2020 Cadillac XT6 Owner Complaints

The contact owns a 2020 Cadillac XT6. The contact stated that while idling at a stoplight, the vehicle experienced a loss of motive power. The contact stated that multiple attempts were required to restart the vehicle. During the failure, the transmission failed to shift into neutral, and the check engine warning light illuminated. The contact researched and discovered NHTSA Campaign Number: 20V639000 (Fuel System, Gasoline) and associated the failure with the recall. The vehicle was taken to the dealer; however, the dealer could not determine the cause of the failure because the check engine warning light was no longer illuminated. The manufacturer was notified of the failure, and it was confirmed that the VIN was not included in the recall. The failure mileage was approximately 88,000.

NHTSA ID

11776133

Incident

Sep 13, 2026

Mileage

88,000 mi

UNACCEPTABLE SAFETY HAZARD: General Motors & Cadillac Need to Take Responsibility I am writing this to urge Cadillac and General Motors to address a critical safety issue before someone gets seriously hurt or dies. While driving my 2020 Cadillac XT6 over an overpass in XXX, the vehicle suffered a complete electrical breakdown. Every dash light flared up, and I instantly lost total control—NO steering assist, NO acceleration. Being stranded in a moving vehicle without control on an elevated roadway was terrifying. This car has under 50,000 miles. It is currently on its 6th service visit at Stevens Creek Cadillac and has been sitting in their shop for 3 full weeks with zero answers or progress. I trusted Cadillac again even after my 2006 SRX had to be donated under 150k miles following 2 transmission replacements and endless issues. But experiencing a sudden, total power failure at highway speeds crosses every line. I am fearful to take this vehicle back. I do not feel safe put back behind the wheel. GM and Cadillac really should not sell these vehicles until their electrical issue is safe. I opened a case with GM and they said that the buy back was denied which is insane to me. this vehicle doesn't even have 50,000 miles on it. I hope someone will help my husband and I. thank you, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11774077

Incident

Sep 3, 2026

The contact owns a 2020 Cadillac XT6. The contact stated that while accelerating from a complete stop and driving below 30 MPH, the vehicle shuddered, hesitated, and jerked. The vehicle was taken to the dealer, where it was diagnosed with burned transmission fluid and excessive metal shavings inside the fluid. The dealer determined that the transmission needed to be replaced. The vehicle was scheduled to be repaired. The contact associated the failure with NHTSA Campaign Number: 20V668000 (Power Train). The manufacturer was notified of the failure by phone and offered to cover 50 percent of the cost of the repair. The failure mileage was 16,000.

NHTSA ID

11770052

Incident

Sep 18, 2026

Mileage

16,000 mi

The contact owns a 2020 Cadillac XT6. The contact stated that while reversing at an undisclosed speed, the rear-view camera screen was intermittently dark and inoperable. The camera malfunction warning light was illuminated. The vehicle was taken back to the residence. The failure mileage was approximately 41,000.

NHTSA ID

11768307

Incident

Sep 30, 2026

Mileage

41,000 mi

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

NHTSA ID

11745954

Incident

Jun 19, 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.

NHTSA ID

11733526

Incident

Jan 29, 2026

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.

NHTSA ID

11717683

Incident

Sep 1, 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.

NHTSA ID

11704162

Incident

Dec 3, 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

NHTSA ID

11693387

Incident

Sep 20, 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.

NHTSA ID

11675322

Incident

Jul 14, 2025

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

NHTSA ID

11669336

Incident

Jun 11, 2025

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.

NHTSA ID

11656043

Incident

Mar 22, 2024

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.

NHTSA ID

11648582

Incident

Dec 7, 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.

NHTSA ID

11648581

Incident

Mar 31, 2023

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.

