The contact owns a 2014 Cadillac CTS. The contact stated that while driving at an undisclosed speed, the vehicle made an abnormally loud sound. The vehicle was taken to an independent mechanic, who diagnosed that the rear differential needed to be replaced; however, the part was on backorder. The vehicle was not repaired. The manufacturer was made aware of the failure but did not assist. The failure mileage was approximately 41,000.

- Watertown, WI, USA

The contact owns a 2014 Cadillac CTS. The contact stated while driving at various speeds, there was a grinding sound coming from rear end of the vehicle. The vehicle was taken to the local service center who discovered metal shavings inside in the rear differential fluid and informed the contact that the rear differential needed to be replaced. The vehicle was not yet repaired. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The failure mileage was 84,000.

- Conway, SC, USA

The contact owns a 2014 Cadillac CTS. The contact stated that while driving at an undisclosed speed, he heard an abnormal sound coming from the rear wheels. The vehicle was taken to the dealer and diagnosed with metal shavings inside the rear differential. The contact was informed that the rear differential needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 66,500.

- Rochester, NY, USA

The contact owns a 2014 Cadillac CTS. The contact stated that while driving at various speeds, an abnormally loud grinding sound was coming from the rear end of the vehicle. The vehicle was initially taken to an independent mechanic and the contact was informed of a fault with the rear differential. The mechanic referred the contact to the dealer for assistance. Once at the dealer, it was confirmed that the rear differential had experienced internal grinding and needed to be replaced. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 50,000.

- Philadelphia, PA, USA

The contact owns a 2014 Cadillac CTS. The contact stated while driving at approximately 50 MPH, a loud grinding sound came from the rear of the vehicle. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed that the rear tires needed to be replaced. The contact had both rear tires replaced; however, the loud grinding noise recurred and was also heard a sound when starting the vehicle, shifting into drive(D) and slowly accelerating. The contact took the vehicle back to the same dealer who determined that the rear differential needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 78,000.

- Oxford, AL, USA

The contact owns a 2014 Cadillac CTS. The contact stated that while starting and also while driving at various speeds, there was an abnormal loud roaring noise detected from the rear end of the vehicle. There were no warning lights illuminated. The vehicle was taken to an independent mechanic who informed him that the failure was due to the rear differential. The local dealer was contacted but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The approximate failure mileage was 84,000.

- Marlboro, NJ, USA

The contact owns a 2014 Cadillac CTS. The contact stated while driving 20-30 MPH, he heard an abnormal loud roaring sound coming from the rear of the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the rear differential had failed and needed to be replaced. However, the parts were not available. The dealer was notified of the failure and informed the contact that the parts were not available. The vehicle was not repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was approximately 78,000.

- West Hempstead, NY, USA

The contact owns a 2014 Cadillac CTS. The contact stated while driving approximately 5 MPH, there was an abnormal roaring sound coming from the rear of the vehicle. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that the rear differential needed to be replaced. The vehicle was not repaired. The contact informed the dealer that the vehicle had experienced the failure listed in NHTSA Campaign Number: 20V038000 (Power Train). The manufacturer was notified of the failure and the contact was informed that the VIN was not included in the recall. The approximate failure mileage was 162,000.

- Rowlett, TX, USA

The Contact owns 2014 Cadillac CTS. The contact stated while driving approximately 40-50 mph, there was an abnormal sound coming from the rear of the vehicle. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that the rear differential needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 55,000.

- Scotia, NY, USA