Differential Unit problems of the 2015 Cadillac CTS

The contact owns a 2015 Cadillac Cts. The contact stated while driving 65 mph, the vehicle shuddered and made an abnormally loud sound. The contact exited the highway and drove to the nearest mechanic shop at a gas station. The mechanic diagnosed the vehicle and determined that the rear differential was fractured and needed to be replaced. The vehicle was being repaired. The contact related the failure to NHTSA campaign number: 20v038000 (power train); however, the VIN was not included in the recall. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 98,000.

The contact owns a 2015 Cadillac Cts. The contact stated that there was an abnormal loud clunking sound coming from the rear end of the vehicle while the vehicle was shifting into gears. The vehicle was taken to amco transmissions & total car care, where it was diagnosed that the rear differential had failed and needed to be replaced. The contact stated that the vehicle was previously serviced under the NHTSA campaign number: 20v038000(power train); however, the failure persisted. The vehicle was not repaired. The local dealer and the manufacturer were notified of the failure. The failure mileage was 125,000.

The contact owns a 2015 Cadillac Cts. The contact stated while driving at various speeds, she became aware of a grinding sound on the rear end of the vehicle. The contact also noticed an unknown sound emanating near the brake pads; however, the contact stated it was not the brake pads. No warning lights were illuminated. The vehicle was diagnosed by an independent mechanic who diagnosed that the differential needed to be replaced. The vehicle was not repaired. The contact related to the failure with the NHTSA campaign number: n192279370 (rear axle differential seizing). However, the vehicle was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 157,000.

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.

There was a very loud noise coming from the back of my vehicle while driving. Mechanic showed me the rear differential fluid has metal shavings in it and he said the car was dangerous to drive. Dealership told me to call general motors at (800) 222-1020 and they told me to take it to the dealership and gave me file number 9-6712786810. It is at ig burton, milford, DE, now for diagnosis.

On August 5, 2019, I was travelling down a two lane road @ 35-40 mph and with a loud clunk from the rear of the car, the rear wheels locked up. I went into a skid and the front of the car swerved back and forth across both lanes. I was able to keep the car under on the road as I applied the brakes and steered into the skid as the front of the car swerved back and forth. Fortunately, an oncoming driver was able to stop his car in time to avoid a head-on when he saw me swerve into his lane. I called the dealer, who sent a tow truck. The service manager looked at the car the next day and confirmed the differential was bad--all kinds of metal chunks came out with the oil when they drained it. He told me that the interior of the differential had pretty much self-destructed. The car was within its powertrain warranty, so the service manager said the dealer would replace the differential. Almost two months later, the dealer hasn't located a replacement differential. This car is a Cadillac v-sport, a performance-oriented model with an electronic limited slip differential. During the years this model was in production, general motors made less than 1,000 per year, and I believe that perhaps the differential was a special type for the v-sport, although I am not sure. I do know of others having this exact same problem--they have reported the problem on a Cadillac v-sport user's group found at Cadillacforums. Com. The attached pictures show the skid marks made by the rear wheels and where the front of the car ended up. The car on the side of the road is mine, where some passersby pushed the car.