Built from official NHTSA complaint and recall data · data through 07/12/2026
High complaint levelIts most-reported problem — Electrical System — runs 2.7× the fleet median for that category across the 2547 model-years tracked on this site.
123Complaints
1Recalls
5Crashes
1Fires
6Injured
0Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Electrical System (29.3% of complaints) — recall and investigation status for this vehicle is currently unavailable.
Electrical System complaints here are 2.7× the median for that category across the 2547 model-years tracked on this site.
Complaint category
Reports
Official status
Reference
Electrical System
36 · 29.3%
not available
—
Engine
36 · 29.3%
not available
—
Service Brakes
18 · 14.6%
not available
—
Power Train
17 · 13.8%
not available
—
Fuel/propulsion System
16 · 13%
not available
—
Steering
15 · 12.2%
not available
—
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 123 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
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. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
What owners report
“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…”NHTSA complaint 11699684 — filed 11/16/2025 · ELECTRICAL SYSTEM
“Request for Recall Review â 2021 Chevrolet Blazer Steering Assist and Cooling Fan Issue Hello, I am writing to report a recurring issue with my…”NHTSA complaint 11692416 — filed 10/09/2025 · ELECTRICAL SYSTEM
“The vehicle has 14,000 miles on it and the fuel pump control module has gone out on it. This happened while away from home and…”NHTSA complaint 11675095 — filed 07/21/2025 · ELECTRICAL SYSTEM
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2021 Chevrolet Blazer?
Electrical system issues are the most-reported category, cited in 36 of 123 NHTSA complaints (29.3%), followed by engine (36), unspecified/other issues (20), service brakes (18). Complaints are unverified owner reports.
How many complaints does the 2021 Chevrolet Blazer have?
123 complaints were on file with NHTSA as of 07/12/2026. Of those, 5 involved a crash, 1 involved a fire, and 6 reported injuries. No deaths were reported.
Does the 2021 Chevrolet Blazer have any recalls?
Yes — 1 NHTSA safety recall campaign, including campaign 20V811000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2021 Chevrolet Blazer's reported problems?
Recall or investigation data is partly unavailable for this vehicle right now — check your VIN at nhtsa.gov/recalls for the authoritative answer.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/12/2026.
Install CarModelProblemsAdd it to your home screen for one-tap access — no app store.
Install CarModelProblemsTap Share, then Add to Home Screen.