2021 CHEVROLET BLAZER — Complaint #2071249
Open-data reference.
NHTSA Complaint about ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN filed March 5, 2025
NHTSA complaint #2071249 (ODI reference 11646473) concerns a 2021 CHEVROLET BLAZER and was filed on March 5, 2025. The owner reports the failure occurred on December 31, 2024. The vehicle had 95,000 miles on the odometer at the time of the incident. The report was geocoded to Texas based on the filer's self-reported location. The affected component is categorized as engine and engine cooling:cooling system:fan, one of NHTSA's standardized taxonomy codes used to group defect patterns across make, model, and year.
The filer flagged the following severity indicators: crash: no, fire: no, injuries: 0, fatalities: 0. No crash, fire, or fatality was associated with this report, which places it in the early-warning stream rather than the priority-review stream. Because a VIN was supplied, this complaint is tied to a specific vehicle and not just a model-year cohort.
Individual complaints are consumer-submitted and unverified by NHTSA engineers — the agency's role at this stage is to collect, index, and make them searchable. What matters for federal action is the pattern: when many owners of the same CHEVROLET BLAZER cohort independently describe similar engine and engine cooling:cooling system:fan failures, defect investigators have grounds to open a PE and request manufacturer data. Related filings for the same vehicle and component appear below, and the detail page for the full 2021 CHEVROLET BLAZER shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2021 Chevrolet Blazer. The contact stated that upon turning off the vehicle, the fan remained engaged for approximately 10 minutes. Additionally, the contact stated that the A/C system was intermittently inoperable. The contact stated while driving at an undisclosed speed, the vehicle made an abnormal sound, and the contact noticed that there was a coolant leak onto the floor of the vehicle. An unknown warning light was illuminated. The vehicle was taken to East Houston Auto Electric, where it was diagnosed that the thermostat was stuck and needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 95,000.
Complaint Details
| NHTSA Complaint ID | 2071249 |
| ODI Number | 11646473 |
| Date Filed | March 5, 2025 |
| Failure Date | December 31, 2024 |
| VIN | 3GNKBDRS2MS |
Source: NHTSA Vehicle Complaints Database. Component taxonomy and severity codes are standardized by NHTSA Office of Defects Investigation.
Read our methodology — how this data is sourced, computed, and verified.