There are 6 owner-reported powertrain & transmission complaints for the 2020 Cadillac XT6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Transmission jerking and has become unsafe to drive. Will have to go back to the dealership for this issue. This will be the third time 4 same issue.
The contact owns a 2020 Cadillac XT6. The contact stated while driving at 35 MPH, the vehicle lost power. The vehicle was restarted from the Cadillac App via phone. The contact stated that during the second failure " The steering assist is reduced drive with care" warning message and the check engine warning light illuminated. The contact stated she called On-Star where she was informed the tire pressure, the engine, and the transmission needed attention. The vehicle was towed to a dealer by AAA where it was diagnosed the camshaft solenoid was faulty, with a present poil leak, along with codes P0014 and P0017. As a result, the parts of the engine and battery needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and offered the contact a check to purchase a new vehicle. The approximate failure mileage was 159,838.
I was waiting for a light to change to green and the vehicle shut down because of the auto-stop feature, after a couple of seconds the car turned on again and this message came on "stability track off" and this happened like that like 3 times until I turned off the auto-stop. I took it to the dealer the next day and they scanned it for issue and told me there's nothing wrong with the vehicle.
Vehicle has a high-pitched whining noise when cold. Vehicle also has a transmission shutter problem at lower RPM. I do not think the two are related rather than two separate incidences. But cannot be confirmed that they are two separate. Maybe one problem only. I do have video of this happening. Cannot upload a video though.
Transmission shudder at low RPMs. Feels like transmission should down shift sooner, but it shudders and shakes until RPMs get up higher. Does it when RPMs are around the 1500 mark. Vehicle almost seems like it will stall unless you give it more fuel to get RPMs up higher.
Intermittent shifting problems. Is stuttering when shifting. There seems to be an ongoing problem according to online and G M itself why isn't this recalled. There is no starting point it is intermittent on going. At the 1st instance they recorded it but it didn't get fixed and now they want to see it happening again but it's intermittent how many times do I have to go back
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 26, 2026