2021 Chevrolet Blazer problems
Owners have filed 195 complaints about the 2021 Chevrolet Blazer with NHTSA. Electrical system accounts for 19.5% of them — narrowly the most common, ahead of engine at 18.5%.
Complaints195
Crashes7
Fires3
Injuries8
Deaths0
What owners report breaking
Electrical system 19.5% · 38
Engine 18.5% · 36
Unknown or other 10.3% · 20
Power train 9.2% · 18
Service brakes 9.2% · 18
Fuel/propulsion system 8.2% · 16
Steering 7.7% · 15
Forward collision avoidance 3.6% · 7
Severity
Of those complaints, 7 describe a crash, 3 describe a fire and 8 report an injury.
Reading the numbers
Across the 16 model years of the Chevrolet Blazer in this data, 2021 draws comparatively few complaints; 1995 is the outlier year.
Filings are rising — 155 in the last three years against 40 in the three before. For a vehicle this age that usually points to a wear-related failure owners are hitting now.
The median odometer reading at the time of complaint was 34,980 miles.
In owners' own words
Vehicle now has about 1200 and when driving, the instrument cluster panel that digital shows your speed, odometer and other information on my vehicle went blank. It is just a black screen. When this happened, it caused the steering wheel controls for radio volume and turning the station to not work. With this, I have no safety features like lane assist now and can't tell my tire pressure. Electrical system
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 replaced during 2026 so the battery should not be anywhere near dead, dying, or needing to be checked Electrical system
Headlights flash or stay on either low or hi beam,hatch opens itself, awd poping, noise in dash, shifting into awd by itself, transmission not shifting correctly . There is no pattern and it throws no codes. Major electric problems. The keyless entry pad didn't work the day I purchased my car. Had a new one installed 3 programs and now all this started. Electrical system
Verbatim from NHTSA filings. Complaints are unverified owner reports.
Safety recalls
Checking NHTSA for open recalls…