There are 3 owner-reported engine complaints for the 2019 Cadillac XT5in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2019 Cadillac XT5. The contact stated that while leaving the driveway, there was an abnormal sound coming from the vehicle. The contact stated that while driving at 65 MPH, there was an abnormally loud squeaking sound coming from the vehicle. The check engine warning light was illuminated. The contact thought that the catalytic converter had been stolen. The vehicle was taken to an independent mechanic who determined that the catalytic converter was severed at the connection point and cracked, and removed. The contact stated that coils were damaged, and the thermostat housing was cracked. The vehicle was repaired, but the failure recurred. The local dealer was contacted, who determined that the catalytic converter had been replaced, but the failure persisted. The dealer informed the contact that the parts were on backorder. The manufacturer was not contacted. The failure mileage was approximately 100,000. The VIN was not available.
The contact owns a 2019 Cadillac XT5. The contact stated that while driving on the highway at 25 MPH, the vehicle lost motive power. There were no warning lights illuminated. The contact was able to coast the vehicle to a stop and park on the side of the highway. The contact waited for a while before restarting the vehicle. The contact continued to drive the vehicle; however, the failure reoccurred. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 95,800.
Was driving the other day and the message steering assist reduced, AC fan was blowing but no A/C then engine light came on. Made appointment next day with my Cadillac local dealer and service writer said he knew what the problem was. After he plugged into my car, then into his computer it read - bad thermostat. Fortunately, mine was covered under the powertrain warranty, however, he said there were 4 other vehicles just like mine (XT5) in there for the same issue. This is a well known issue with Cadillac and for those of us who have a warranty that's good. Otherwise, it is $1,200 to fix!!! Ouch!! Not sure why Cadillac hasn't issued a recall on this problem and very disappointed in them for not doing so.
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.
Data synced from NHTSA on Apr 25, 2026