2021 Chevrolet Blazer Problems, Complaints & Recalls

Source: NHTSA · Updated Oct 9, 2026 · 137 owner complaints analyzed

Compared with other Blazer years
More complaints than other years 11th of 22 for complaints
NHTSA crash rating
5 out of 5 stars

Owners have filed 137 complaints with NHTSA about the 2021 Chevrolet Blazer. That ranks 11th out of 22 Blazer model years for complaints. The most reported problem area is engine (42 complaints, 31%), typically at around 32,000 miles. Complaints mention 6 crashes, 1 fire, 7 injuries. There is 1 safety recall covering this model year.

Complaints are unverified owner reports and are not adjusted for sales volume.

Compare with another car

Most common 2021 Chevrolet Blazer problems

Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.

Engine42 · ~32,000 mi
Electrical System39 · ~38,000 mi
Unknown or Other21
Service Brakes19 · ~400 mi
Power Train18 · ~84,000 mi
Fuel/propulsion System17
Steering15 · ~24,000 mi
Forward Collision Avoidance7 · ~4,400 mi
Tires5 · ~20,000 mi
Suspension4 · ~34,980 mi
Problem areaComplaintsShareMedian milesOwners mention mostTypical repair cost
Engine4231%32,000——
Electrical System3928%38,000——
Unknown or Other2115%———
Service Brakes1914%400——
Power Train1813%84,000——
Fuel/propulsion System1712%———
Steering1511%24,000——
Forward Collision Avoidance75%4,400——
Tires54%20,000——
Suspension43%34,980——
Engine and Engine Cooling32%63,000——
Lane Departure32%———
Air Bags21%44,562——
Structure21%———
Wheels21%———
Back Over Prevention11%———
Equipment11%———
Exterior Lighting11%———
Fuel System, Gasoline11%81,123——
Parking Brake11%31,000——
Seats11%———
Service Brakes, Hydraulic11%120,000——
Traction Control System11%4,400——
Vehicle Speed Control11%———

One complaint can list several problem areas, so shares can add up to more than 100%.

Complaints by year received

Peak: 2025, with 60 complaints
2021: 112021112022: 4202242023: 122023122024: 142024142025: 602025602026: 36202636

n = 137 complaints · Source: NHTSA

2021 Chevrolet Blazer recalls (1)

Tap a recall to see the problem, the risk and the fix.

Seat belts:critical fastenersDec 23, 2020 · NHTSA campaign 20V811000 · 470 vehicles

Problem: 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.

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.

Fix: 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.

To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.

Recent owner reports

Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.

Steering assist reduced light came on, fan kept running after shutting off, brought to dealer to see if it was covered under the gm special coverage for thermostat, they say the radiator needs to be replaced for a leak. I looked it was leaking a bit on the top driverside corner, not actively…

Unknown or Other · received Oct 9, 2026 · NHTSA complaint 11770208

The main instrument cluster where the speedometer and fuel gauge etc etc reside went blank during operation of the vehicle. I wasn't able to pull over safely until my destination was reached. Restarting the car seemed to "solve" the issue.

Electrical System · received Oct 1, 2026 · NHTSA complaint 11768271

The contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed and making a turn, the vehicle lost braking functionality. The brake pedal was depressed to the floorboard. After exiting the vehicle, the contact became aware of a fluid leak underneath the…

Service Brakes, Hydraulic · received Sep 30, 2026 · NHTSA complaint 11768040

My 2021 Chevy blazer is leaking oil at 70,000 miles Chevy only recalled under special warranty for camshaft carrier it appears Chevy put in a glue for them seals that comes off unfortunately they don’t recall all blazers just some but I am having the same issue as that special warranty. It’s a…

Engine · received Sep 26, 2026 · NHTSA complaint 11767069

Vehicle Information: 2021 Chevrolet Blazer 2.5L engine, VIN [XXX]. Odometer 118000 miles.Description of Incident: While operating the vehicle, the mechanical brake vacuum pump experienced a catastrophic internal failure. The drive gear housing shattered violently without warning, shearing off the…

Engine · received Sep 17, 2026 · NHTSA complaint 11764895

Other Chevrolet Blazer years

← 2020 Blazer · 2022 Blazer →

See all Chevrolet Blazer problems by year, every Chevrolet model, or the Chevrolet VIN decoder.

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Frequently asked questions

What are the most common problems with the 2021 Chevrolet Blazer?

Owners most often report engine, electrical system, unknown or other problems. The top one, engine, accounts for 42 complaints.

Was there a recall on the 2021 Chevrolet Blazer?

Yes, 1 safety recall. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.

Was the 2021 Chevrolet Blazer a good year?

Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Blazer model years, the 2021 has more complaints than most years, and NHTSA rates it 5 out of 5 stars overall in crash tests. Always get a pre-purchase inspection and check the VIN for open recalls.