My rear differential gear is failing on my 2015 Cadillac CTS luxury 2.0T. I just reached approx 69,000 miles upon returning from an approx 2,200 mile trip to the east coast from Texas. I noticed a whine like noise after my drive back to Texas that seemed to get louder and louder coming from the rear of the vehicle. I took my vehicle to Firestone for inspection and it was confirmed the rear differential was failing. i was also advised the the seal were leaking as noted in the attached report. I was shown the drain plug which had an abundance of metal shavings present to confirm. The fluid was replaced and I was advised to follow up ASAP. Upon researching the issue I discovered this is a common issue confirmed on the Cadillac forums. This issue could-??ve left me stranded or worse, caused an accident as I was traveling around the Christmas and the New Year to visit family during peak travel times. There were no warning signs or indications via my vehicle warning systems nor was there any contact from my Cadillac dealer or GM representatives. My vehicle is currently available for inspection as the issue has not been resolved.

- San Antonio , TX, USA

Was simply driving my normally and out of no where there was a loud pop and driving the car all I heard was a loud grinding noise as I stepped on the gas, and the car would not shift into reverse. No lights or warnings had ever popped up into the dash. Also very strong burning and metal smell came from the car. I have taken the car to an independent repair shop and was determined the rear differential has gone bad. Apparently many other people with similar year vehicles have had the same issues with this make and model of car, to add on another car like mines came into the same shop with the same problem.

- Cordova, TN, USA

The vacuum pump failed and caused catastrophic engine failure. The vacuum pump was constructed with substandard design and the composition of the parts within the vacuum pumps internal components. The vacuum pump is an integral part of the emissions system, the braking system and the engine. This is not an isolated incident as the replacement vacuum pump, even if replaced, will fail again. The pump should have been designed with a shear pin so the engine camshaft would not have been destroyed.

- Louisville, KY, USA

The recall that was done on the 2014-2015 CTS-V should have been a recall on ALL models of CTS because all of the models in the timeframe received the dsame flawed rear differential. My 2015 CTS Luxury has only 80k miles on it and the differential has chunks of metal in its oil. It is the exactaame differential as is in the CTS-V. At any time my rear end will lock up once the dofferential fully eats itself. It is an extreme saftey hazard for anyone driving any type of CTS from 2014-2015.

- Destin, FL, USA

2015 Cadillac CTS Luxury, 81k miles, rear differential has metal chunks in its fluid and makes load roaring sound. Dealership mecahnics said that the differential dailing that early is a known issue, and if it had progressed rhe differential would have seized up and the rear tires would have locked up. No parts available anywhere for differential replacement or overhaul.

- Destin, FL, USA

The rear differential started making a loud whining noise around 53,000 miles. It then turned into a grinding noise. I had it checked by a mechanic and he confirmed it was rear differential that needed replacing. He recommended not driving the vehicle since the differential could completely fail and cause an accident. Not having any mechanical experience, the noise was the only indication of a problem. No warning lights or sensor faults.

- Littlefield, TX, USA

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.

- Milford, DE, USA

I was almost involved in an accident on the highway last night, either the transmission or the real axles broke as I was driving 70 mph. Never informed of any recall and I want answers, as it could have been a horrible accident. The car was towed to my home last night. This occurred in battle creek Michigan on M66 South

- East Leroy, MI, USA

This vehicle is the subject of a safety recall issued in Jan. The dealer ordered repair parts on May 11. No answer from Cadillac customer service to inquire about parts availability. What is considered "reasonable time" when addressing a safety recall?

- Lake Havasu, AZ, USA

The contact owns a 2015 Cadillac Cts. The contact received notification of NHTSA campaign number: 20V038000 (power train) however, the part to do the recall repair was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The vehicle was taken to barkley Buick GMC Cadillac, Inc, (3575 skyland blvd E, tuscaloosa, al 35405), where the vehicle was rejected to be serviced due to parts not being available for the repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Part distribution disconnect.

- Tuscaloosa, AL, USA

Engine sounds like a truck, while driving. Just purchased the vehicle. 30,000 miles on odometer.

- Decatur, GA, USA

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.

- Springfield, IL, USA

When idling or when you cold start the car it tends to have a slight shake/tremble feel all throughout the car even passengers felt it also when accelerating slowly and you hit 15 mph car tends to shift hard into 2nd gear

- Salinas, CA, USA

The vehicle accelerated on its own when it was in park, with the emergency brake engaged, and the engine was turned off. Home security camera captured the entire incident on film. Would be happy to provide the NHTSA with the footage.

- Plymouth Meeting, PA, USA