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Chevrolet · NHTSA safety record

2021 Chevrolet Blazer

Every safety complaint, recall and defect investigation the US government holds on this vehicle.

125

Complaints

6

Crashes

1

Fires

7

Injuries

0

Deaths

Owners of the 2021 Chevrolet Blazer have filed 125 safety complaints with NHTSA between March 2021 and July 2026. The most complained-about system is the electrical system, named in 37 of them (30%). The typical failure was reported at 34,980 miles, the median across the 23 complaints that gave an odometer reading.

Complaints more than doubled year on year: 56 in the twelve months to 2026-Q1, against 23 in the twelve before.

NHTSA has issued 1 recall covering this vehicle.

Recalls (1)

SEAT BELTS

20V811000 · December 23, 2020

The defect
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.
The risk
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.
The 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.

General Motors, LLC · up to 470 vehicles across all model years covered

What owners report

Complaints naming each system. One complaint can name several, so these add up to more than 125.

ELECTRICAL SYSTEM 37 30%
ENGINE 36 29%
UNKNOWN OR OTHER 20 16%
POWER TRAIN 18 14%
SERVICE BRAKES 18 14%
FUEL/PROPULSION SYSTEM 16 13%
STEERING 15 12%
FORWARD COLLISION AVOIDANCE 7 6%
SUSPENSION 4 3%
TIRES 4 3%
LANE DEPARTURE 3 2%
AIR BAGS 2 2%

When the complaints arrived

By the year NHTSA received them, which is not the year the failures happened. They peaked in 2025 at 60.

2021 2025 2026
2021 to 2026, the last of them a part year

In owners' own words

Quoted from NHTSA's complaint file. These are unverified accounts by the people who filed them, not findings of fault.

SUSPENSION

3 injured · crash · towed

Driving on straight road going speed limit. Heard a pop behind me like a tire pop. Car fish tailed uncontrollably and ended up crashing into a Ranch Fence on the right side of the road. 2 of my kids and myself had injuries. When we got off the vehicle witnesses and I saw A rear link broken which keeps the tires straight.

NHTSA complaint 11737304. Filed by an owner and not verified by NHTSA or by us.

STEERING

1 injured · crash · towed · 24,000 miles

The contact owned a 2021 Chevrolet Blazer. The contact stated while driving 69-70 MPH, the steering wheel strongly pulled to the left side and into the roadway median. There was no warning light illuminated. The contact stated that the vehicle hit the median and bounced, facing incoming traffic. The contact slammed on the brakes and shifted into park (P). The air bags deployed. The contact was able to exit the vehicle with the assistance of bystanders. Emergency services arrived at the scene but the contact was not transported to the hospital at the time. The contact later received medical assistance and was informed she had sustained soreness on the neck, shoulders and bruises all over the

NHTSA complaint 11539220, quoted in part. Filed by an owner and not verified by NHTSA or by us.

SUSPENSION

1 injured · crash · towed

The Esc display came up then sutbality sensor show and my back wheel went right. My car flipped twice and then landed on the guardrail.

NHTSA complaint 11539221. Filed by an owner and not verified by NHTSA or by us.

AIR BAGS

1 injured · crash · towed · 36,463 miles

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

NHTSA complaint 11700607, quoted in part. Filed by an owner and not verified by NHTSA or by us.

AIR BAGS

1 injured · crash · towed · 52,661 miles

The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at approximately 50 MPH, the vehicle struck a deer, causing severe damage to the vehicle's front end. The contact stated that smoke was coming from the center of the steering wheel; however, the vehicle's air bags had not deployed. The contact was transported to the local hospital and treated for chest injuries. The vehicle was towed to a local collision center. No further information was available. A Police report was filed at the scene. The cause of the failure was not yet determined. The local dealer and manufacturer were not yet contacted. The failure mileage was 52,661.

NHTSA complaint 11753752. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN

towed · 100,000 miles

The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, and the transmission was slipping gears before the vehicle lost motive power. The contact stated that the vehicle failed to drive forward or move while in reverse. The check engine warning light was illuminated. The vehicle was towed to the residence. The contact, who was an independent mechanic, diagnosed the failure as a clutch solenoid failure. The contact stated that the transmission needed to be replaced. The vehicle was not repaired. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the

NHTSA complaint 11751752, quoted in part. Filed by an owner and not verified by NHTSA or by us.

FUEL/PROPULSION SYSTEM
XXX the car had gas, turned over, but would not start. I had it towed to a repair center who towed, did diagnostics and came up with the codes for a bad fuel pump control module. It was replaced and the car starts. There was no warning. Problem was confirmed by an independent service center. All documentation is available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint 11749347. Filed by an owner and not verified by NHTSA or by us.

FUEL/PROPULSION SYSTEM
fuel pump control module failed at 26000. recall number N252516900. This is a recall that other 2021 blazers have ben part of. Over 300000 recalls so far. GM says my car isn't. Ridiculous. They dont want to acknowledge their fault. I need a formal statement that this module should be recalled for my car.

NHTSA complaint 11749371. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN
The thermostat malfunctioned causing an error message regarding “steering assist is reduced”. When I parked and turned off, the engine fan continued to run. When car was restarted, the temp gauge inside was stuck at C. Took to dealership and they assessed. They repaired the thermostat under power train warranty, however there was a crack in the radiator (top) resulting in the need for a new radiator. This vehicle had 35,000 miles on it. Upon research online, it seems there are MANY people who have had this same issue and worse. It appears cars produced during COVID era are most affected. Chevy refused to warranty the issue. The dealership offered a small cost reduction (due to our loyalty).

NHTSA complaint 11745926, quoted in part. Filed by an owner and not verified by NHTSA or by us.

LANE DEPARTURE: ASSIST
The thermometer and thermometer sensor are glitching . The engine temp needle will not rise at all, the engine fan will run the whole time driving and then when it is turned off will run for 10 min . Right before this happens a notice shows the guided steering is being limited. I disconnected the battery and it reset , I drove and there were no issues , next time I started my car the engine temp needle stayed down and the van started again. This car has 36k miles on it. I just bought it 2 days before it started happening

NHTSA complaint 11745573. Filed by an owner and not verified by NHTSA or by us.

Compare

Other years of the Chevrolet Blazer

Model year Complaints Recalls Deaths
2025 26 1 —
2024 42 1 —
2023 41 2 —
2022 46 1 —
2020 211 3 —
2019 183 2 —

Other 2021 Chevrolet models

Silverado 1500 782 Tahoe 432 Trailblazer 189 Suburban 184 Equinox 89 Traverse 86 Malibu 85 Silverado 2500 84

Every Chevrolet on this site — 298 vehicles, 747 recall campaigns and 5 open investigation s.

If this is your car and a dealer keeps failing to fix it, your state's lemon law may require the manufacturer to replace it or buy it back. What each state asks for , read from the statutes.

Where these numbers come from

A complaint is one owner's account and has not been verified by NHTSA or by us. A vehicle with more complaints is not necessarily worse: models that sold in larger numbers collect more of them. How this is counted.

Compiled and maintained by
Independent developer and analyst