My new cadillac with only 6700 miles on it had to have a brand new engine put it because of bad pistons. This is a very common thing for cadillac ats models. If you go on the cadillac forums website, you will see many other cadillac owners having the same problem.
2014 Cadillac Ats engine complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
There has been 2 occasions my brand new car has stalled and lost power. Both times the car has sat for over an hour. When I get into vehicle it starts up and I take off. Within a minute the vehicle is stalling and fails to accelerate. Each time I have taken it into cadillac and they can't find a problem because it did not register in the computer system nor does a test drive discover problem. The real concern is if I'm crossing an intersection and the vehicle stalls and I'm in an accident. I don't want to be a statistic waiting for gm to find this problem.
The "check engine" indicator came on, soon thereafter, "stabilitrak" and "engine power is reduced" indicators came on. Ten minutes later, the car shut down in the middle of the highway. After 10-15 minutes, the car started up again with the "check engine" light still on. Car was repaired at a cadillac dealership. Service representative advised that it was necessary to solder some wires/terminals behind the right rear wheel well fender liner. A service bulletin (pie0291b) identified this problem. This same exact problem arose in mid-february. The remedy at that time was to replace the throttle body. Hopefully, this new remedy will work now that there is a service bulletin to assist with the diagnosis.
I bought this car new on 1/16/14. On 2/19/14 the engine light came on and the engine lost power. I took it to the dealer and they replaced a sensor assembly. On 3/18/14 the same thing happened and the car lost power. The mileage was about 1,500.. Now I am being told that there is a problem that the engineers at gm are looking into but no fix is in sight.. The first two times I lost power I was in town but if this happened on the highway it could be a real problem. I feel gm has a major problem and they do not want to be honest. I am being told nothing other then they are working on the problem.
While driving the car at about 15 to 20 miles an hour the car came to a complete stop. There was a total shut down of the electrical system. The emergency blinkers could not be engaged, the car could not be shifted. The car was towed into the shop, the dealer advised me the engine failed and a new engine was put into the car by the dealer. We have owned the car for two months.
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