2021 GMC SIERRA 1500 — Complaint #1822744
Open-data reference.
NHTSA Complaint about ELECTRICAL SYSTEM:WIRING filed June 30, 2022
NHTSA complaint #1822744 (ODI reference 11471842) concerns a 2021 GMC SIERRA 1500 and was filed on June 30, 2022. The owner reports the failure occurred on June 27, 2022. The vehicle had 23,300 miles on the odometer at the time of the incident. The report was geocoded to Illinois based on the filer's self-reported location. The affected component is categorized as electrical system:wiring, 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 GMC SIERRA 1500 cohort independently describe similar electrical system:wiring 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 GMC SIERRA 1500 shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2021 GMC Sierra 1500. The contact stated while attempting to start the vehicle, the vehicle failed to operate as needed. The service parking brake, check engine, and other unknown warning lights were illuminated. The vehicle was towed to the local dealer to be diagnosed. The contact was informed that the failure was due to damaged electrical wiring caused by rodents. The contact was informed by the dealer that the wiring insulation was made from soy-based materials. The vehicle was repaired three times due to the failure. The manufacturer was notified of the failure. The approximate failure mileage was 23,300.
Complaint Details
| NHTSA Complaint ID | 1822744 |
| ODI Number | 11471842 |
| Date Filed | June 30, 2022 |
| Failure Date | June 27, 2022 |
| VIN | 1GTR9CED0MZ |
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.