There are 2 stored owner reports matching the brakes leading-label group for the 2015 Cadillac CTS in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)The contact owns a 2015 Cadillac CTS. The contact stated that while driving approximately 40 MPH and attempting to stop, the braking system malfunctioned, and the brake pedal became very difficult to depress. The failure almost caused the contact to lose control of the vehicle and crash. The vehicle was turned off and restarted and the “Brake Assist" message was displayed. The vehicle was taken to the local dealer to be diagnosed. The contact was informed that the vacuum pump was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was also notified of the failure. The failure mileage was 74,000.
TL* THE CONTACT OWNS A 2015 CADILLAC CTS. THE CONTACT STATED THAT THE BRAKE DIFFERENTIAL EXPERIENCED A GRINDING AND RUBBING SOUND. THERE WAS NO WARNING LIGHT ILLUMINATED. THE CONTACT CALLED CAPITAL CADILLAC (2210 COBB PKWY SE, SMYRNA, GA 30080, (770) 884-7397) AND INFORMED THE DEALER OF THE FAILURE. THE CONTACT SCHEDULED AN APPOINTMENT WITH THE DEALER WHICH WAS STILL PENDING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 125,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.