2020 Cadillac XT6 Complaints

FUEL/PROPULSION SYSTEM — Filed 06/19/2026

Vehicle stalled while driving on a busy road creating a very dangerous situation. Could not put it in neutral to push it out of the road; it was partially in the road for over an hour. Had to have it towed to replace the fuel pump and fuel pump control unit. Found two recalls after the incident and was told by Cadillac that my VIN was excluded. 1. Fuel Pump Assembly Recall (N202314760 / NHTSA Campaign 20V639) Fuel Pump Power Control Module Recall (N252516900) Out of pocket expense was $1173.97

POWER TRAIN — Filed 01/29/2026

at 60,740 miles, "Steering Assist is Reduced Drive with Care" message appeared. Under warranty, but dealership booked for 2 months. Error went away. After powertrain warranty expires (70,000 miles), message constantly appears, and coolant thermostat display is BLANK. Results in excess fan usage (lowering fuel consumption), reduced steering assist, aggravation, check engine light. This issue has developed while under warranty, for a practically new car. Unacceptable. An extended warranty should be in effect for model 2020 as well.

POWER TRAIN — Filed 09/01/2025

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.

UNKNOWN OR OTHER,ENGINE — Filed 12/03/2025

Vehicle has a known condition with many same year make and model that could cause the engine coolant thermostat to open at a lower temperature than intended. This condition has occurred. As a result the Malfunction Indicator Lamp (Check Engine Light) illuminates and a diagnostic trouble code is set and “steering assistance reduced” appear. The engine cooling fans also run after the engine is switched off. A recent bulletin has been posted to the 2021 Cadillac XT6 but is present in our 2020 as well. Upon calling the dealer our VIN was not on said recall/bulletin.

TIRES — Filed 09/20/2025

While driving approximately 15 MPH I noticed a scraping sound and shimmy in the back. I took the car to Capital Cadillac for diagnostic. They found that the tires were separated. I bought the car brand new in 2020 and it has about 21k miles on it. 265/45 R 21 104 V

ENGINE — Filed 07/14/2025

The Radiator is not functioning, confirmed by a mechanic at a dealership. An engine light did appear to notify me of the problem, however the car has been kept in great condition without accident or cause for the radiator to stop functioning in such a young vehicle.

STRUCTURE — Filed 06/11/2025

Way back rear window leaks in car wash or heavy rain.

UNKNOWN OR OTHER — Filed 03/22/2024

Moldy smell coming from vents when AC runs. Had engine sprayed with a cleaner, but smell is still there. It is mold on the condenser.

POWER TRAIN — Filed 03/31/2023

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.

POWER TRAIN — Filed 12/07/2023

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.