2015 CADILLAC CTS — Complaint #1796943
Open-data reference.
NHTSA Complaint about POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT filed February 22, 2022
NHTSA complaint #1796943 (ODI reference 11453376) concerns a 2015 CADILLAC CTS and was filed on February 22, 2022. The owner reports the failure occurred on August 15, 2021. The vehicle had 80,000 miles on the odometer at the time of the incident. The report was geocoded to Maryland 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 that while driving at various speeds, an abnormal rattling sound was coming from the rear end of the vehicle without warning. The contact had taken the vehicle to a dealer where they diagnosed the failure as a leak in the rear differential. The contact was initially informed that the repair would be covered under warranty; however, a few days later, the contact was informed otherwise. He was then informed that the vehicle would not be covered under warranty and was given an estimate for repair. The manufacturer was also notified of the failure and provided a case number. The vehicle had yet to be repaired. The failure mileage was approximately 80,000.
Complaint Details
| NHTSA Complaint ID | 1796943 |
| ODI Number | 11453376 |
| Date Filed | February 22, 2022 |
| Failure Date | August 15, 2021 |
| VIN | 1G6AX5S38F0 |
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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.