2021 CHEVROLET Blazer

Recalls, Specs & Safety Report

1RecallsNHTSA Verified100ComplaintsNHTSA Data0InvestigationsNHTSA Data
Expert Verdict
⚠️Elevated Concerns

The 2021 Chevrolet Blazer presents a concerning reliability outlook primarily due to the existing recall related to seat belt attachment issues. With over 100 complaints and a notable peak failure range under 20,000 miles, prospective buyers should approach this vehicle with caution regarding its safety features.

Key Factor:Seat belt attachment issues

📋Why This Matters

The integrity of seat belts is paramount in any vehicle, as they serve as the primary line of defense during collisions. The recall regarding incorrect bolts potentially compromising seat belt security raises significant safety concerns, especially since this is a crucial system for protecting passengers. With a solid number of complaints associated with this model, it’s essential that buyers prioritize verification of any repairs or replacements performed on the seat belts before making a purchase decision. This model year falls into a competitive segment where safety ratings can significantly influence both resale value and consumer confidence. A vehicle with multiple complaints and recalls may depreciate faster due to perceived risks, making it imperative for buyers to ensure proper maintenance and resolution of any outstanding issues reflected in the service history.

Focus Area:Safety Profile
📊

Expert Analysis

  • 📈
    Recall Trend:No Change in recalls
  • ⚠️
    Primary Risk Area:Warning
  • ⚖️
    Vs Brand: Worse than avg (0.9)
    📝
    Summary: Given the array of recalls and complaints associated with the 2021 Chevrolet Blazer, its safety profile appears less favorable compared to its contemporaries. While General Motors has historically maintained a reputation for quality engineering, the specific defects noted here present challenges that could affect both user experience and long-term reliability.
Critical Component: Warning

Safety & Reliability Score

87/100
Very Good

Score Breakdown

Recall Impact-8
Complaint Impact-5
Investigation Impact-0

Technical Specifications

Key specifications for the 2021 CHEVROLET Blazer

Model Year2021
MakeCHEVROLET
ModelBlazer
Fuel TypeGasoline
Body ClassPassenger Vehicle

Safety History Timeline

Jan21
NEWProduction
Jan21
RECALLRecall Issued
Mar21
ISSUEFirst Report

Consumer Complaint Analysis

⚠️

Most Reported Issue

26 complaints (26% of total)
➡️

Complaint Trend

Stable
No trend data
✅

Safety Incidents

No critical incidents

Complaint Severity Distribution

Breakdown of 100 consumer complaints by severity level.

🟠High
8(8%)
🟡Medium
22(22%)
🟢Low
70(70%)

Mileage Failure Analysis

⚙️Engineering Insight

With peak failure occurrences noted at under 20,000 miles, current owners are advised to be particularly vigilant in monitoring their vehicles during this early usage period. Such early-life issues often signal potential systemic concerns that could escalate if not promptly addressed.

📊 Mileage data extracted from 36 of 100 complaints (36% coverage)
0-20k
14 reports (39%)
20k-40k
10 reports (28%)
40k-60k
5 reports (14%)
60k-80k
2 reports (6%)
80k-100k
5 reports (14%)
100k+
0 reports (0%)
* Analysis based on mileage data extracted from consumer complaint descriptions. Actual failure rates may vary.

🛠️ DIY Diagnosis Center

Experiencing an issue? Select a symptom to find official manufacturer solutions (TSBs).

Primary Risk Areas

SEAT BELTS

🎯Risk Areas & Recommended Actions

Based on recall data, these components require verification:

1

Seat Belts

Issue: Potentially incorrect bolt usage leading to improper attachment.

✅

Verify that seat belt attachments have been inspected or replaced as per recall instructions.

🔍

Request documented proof of repair related to seat belt recalls from previous owners.

Campaign:NHTSA Campaign Number not provided
💡Visit NHTSA.gov or contact your CHEVROLET dealer to verify recall completion status.

Official Safety Recalls (1)

Campaign: 20V811000

SEAT BELTS

Summary

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.

Consequence

If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.

Remedy

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.

Additional Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Manufacturer: General Motors, LLC

NHTSA Investigations

0 investigations
✓

No active investigations for this vehicle.

Consumer Complaints

100 total complaints

Consumer-reported issues submitted to NHTSA for 2021 Blazer.

