan also gives GM owners access to 24-hour roadside assistance through the GM motor club. This lets drivers get up to $150 in reimbursement for services such as towing, lockout and battery jumps.

Other GM Vehicle Protection Products

In addition to its standard vehicle service contracts, GM offers a number of add-on coverage options that can further protect your Cadillac, Buick, GMC, or Chevrolet. These include:

  • Guaranteed asset protection (GAP) coverage: Helps pay off your auto loan if your car breaks down and is deemed a total loss
  • Pre-paid maintenance plan: Helps cover the cost of manufacturer-recommended scheduled maintenance
  • Tire and wheel protection: Provides tire repairs and replacements, wheel repairs, and roadside assistance if you get a flat while driving
  • Appearance coverage: Covers external dings and dents, interior fabric, and key fob replacements
  • Coverage for leased vehicles: Offers two levels of protection that cover damage to tires, wheels, the interior, auto glass, and exterior paint

GM Extended Warranty vs. Third-Party Coverage

If the price is right, purchasing coverage through GM may be a great option to protect your Chevrolet, Buick, Cadillac, or GMC. But it’s worth looking into third-party providers, too, as you can typically get cheaper coverage and more flexibility independent of a GM dealer.

The only way to know which option would be better for you is to compare quotes from multiple car warranty providers and see which offers the coverage you need at the best rates.

If you think a third-party warranty may be better for you, you’ll want to get quotes from only the most reputable extended car warranty companies on the market. Companies like Endurance and CARCHEX have a range of warranty policies that may fit your needs. You can read about them in detail in our CARCHEX and Endurance warranty reviews.

  GM Extended Warranty Endurance Extended Warranty
Coverage Start Date After purchasing the vehicle Anytime
Longest Term 60,000 miles 200,000+ miles
Levels of Coverage 2 6
Deductible Varies depending on coverage level $0, $50, $100, or $200
Where to Get Repairs Chevrolet, Buick, GMC, or Cadillac dealerships US or Canadian repair facilities certified by the National Institute for Automotive Service Excellence (ASE®)
Transferability
Cancellation Refund available within 60 days Refund available within 30 days
Roadside Assistance
Rental Car Reimbursement
Availability Purchase from dealerships Get Quote

Final Thoughts: Is a GM Extended Warranty Worth It?

Based on GM vehicles’ inconsistent reliability and above-average chances of needing major repairs, a GM extended warranty is likely worth it for most Cadillac, Buick, GMC, and Chevy drivers.

However, if you assess your vehicle’s reliability and your financial situation and find that you’re comfortable paying out of pocket for common repair costs, you may not need extended coverage.

If you think an extended warranty is the right choice to protect your vehicle, we recommend getting a free quote from GM and comparing it against pricing from third-party providers.

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Methodology

Our review team prides itself on sharing accurate and unbiased information with consumers. We have accumulated data from dozens of extended auto warranty companies to formulate our rankings of the industry’s best providers. Companies receive a score out of 5.0 overall, as well as a rating in each of the following categories:

  • Price: Comparing providers can be difficult due to the many factors that influence cost. To determine this score, we employ a secret shopper analysis using different vehicles, mileages, warranty plans, and locations.
  • Coverage: A wide variety of coverage is essential to support the differing needs of customers. We take into account the number of extended car warranty plans available, term limits, exclusions, and additional benefits.
  • Customer Service: The level of customer service and care provided by an extended warranty company is an important consideration. Our review team sifts through customer reviews and complaints from reputable sources such as the Better Business Bureau (BBB) and Trustpilot. We also consider the responsiveness of each company’s customer service team based on our secret shopper analysis.
  • Reputation: Good extended warranty providers consistently provide quality experiences. Our team takes into account BBB ratings and the company’s history of reliable service when giving this score.
  • Transparency: Customers value a commitment to open and honest communication when it comes to vehicle service contracts. Our team of experts takes into account the availability of money-back guarantees and sample contracts.

 

Q & A

GM Extended Warranty FAQs
Can I buy an extended warranty after purchase?
+
GM is one of the few companies that lets you purchase an extended auto warranty after you've already bought your car. You can even purchase a GM extended warranty after your factory warranty has lapsed.
How much does a Chevy extended warranty cost?
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A Chevy extended warranty from GM will cost between $2,200 and $3,900 depending on your coverage options.
Does GM offer a lifetime powertrain warranty?
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GM does offer a lifetime powertrain warranty on all new vehicles. However, this warranty may not transfer when the car is sold to a new owner.