Chevrolet · Blazer · 2021
2021 Chevrolet Blazer
1
Recall
113
Complaints
5/5
Safety Rating
The 2021 Chevrolet Blazer has 1 recall and 113 owner-reported complaints on file with NHTSA. Overall safety rating: 5 out of 5 stars. Most reported issue: service brakes (13 reports).
Source: NHTSA Public Records · Updated Apr 28, 2026
Research Context
The 2021 Chevrolet Blazer page works best as a research starting point. Complaint totals show how much owner-reported activity exists, while recalls and investigations help show whether any of that activity turned into formal safety action.
Because this is a newer-era vehicle page, it usually helps to compare this year against nearby model years before deciding whether a complaint pattern looks isolated or persistent. On this page, the most prominent complaint area is service brakes with 13 reported complaints.
Best Research Moves
- Use the complaint log to understand what owners were actually reporting instead of relying only on the raw complaint total.
- Review the recall section even if the total is smaller, because a limited number of recalls can still point to meaningful safety actions.
- This page is primarily a complaints-and-recalls research surface, so compare nearby model years before treating the complaint total as a standalone verdict.
Key Takeaways
- The 2021 Chevrolet Blazer currently shows 1 NHTSA recall listed on this page and 113 owner-reported complaints.
- This page currently shows no linked NHTSA investigations.
- This page reflects complaint volume, recall history, and NHTSA test data, but it does not diagnose causes or rank reliability by itself.
- Safety data currently shows 5/5 overall NHTSA safety rating.
- The most frequently reported complaint categories on this page are service brakes (13), electrical system (12), engine (11).
- Vehicle
- 2021 Chevrolet Blazer
- Recalls
- 1
- Complaints
- 113
- Safety Rating
- 5/5
How to Interpret This Page
This page combines three types of NHTSA data: recall campaigns (official manufacturer or government actions), owner complaints (unverified consumer reports), and crash test ratings (where available). A vehicle with many complaints is not necessarily less reliable — complaint volume correlates with sales volume and vehicle age. Recalls indicate identified defects, not overall quality. To compare this model year with others, use the year navigation in the sidebar or return to the model overview page.
If you are researching a used vehicle, start with the complaint categories, compare them against the recall list, and then check nearby model years to see whether the same issue profile repeats. That usually produces a better buying or research signal than treating the raw complaint total as a standalone safety ranking.
NHTSA Crash Test Performance
Frontal Crash Test
Side Crash Test
Overall Frontal Rating
Driver and Passenger Assessment
Driver Side
Passenger Side
Overall Side Rating
Side Barrier and Side Pole Tests
Driver Side
Passenger Side
Rollover Resistance
15.5% rollover risk in single-vehicle crash
Safety Features
ESC: StandardForward Collision Warning: OptionalLane Departure Warning: Optional
Recall Notices
NHTSANHTSA ID: 20V811000December 23, 2020
SEAT BELTS
General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
Remedy Status
GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.
Owner Complaints
113 totalPOWER TRAIN
Apr 23, 2026
The transmission (powertrain) developed a delay when shifting into reverse, followed by harsh engagement. The condition worsened over time and resulted in a complete loss of reverse. The vehicle will not move when shifted into reverse. This creates a safety risk when parking, bac...
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POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Apr 11, 2026
Once I turn the vehicle off, there is a loud sound coming from the engine area that sounds like a fan. Then the first incident of the fan ongoing after the vehicle was powered off, a battery light was on the internal driver dashboard and stayed on. The battery was recently replac...
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ENGINE
Apr 7, 2026
The vehicle had an oil leak from both the left and right camshaft carriers. The dealer confirmed the issue and carried out the necessary repairs. Because the leak was not easily detectable, it could have led to engine failure while driving. There were no warning indicators; only ...
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POWER TRAIN
Mar 9, 2026
My 2021 Chevy blazer Lt v6, has a service bulletin extending warranty on thermostat malfunction, that also causes the fans to run after the car is off. My vechicle was experiencing this issue, went into my local dealer, they claim thats not my issue, I need a new radiator, that...
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UNKNOWN OR OTHER
Feb 19, 2026
At 48,000 miles, check engine light came on and loud fan sound continued after turning car off. Took car to dealership where I was informed I needed a new radiator and it is not covered by warranty.
PARKING BRAKE
Feb 18, 2026
The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the vehicle with several unknown warning lights illuminated. The contact stated that the electronic parking brake independently activat...
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ENGINE
Feb 7, 2026
The 2021 GMC Blazer (and related Chevy Blazer models) is experiencing recurring radiator failures, often requiring multiple replacements within short timeframes. The radiator was replaced in March 2024 and in early 2025 I went for an oil change and complained of smelling coolant...
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POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Jan 7, 2026
Around 55,000 miles, my 2021 Chevrolet Blazer experienced a throttle body failure. The check engine light illuminated and the vehicle entered a reduced power/limp mode condition. Throttle response was significantly limited, and the vehicle could not accelerate normally. While the...
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POWER TRAIN,ELECTRICAL SYSTEM,ENGINE
Jan 7, 2026
This submission is an additional report related to NHTSA complaint #11714381. At approximately 55,000 miles, my 2021 Chevrolet Blazer experienced a sudden throttle body failure while driving. The vehicle entered reduced engine power/limp mode without warning and acceleration was...
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POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE
Dec 13, 2025
For about a week and a half my car had made a high pitched wheezing/hubbing sound when started cold. This occurred at all temperatures cold and warm. Yesterday December 13th I went to run some errands and about a mile into my drive my 2021 3lt 3.6 V6 Chevrolet Blazer lost the abi...
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Showing 10 recent complaints from 113 total
View Full Complaint LogCompare Related Vehicles
Why Compare These Pages
The strongest comparison flow is usually: exact vehicle-year page, then nearby years of the same model, then other 2021 Chevrolet models. That sequence helps separate one-off year spikes from broader make-wide patterns.
More Chevrolet Blazer Years
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Frequently Asked Questions
How many recalls does the 2021 Chevrolet Blazer have?
The 2021 Chevrolet Blazer has 1 recall recorded by NHTSA.
How many complaints have been filed for the 2021 Chevrolet Blazer?
NHTSA has received 113 owner-reported complaints for the 2021 Chevrolet Blazer.
What is the NHTSA safety rating for the 2021 Chevrolet Blazer?
The 2021 Chevrolet Blazer received an overall safety rating of 5 out of 5 stars from NHTSA.
What are the most common problems with the 2021 Chevrolet Blazer?
The most commonly reported complaint categories for the 2021 Chevrolet Blazer are service brakes (13 reports), electrical system (12 reports), engine (11 reports).
Does the 2021 Chevrolet Blazer have any recalls?
Yes. NHTSA has 1 recall on record for the 2021 Chevrolet Blazer. Scroll up to review the published recall summaries, consequences, and remedies. To check for unrepaired recalls on your specific vehicle, use your VIN at nhtsa.gov/recalls.
Check Another Vehicle
Look up recalls and complaints for any year, make, and model.
This page summarizes publicly available data from the National Highway Traffic Safety Administration (NHTSA). Complaint counts reflect reports submitted to NHTSA by vehicle owners and do not by themselves prove defect severity or vehicle safety. Safety ratings may not be available for all vehicle-years. This site is not affiliated with NHTSA or any vehicle manufacturer. For official information, visit the official NHTSA page for this vehicle.