2021 CHEVROLET TRAILBLAZER — Complaint #2097895
Open-data reference.
NHTSA Complaint about ELECTRICAL SYSTEM:IGNITION:INTERLOCK/LOCKOUT filed June 5, 2025
NHTSA complaint #2097895 (ODI reference 11665088) concerns a 2021 CHEVROLET TRAILBLAZER and was filed on June 5, 2025. The owner reports the failure occurred on December 5, 2024. The vehicle had 20,000 miles on the odometer at the time of the incident. The report was geocoded to New Jersey based on the filer's self-reported location. The affected component is categorized as electrical system:ignition:interlock/lockout, 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 electrical system:ignition:interlock/lockout 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 TRAILBLAZER shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while attempting to remove the key from the ignition, the key remained stuck in the ignition cylinder. The contact had to turn off and restart the vehicle several times to be able to remove the key. The contact stated that the failure occurred intermittently. The vehicle was taken to the dealer who sprayed the ignition cylinder to clean the cylinder; however, the failure persisted. The vehicle was returned to the dealer who diagnosed that the shift lock mechanism failed to recognize that the vehicle was in park(P). The shifter assembly was replaced. The manufacturer was informed of the failure and opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 20,000.
Complaint Details
| NHTSA Complaint ID | 2097895 |
| ODI Number | 11665088 |
| Date Filed | June 5, 2025 |
| Failure Date | December 5, 2024 |
| VIN | KL79MMS23MB |
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.