2015 CADILLAC CTS — Complaint #1994962
Open-data reference.
NHTSA Complaint about POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT filed May 28, 2024
NHTSA complaint #1994962 (ODI reference 11591158) concerns a 2015 CADILLAC CTS and was filed on May 28, 2024. The owner reports the failure occurred on March 30, 2024. The vehicle had 157,000 miles on the odometer at the time of the incident. The report was geocoded to Kansas based on the filer's self-reported location. The affected component is categorized as power train:driveline:differential unit, 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 CADILLAC CTS cohort independently describe similar power train:driveline:differential unit 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 2015 CADILLAC CTS shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2015 Cadillac CTS. The contact stated while driving at various speeds, there was an abnormal grinding sound coming from the rear end of the vehicle. The contact also became aware of an abnormal sound near the brake pads; however, the contact stated that the sound was not coming from the brake pads. No warning lights were illuminated. The vehicle was diagnosed by an independent mechanic who determined that the differential needed to be replaced. The vehicle was not repaired. The contact related to the failure to NHTSA Campaign Number: 20V038000 (Power Train); however, the VIN was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 157,000.
Complaint Details
| NHTSA Complaint ID | 1994962 |
| ODI Number | 11591158 |
| Date Filed | May 28, 2024 |
| Failure Date | March 30, 2024 |
| VIN | 1G6AR5SX2F0 |
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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.