Chevrolet Blazer electrical problems, 2019–2027
240 of the 810 complaints owners filed with NHTSA about the Chevrolet Blazer 2019–2027 name the electrical system (NHTSA’s “Electrical System” heading — wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading). The loudest years: 2020 (76), 2019 (59), 2021 (39). Filed under the same heading across these years: 1 recall campaign. Every figure is a linked federal record; none is a failure rate, none a repair cost, and none a verdict on one car.
Chevrolet Blazer electrical problems by model year
Source: NHTSA complaints, recalls, investigations and manufacturer communicationsOne row per model year on file, newest first. A year marked in depth has its own page: the complaints, the owners’ words and every document under this heading for that year.
| Model year | Complaints naming the electrical system | Share of the year’s | Typically at | On file under the heading | |
|---|---|---|---|---|---|
| 2027 | 0 | — | — | — | the year → |
| 2026 | 0 | — | — | 10 TSBs | the year → |
| 2025 | 13 | 25% | — | 106 TSBs | the year → |
| 2024 | 29 | 23% | — | 315 TSBs · 1 recall | the year → |
| 2023 | 7 | 16% | — | 163 TSBs | the year → |
| 2022 | 17 | 33% | — | 192 TSBs | the year → |
| 2021 | 39 | 29% | — | 195 TSBs | the year → |
| 2020 in depth | 76 | 35% | — | 208 TSBs | the record → |
| 2019 in depth | 59 | 32% | — | 181 TSBs | the record → |
Two things the counts carry that are not the car: how many of each year were sold, and how long each has been on the road — an older year out-counts a newer one before anything is wrong with it. The share column is the honest comparison across years: what part of that year’s complaints named the electrical system. Nothing here is a rate.
When the electrical complaints were filed, and at what mileage
Source: NHTSA complaint databaseFiled per calendar year, every model year together: 2019: 1 · 2021: 9 · 2022: 15 · 2023: 20 · 2024: 42 · 2025: 93 · 2026: 60
Across the model years, half of the 18 owners who gave an odometer reading reported the electrical problem between 10,000 and 58,000 miles. A median of reports, not the life of a part.
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the electrical system, from the model years with the most to say. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
When I put the car in park it does not register and will not come out of accessory more. This is a known issue and gm is making customers out of warranty pay for it
Esc message on dashboard & all wheel drive disabled & lane assist traction control liggt turns on & parking brake light turns on while driving caused for my electric component to act all crazy including my sunroof I’ve been in the dealer over over try to fix it and that is concerning reason for my safety while u are driving and all those…
when I put it in parking it does not recognize and the car is unable to turn off
Shift To Park message displays while vehicle is already in Park! Incident began increasing in frequency in late 2022 . Vehicle would not Shut Off! Bulletin on problem came out in 2019, Chevy did not inform me of this Safety issue , Grandchildren in vehicle at least 2 times .
This is re: dash warning that came on saying "Action Required, Steering Assist is Reduced, Drive with Care" on 2021 Chevy Blazer, 28.800 miles. First happened 1/15/25 & each time car is started it is on now, plus the Check Engine light is on now. The fan of the motor runs for 5-10 minutes once car is shut off also.
What is on file about the electrical system, across the years
Source: NHTSA recalls, investigations and manufacturer communicationsRecall campaign filed under this heading, any model year
- 24V320000 HighMay 9, 2024 · 10 vehicles
- General Motors, LLC (GM) is recalling certain 2024 Cadillac Lyriq, Chevrolet Blazer EV, Chevrolet Silverado EV, GMC Hummer EV SUV, and GMC Sierra EV vehicles. The electric motors in the rear drive units may have insufficiently insulated wires that can contact each other, resulting in a loss of drive power.
Other systems with a record on the Chevrolet Blazer
Source: the same filesEvery system, every model year: Chevrolet Blazer problems by year →
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsWhich Chevrolet Blazer years have the most electrical complaints?
2020, 76; 2019, 59; 2021, 39. Raw counts, and an older year has had longer to collect them; by share of each year's own complaints the loudest is the 2020 (35%).
Is there a recall for the electrical system on the Chevrolet Blazer?
Yes — one campaign is filed under this heading across these model years: 24V320000 (2024). A recall is matched by VIN, and applies to specific years; check yours at nhtsa.gov/recalls.
When do electrical problems show up on the Chevrolet Blazer?
Owners who gave an odometer reading reported it at a median of 34,980 miles across the model years; half of them between 10,000 and 58,000. That is when reports cluster, not the life of a part.
What does NHTSA's "Electrical System" heading cover?
Wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.