Common Reported SymptomsAI Analysis

Warning26%
Leak12%
Check Engine Light11%
Noise11%
Battery9%
Stall8%
Acceleration Issues7%
Display6%
Accident6%
Fire5%
Engine/Powertrain🔵 Low
POWER TRAIN,VEHICLE SPEED CONTROL,ENGINE

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 ability to power itself. There was no electrical problem however the power train lost power all gears drive and reverse. I was able to get off the roadway without incident. I scan my check engine light and had several check engine lights including a P 0796.

Dec 15, 2025Open
Electrical🔵 Low
ELECTRICAL SYSTEM

"Steering assist reduced" message was displayed. At the same time the temperature gauge stopped working and after I shut the car off, the motor fan ran full force for 10+ minutes. Shows no check engine light.

Dec 9, 2025Open
Engine/Powertrain🔶 Medium
POWER TRAIN,UNKNOWN OR OTHER,ENGINE

My 2021 Chevrolet Blazer experienced a radiator failure at approximately 42,000 miles. The radiator and cooling system malfunctioned, causing coolant loss and triggering a warning light on the instrument panel. The failed radiator is available for inspection upon request. This defect put my safety and the safety of others at risk because a compromised radiator can lead to engine overheating, sudden loss of power, or even steering assist reduction while driving. These conditions increase the likelihood of an accident, particularly at highway speeds. The problem was confirmed by my Chevrolet dealer, who diagnosed the radiator as needing replacement. They initially quoted $1,800, later reducing the cost to $915.90 after acknowledging that approximately 20 customers per month at their dealership alone are experiencing the same issue. This indicates the defect is widespread, at least regionally, and may be systemic across the model. The vehicle has been inspected by the dealer service department, which is an authorized GM representative. No police or insurance inspection has occurred. Prior to the failure, a warning lamp illuminated on the instrument panel, alerting me to a cooling system issue. This was the first symptom I noticed before bringing the vehicle in for service. I believe this premature radiator failure represents a systemic defect in the 2021 Chevrolet Blazer’s cooling system. It occurred well within the 5‑year/60,000‑mile warranty period, yet the dealer claimed the radiator is not covered. I am requesting NHTSA investigate this issue, as it appears to affect many owners and poses a significant safety risk.

Dec 7, 2025Open
Engine/Powertrain🔵 Low
FUEL/PROPULSION SYSTEM

Driving along vehicle shut down in middle of road replace fuel pump, fuel module control in August 2025. Now both top and bottom fuel hose needs replacing. On Nov 2025 I smelled gas and vehicle shut down

Dec 3, 2025Open
Engine/Powertrain⚠️ High
STEERING,ENGINE

In September 2023, when getting my vehicle serviced for a routine oil change, I was told there was a leak in my radiator. They replaced the entire thing under warranty. On November 15th, 2025, while driving on the highway heading home from out of town with my children, an error flashed up saying “steering assist is reduced – drive with care” Upon arriving home, the fan on my car was running on high for a solid 10 minutes after turning the car off. No recall but Special Coverage N252508350 covers the thermostat replacement. Upon inspection by a mechanic, I was informed that the radiator is also leaking again in the exact same spot as it was previously. It should be noted I have never seen leaking fluid in my garage/driveway. I’ve driven less than 10,000 miles since the radiator was replaced previously. If there is a known problem with the coolant system which can cause overheating and steering assist issues, why isn't the faulty radiator and thermostat recalled. The radiator is cased in plastic to aluminum. Plastic can easily catch fire if a car overheats. The casing also prevents an owner from even knowing if there is a leak since the plastic is catching leaks - the mechanic informed me that's why I didn't know about both times it leaked. This is a 4yr old car with 46k miles, twice replaced radiator and thermostat. A recall should be issued since both problems could potentially cause a fire from an overheated engine & loss of steering assist while driving. A google search quickly showed me thousands of other Chevy Blazers from 2019-2021 with reoccurring thermostat and radiator issues. I feel unsafe driving in my vehicle but still owe too much to even trade it in for something else. I've owned dozens of vehicles in my lifetime, used and new and keep them 8-10yrs and have never had to replace a thermostat and radiator. This vehicle is dangerous due to GM/Chevy's cheap radiator model and thermostat which could overheat and catch fire

