Burning smell, traction control, rear axle service along with suspension lights all came on the odometer. Shakes at low idle and wont stay running. Happened this weekend after pulling into the driveway after driving. We scanned code for cylinder 4 misfire. On scanner we had multiple other cylinder misfires but cylinder 4 is a dead misfire. We removed spark plug and found wore. We initially thought to start with replacing spark plugs and cylinder 4 coil. We consulted with customer and agreed to replace all spark plugs and cylinder 4 coil. After replacing we found no change in cylinder 4 misfire. We removed and re installed original coil and re tested. We performed a compression test on cylinder 4 and have 0 PSI. We thought possible carboned valve stuck open due to direct injection system. We performed a GDI carbon clean but still no change. We installed a borescope into cylinder to inspect and found what looks like a broken piston or part of a valv We scanned code for cylinder 4 misfire. On scanner we had multiple other cylinder misfires but cylinder 4 is a dead misfire. Weremoved spark plug and found worn. We initially thought to start with replacing spark plugs and cylinder 4 coil. We replace all spark plugs and cylinder 4 coil. After replacing we found no change in cylinder 4 misfire. We removed and re installed original coil and re tested. We performed a compression test on cylinder 4 and have 0 PSI. We thought possible carboned valve stuck open due to direct injection system. We performed a GDI carbon clean but still no change. We installed a borescope into cylinder to inspect and found what looks like a broken piston or part of a valve broken and smashed into the piston. Fault is internal engine, would need to tear down and re build or replace engine assembly. My safety was at risk driving 80mph on the highway perhaps engine could have seized or caused problems I-??m not able to deal with along with having my infant and toddler in the car.

- Greeley , CO, USA

ON 8/24/2021 APPROX 9:45AM I RETURNED HOME FROM THE MARKET AS I WAS PARKING MY VEHICLE (BACKING INTO A PARKING SPACE) ISHIFT MY VEHICLE CONTROL TO THE REAR POSITION AND IT LOCK UP IT WAS STUCK AND WOULD NOT RELEASE I WAS SHOCKED AND UPSET BECAUSE THE FRONT OF MY VEHICLE WAS STILL IN THE WAY OF PASSING VEHICLE SO I TUNED MY FRONT WHEELS IN AS MUCH AS I COULD BUT THAT WAS ALL I COULD DO I HAD TO KEEP MY FOOT ON THE BREAKS SO THAT MY VEHICLE WOULD NOT ROLL BACK AND SLAM INTO THE TRUCK BEHIND ME, I CALL THE DEALERSHIP FC KERBECK 100 ROUTE 73 NORTH PALMYRA N.J I TOLD THEM WHAT HAPPENED AND THAT I WAS UPSET AND DID NOT KNOW WHAT TO DO I STILL HAD MY FOOT ON THE BREAKS BECAUSE I DID'NT KNOW IF IT WAS SAFE TO TURN OFF MY VEHICLE OR WHAT AFTER I WAS DISCONNECTED I CALLED BACK AND I WAS INFORMED ON HOW TO SAFLEY SHUT DOWN MY VEHICLE. MY VEHICLE HAD TO BE TOWED TO THE DEALERSHIP I FOUND A RECALL ON THE ISSUE FROM GENERAL MOTORS JUNE 2014 SAYING THAT THE DRIVER MAY NOT BE ABLE TO SHIFT THE TRANSMISSION IN AND OUT OF GEAR DUE TO THE SHIFT CABLE NOT BEGIN SECURED AND THAT IT COULD SLIP OUT OF THE BRACKETS AND THE DRIVER WILL NOT BE ABLE TO STOP THE VEHICLE FROM ROLLING RESULTING IN A CCIDENT WHEN I MENTION THIS TO THE DEALERSHIP THEY CLAIM THAT THEY NEVER HAD ANY RECALLS ON THID SAFTEY ISSUE I PURCHASE MY VEHICLE IN 2017 SO THEY WERE WELL AWARE THAT THIS COULD BE A SAFTEY ISSUE SOME WHERE DOWN THE LINE BUT THEY FAILED TO MAKE SURE THAT THE CONSUMER WAS AWARE OF THIS ISSUE THAT THEY COULD HAVE BETTER CONTROL IF SOMETHING LIKE THIS SHOULD HAPPEN i WAS SO UP SET AND SHOCK THAT THIS HAD HAPPEN MY GEARS WERE LOCK DOWN I COULD NOT AT THAT TIME MOVE MY VEHICLE. MY IS THIS INFORMATION NOT MADE AVAILABLE TO THE CONSUMER WHEN THEY BUY THESE CARS THEN A FEW YEARS LATER WHEN IT DOES EALERSHIP BLOWS YOU OFF AND ACT AS IF YOU ARE CRAZY THIS IS A SAFTEY ISSUE THAT COULD CAUSE YOUR LIFE.

- Philadelphia, PA, USA

The contact owns a 2014 Cadillac Cts. The contact stated that while driving, the vehicle vibrated abnormally. The contact stated the vehicle was taken to an independent mechanic who replaced the alternator, fuel pump, battery and found that the timing chain had failed. The timing chain was not replaced. The manufacturer advised the contact that the vehicle was not under recall. The vehicle was not repaired. The failure mileage was 103,400.

- Yorba Linda, CA, USA

The contact owns a 2014 Cadillac Cts. The contact stated that while driving and making a left turn, the vehicle stalled with several unknown warning lights illuminated. Roadside assistance was contacted and the vehicle was jump started. The vehicle was driven to the residence. The vehicle was not taken to be diagnosed nor repaired. Neither the dealer nor the manufacturer were informed of failure. The failure mileage was approximately 85,000.

- Hammond, IN, USA

Rear differential at risk of failure. I contacted Cadillac customer service and they did not see the recall in their system and advised me to contact NHTSA. They said that the NHTSA did not show a recall for that vehicle. The consumer stated the vehicle had numerous safety defect repairs. The consumer requested that the vehicle be bought back.

- Austin, TX, USA

Vehicle displays 'service rear axle' 'service stabilitrak' 'park assist temporarily unavailable' 'automatic seatbelt tightening unavailable'. 4 separate and unique occurrences. Some have also included 'reduced engine power'. typically the messages come on and reduced power occurs after expressway driving, followed by stop and go city driving or traffic. Also ambient temps are over 80 degrees with each occurrence. Lastly engine bay is extremely hot after the service messages are displayed. Engine temperature gauge does not indicate overheating (displays under the halfway point of the gauge). I have 2 separate video documentations that can be uploaded to youtube. 1st occurrence resulted in cylinder head replacement under warranty. The next 3 occurrences have all happened after the warranty service. Dealership has been unable to replicate the issue after the car cools down. Cadillac customer service said a second dealership review was required even though the car was brought to the dealer with the above service messages present. Attached documents display first warranty service, and second record service messages being present. Similar tsb issued for the ats-V LF4 engine for 'service rear axle' or 'rear axle off', also the LT4 engine has a tsb for engine overheating and going into reduced power mode when the charge air cooling system is not refilled properly via vac-N-fill method. This vehicle has a similar liquid to air, charge air cooling system, requiring the same type of fill method. Full disclosure I am a General Motors employee.

- Howell, MI, USA

The contact owns a 2014 Cadillac Cts. While driving approximately 30 mph, the stabilizer control warning indicator illuminated as a message displayed 'reduce engine capacity'. there was a reduction in the engine power and the vehicle then stalled. The vehicle failed to restart. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 17,000.

- Fraser, MI, USA