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2020 Chevrolet Blazer problems: engine and transmission complaints and recalls
61% of relevant owner complaints filed with NHTSA on the 2020 Chevrolet Blazer are about the engine, transmission or fuel system. Well over half of everything owners reported is the drivetrain. That is a severe model-level pattern; every model year we track at this level has a documented failure behind it.
Worse than 82% of the 1,790 model years we track (2010–2023).
Does the 2020 Chevrolet Blazer have transmission problems?
Owner complaints say yes, heavily, as a model-year pattern. 132 of 220 relevant complaints filed with NHTSA about the 2020 Chevrolet Blazer concern the engine, transmission or fuel system (61%), and the largest group is filed under power train (73). For comparison, the 2019 scores 53% and the 2021 scores 50%. On a test drive, check for shuddering, slipping, delayed or harsh shifts, or a whine at speed. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2020 compares with other Chevrolet Blazer years
Of the 5 Chevrolet Blazer years with enough complaints to score, the 2020 is the worst on engine and transmission share (61%). The best is the 2021 (50%). By volume, the 2020 drew 220 complaints (132 drivetrain), against 186 for the 2019 and 136 for the 2021.
Chevrolet Blazer years to avoid and best years →
2019 Blazer problems · 2020 · 2021 Blazer problems · 2022 Blazer problems · 2023 Blazer problems
The rest of the picture on the 2020 Chevrolet Blazer
- The mileage where it happens. When owners of the 2020 Chevrolet Blazer said the problem showed up, and the range most of them fell in.
- What the repair costs. Typical transmission repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 132 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
2020 Chevrolet Blazer transmission recalls
Yes. NHTSA lists 1 recall campaign on the 2020 Chevrolet Blazer involving the engine, transmission or fuel system, out of 3 in total. A recall is the manufacturer admitting a defect and paying to fix it; whether a specific car still has one open depends on its VIN, which the full report checks. The owner complaints above are a separate record and often point at problems that never became a recall.
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
Risk: Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an…
Fix: GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer…
2 other recalls on this model year (airbags, lighting, brakes and the rest)
Source: NHTSA recall campaigns filed against this year, make and model. Checked October 3, 2026.
Checking one particular 2020 Chevrolet Blazer? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
Get a history report from EpicVIN Before you pay: EpicVIN’s $1 offer is a 3-day trial (up to 5 reports) that renews at $49.99 a month unless you cancel. Other plans are listed under “View all our packages” at checkout. We may earn a commission if you buy through this link. It does not change what this page reports.Questions people ask about the 2020 Chevrolet Blazer
Does the 2020 Chevrolet Blazer have transmission problems?
Owner complaints say yes, heavily, as a model-year pattern. 132 of 220 relevant complaints filed with NHTSA about the 2020 Chevrolet Blazer concern the engine, transmission or fuel system (61%). Before buying one, have an independent mechanic check the transmission and ask the seller whether it has been repaired or replaced.
What is the most common problem with the 2020 Chevrolet Blazer?
Going by NHTSA owner complaints, the most common problem filed against the 2020 Chevrolet Blazer is electrical system: 76 of 220 complaints (35%) name it, followed by power train (73) and engine (69). A complaint can name more than one component, so these overlap. Engine, transmission and fuel-system complaints together make up 61% of the relevant total.
Is the 2020 Chevrolet Blazer reliable?
On the engine and transmission, owner complaints point to a weak spot: 61% of relevant complaints filed with NHTSA concern the drivetrain (very high signal). That is worse than 82% of the 1,790 model years we track. Among the 5 Chevrolet Blazer years we score, it ranks worst. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2020 Chevrolet Blazer?
Yes. NHTSA lists 1 recall campaign on the 2020 Chevrolet Blazer involving the engine, transmission or fuel system, out of 3 in total: 20V668000 (power train: automatic transmission). Whether a specific car still has one open depends on its VIN.
Which Chevrolet Blazer years are better?
Among the Chevrolet Blazer years we track, the 2021 (50%), the 2019 (53%) and the 2023 (58%) have a lower engine and transmission complaint share than the 2020 (61%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/chevrolet-blazer
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Check a VINExperimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.