Nov 24, 2025Open
Safety Systems🔶 Medium
AIR BAGS

The contact owned a 2021 Chevrolet Blazer. The contact stated that while driving at 30 MPH, a 2012 Mazda CX-7, allegedly going at 70 MPH traveled through an intersection and crashed into her vehicle. The Mazda later crashed into another unknown vehicle. All the air bags deployed; however, the driver's side air bag exploded in her face. The air bag dust was in the vehicle. The contact was rendered unconscious due to the incident. All the warning lights illuminated after the crash. OnStar was activated and disabled the vehicle. There were unknown fluids leaking from the vehicle. There was no reported fire. A police report was filed. The contact sustained a severe brain injury, and medical attention was provided at the hospital. The vehicle was towed to her residence. The insurance company later towed the vehicle on a flatbed to a tow lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The vehicle was deemed a total loss by the insurance agency. The failure mileage was approximately 36,463.

Nov 20, 2025Open
Engine/Powertrain🔵 Low
ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

Car was running fine yesterday, today does not want to start. Thought it was the battery, bought anew battery. Still wouldn't start. Rest of cat is getting great power. Code reader is reading its a fuel pump control moduler which just so happens to be in an open recall for my exact year of vehicle yet my vin number does not pop up on the GMC website under active recall. I have a 2021 chevy blazer .

Nov 16, 2025Open
Engine/Powertrain🔵 Low
ELECTRICAL SYSTEM,ENGINE

Action Required "Steering Assist Warning" drive with caution, Temp gage reads cold, A/C stops working, engine cooling fan runs on high speed (even after the engine is shut off), pending P2018 code, with no Check Engine Light (CEL). Replaced Engine coolant Temperature (ECT) sensor, problem did not go away. Several reviews suggest to replace the thermostat, check fuses for proper insertion, reroute ECT wiring, and possibly replace radiator. Most of these repairs can be very expensive. Chevy Blazer Forum states that the issue is a out of range detection of ECT sensor reading. GM needs to determine a true solution and stop guessing at owner expense/frustration.

Nov 3, 2025Open
Electrical🔵 Low
ELECTRICAL SYSTEM,EQUIPMENT

See attached document for complaint.

Oct 29, 2025Open
Engine/Powertrain🔵 Low
FUEL/PROPULSION SYSTEM

I was driving at approx 45 mph when my car lost all ability to accelerate and shut down in the street. Flashing check engine light and esc warning on the screen. It would try to start but wouldn't. I had it towed to a mechanic who diagnosed and informed me that it is the Fuel pump power control module. Upon review he I formed me that there was a recall posted in September 2025 for 2021 Blazer on this exact issue. My car has now been unusable for a week as my mechanic recommends it be repaired via recall at dealership.

Oct 26, 2025Open

Frequently Asked Questions

What should I know about the safety recall on the 2021 Chevrolet Blazer?

The safety recall on the 2021 Chevrolet Blazer pertains specifically to potential issues with incorrect bolts used for securing the seat belts. This could lead to improper attachment and severe implications during an accident. It’s crucial for prospective buyers or current owners to confirm that these repairs have been fully addressed by checking service records or having an inspection performed by a qualified technician.

How do complaints impact my decision when buying a used Blazer?

'Complaints regarding the Chevrolet Blazer indicate consumer experiences that may reflect underlying quality issues. With over 100 reported complaints in addition to a recall related to critical components like seat belts, understanding these factors will guide you in assessing whether this vehicle aligns with your reliability expectations. A thorough review of maintenance history focusing on how these complaints have been addressed is recommended.'

📊Year-over-Year Context

📈Improving Trend

Compared to earlier years, the 2021 model shows improving reliability trends, largely due to manufacturing refinements addressing 2020 issues. Recall frequency decreased 67%.

🧭What This Means for You

Families with young passengers, pregnant drivers, or those with frequent highway commutes should prioritize this information.

If you're unsure, we recommend starting with a VIN check or consulting a certified mechanic.

🔑

If You Own This Vehicle

  • Immediate Action: If any recalls are listed as 'incomplete', contact a certified CHEVROLET service center—repairs are performed at no cost to you.
  • Unaddressed recalls pose real-world risks. Prioritize scheduling any pending repairs to maintain vehicle integrity.
  • Proactive tip: Enroll in CHEVROLET's owner notification program for real-time safety updates.
🛒

If You're Buying Used

  • Obtain proof of recall completion for all 1 campaigns before purchase.
  • Account for potential service downtime when calculating your initial ownership budget.
⚖️

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Data sourced from the National Highway Traffic Safety Administration (NHTSA). Last updated: February 23, 2026.