general problems of the 2015 Cadillac CTS

The cue system is variably unresponsive/frozen. Cannot turn on heat, cannot turn on navigation. Situation is distracting as driving and trying to touch the screen to turn on heat in winter, or to receive navigation information when highway shut down and detour was not yet posted. Nearly caused an accident. Dealer confirmed that system is broken. No one else has inspected the system. System never worked properly and had many glitches when vehicle purchased new.

What component or system failed or malfunctioned, and is it available for inspection upon request? brakes , emergency brake , engine overheating , how was your safety or the safety of others put at risk? car shut off in the highway while I was with my kids has the problem been reproduced or confirmed by a dealer or independent service center? yes it went in the shop 05/12/22 but problem with car still continued has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? yes I dont know how it passed due to emergency brake and engine & brakes were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? yes first engie light came on then car shut off.

In about mid November 2021 a grinding noise became noticeable from the rear of my car and quickly became louder. From experience, I thought it was probably bearing failure. The car was parked at that time and has not been driven since. Today is 12/20/21, so the car has been out of service for one and a half months at this point. An ase certified mechanic inspected the vehicle and found the rear differential to be defective, it was identified as the obvious source of the noise and had metal particles in the fluid. Doing research I found that rear differential failure was common in Cadillac Cts's and a gm safety recall n192279370 had been issued with the bad units being replaced at "no charge". The Cadillac designated model in question is the Cts-v with the 3. 6l twin turbo v6 engine. My car is a 2015 Cts with a 4l turbo engine. I haven't found a recall issued on this model and I don't understand why it hasn't been done. I feel that a differential failure in my vehicle would be just as dangerous as that in the designated recall vehicle, it's basically the same car with a different engine. The vehicle was inspected by one mechanic only, but his findings reveal an obvious fault. A review of the incidents with the designated vehicle involved show that very serious safety problem exists which would threaten the driver and passengers if this vehicle was put back in service. I expect that gm must recognize that this safety fault affects a wider range of their vehicles and it has to be included in their recall. I ask ntsha to intercede.

The rear differential went out while I was driving.

Brake light system failed and had to be replaced. Infotainment screen failure.

I purchased this car 15mar16 from dublin Cadillac in dublin, CA. The driver side blind spot detection was not working. I took the car back and they confirmed it was not working correctly, but told me there was nothing they could do about it and that "I would just have to live without it". Since this is a safety feature, I thought they should have corrected it under warranty. They have refused, so I am bringing this to you attention and requesting help to get it working correctly. I have had two close calls due to this problem. The dealer is dublin Cadillac, 4200 john monego court,dublin, CA.