2023 CHEVROLET TRAILBLAZER — Complaint #2092326
Open-data reference.
NHTSA Complaint about ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL filed May 15, 2025
NHTSA complaint #2092326 (ODI reference 11661186) concerns a 2023 CHEVROLET TRAILBLAZER and was filed on May 15, 2025. The owner reports the failure occurred on March 27, 2025. The report was geocoded to New York based on the filer's self-reported location. The affected component is categorized as engine and engine cooling:exhaust system:emission control, 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 TRAILBLAZER cohort independently describe similar engine and engine cooling:exhaust system:emission control 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 2023 CHEVROLET TRAILBLAZER shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that upon starting the vehicle, the check engine warning light illuminated. The vehicle was taken to a local Auto Zone where a diagnostic scanner was used to retrieve DTC: P146D. The vehicle was then taken to an independent mechanic where the vehicle was diagnosed, and the same code was retrieved and confirmed. The contact was informed that the emissions control valve was faulty and needed to be replaced. The vehicle was not repaired. The contact referenced Emission Recall: A222379711; as a possible cause for the failure. The manufacturer was notified of the failure. The failure mileage was unknown.
Complaint Details
| NHTSA Complaint ID | 2092326 |
| ODI Number | 11661186 |
| Date Filed | May 15, 2025 |
| Failure Date | March 27, 2025 |
| VIN | KL79MUSL6PB |
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.