One problem related to differential unit has been reported for the 2014 Cadillac ATS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Cadillac ATS based on all problems reported for the 2014 ATS.
Rear left/rear right axle seals leaking reported to me on 06/01/2020 while 2014 Ats was in for service for tires and coolant leak mileage 71,538. I was advised it's a very slow drip and it doesn't need to be taken care of right away but to keep an eye on it vebally over the phone. I looked back on my service records and the leak was detected on 03/20/2020 by the dealer but r. 0 closure date is noted as 03/18/2020 I was not made aware of a critical repair needed on the drive axle (rear differential leak) odometer on 03/18/2020 59,750. The seals should not be breaking at this mileage. . . This should be covered under warranty. It's a massive issue with the Cadillac Ats. This is going to cost around $1500. 00 to fix now. . . Which is obsurd. This is a safety hazard to drive the car like this as per many online reports that I've read online.