NHTSA ID

11632207

Incident

Oct 15, 2024

Mileage

159,838 mi

There is a known problem, which Cadillac refuses to recall, regarding a steering assist reduced warning. The warning light disables the air conditioning system and steering assist. When the light comes on, reduced power to the steering system occurs. I took the vehicle in to be serviced, but the service light was off, and Cadillac refused to fix it; intentionally trying to run the timer out on the 5year/70,000 powertrain warranty. It's a known issue, all over the internet. In fact, they recalled several models due to the same problem. "19V-086 / N182182760 Recall Summary If the steering assistance is not available, extra effort would be required to steer the vehicle, and this would increase risk of a crash. General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, and 2017 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles." I've reset the light several times, and it usually stays off for several days before returning. This sounds like a software problem, but Cadillac has not taken any steps to fix the issue. It is dangerous for any reduction in steering, especially during winter or at highway speed. It's also dangerous to disable air conditioning, as during the summer, the temperature can reach above 140 F inside a vehicle. If a driver were to have a medical event in a parking lot, or fall asleep with the vehicle on while simply waiting for somebody -- while assuming the air conditioner would keep them cool and comfortable -- within 10 minutes the temperature could reach 130+ degrees, and into the 150s in California or Las Vegas. Software should never reduce steering assist, or disable the air conditioner automatically. I would like a recall to be issued regarding this problem. I don't know if they have designed the system to fail right at the warranty or just after, but it certainly appears that way. Please look into the matter. Cadillac has refused to repair under warranty. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.

NHTSA ID

11626377

Incident

Jul 15, 2024

The contact owns a 2020 Cadillac XT6. The contact received notification of NHTSA Campaign Number: 22V709000 (Back Over Prevention); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID

11616026

Incident

Jul 15, 2024

The contact owns a 2020 Cadillac XT6. The contact stated that while the vehicle was parked, the instrument panel went black. The vehicle was restarted, and the instrument panel lights illuminated but the vehicle began shaking from the driver's side. The check oil warning light was illuminated. Additionally, the contact stated that she felt heat coming from where her feet were located under the dashboard. The vehicle was taken to a dealer where it was diagnosed and determined the driver's speaker was inoperable due to unknown electrical fault and needed to be replaced. The vehicle was not repaired. On another occasion, while driving 10 MPH, the contact observed a dripping noise coming from underneath the vehicle. The check oil warning light was illuminated. The vehicle was taken to a dealer where it was diagnosed that the oil needed to be changed. Additionally, while driving at 60 MPH she observed condensation on the outside of the windshield. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 50,753.

NHTSA ID

11583635

Incident

Jun 2, 2023

Mileage

50,753 mi

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.

NHTSA ID

11578590

Incident

Mar 13, 2024

I got this vehicle and have had the body control module replaced 3 times the first time was as soon as it got out the dealer lot the turn signals were not working so I took it back a week later and they had to replace the body control module and since then they have replaced it 3 times

NHTSA ID

11576586

Incident

Dec 12, 2023

The contact owns a 2020 Cadillac XT6. The contact stated that after entering the front passenger’s side of the vehicle, she observed water leaking into the interior. After a visual inspection, the contact discovered water damage to the floorboards. The vehicle was taken to the dealer, who determined that the cabin filter was clogged and needed to be replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer after the contact smelled a burning odor in the interior of the vehicle. The dealer determined that water had damaged several electrical components inside the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 30,000.

NHTSA ID

11548403

Incident

Dec 15, 2022

Mileage

30,000 mi

The contact owns a 2020 Cadillac XT6. The contact stated that the service stabilitrak warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the power converter failed and needed to be replaced. The vehicle was repaired however, the failure recurred. The contact stated that after she activated the A.C. unit, the vent blew heat. The vehicle was taken back to the dealer where it was then diagnosed but the contact was unsure of the failure. Additionally, the contact stated that the front passenger side door latch failed to latch closed. The dealer was notified of the failure and the contact was advised to call a tow and bring the vehicle in for diagnoses. The vehicle was not diagnosed or repaired. The contact then stated that after the vehicle was shifted in a parked position and idled, the vehicle loss power. The service stabilitrak warning light illuminated. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 50,800.

NHTSA ID

11523867

Incident

May 24, 2023

Mileage

50,800 mi

The contact owns a 2020 Cadillac XT6. The contact stated while driving approximately 60 MPH, the contact heard an abnormal "popping" sound and seconds later there was a loud bang. The contact pulled over and inspected the vehicle looking for tire damage, then the contact noticed that there was a large concentration of glass on the roof of the vehicle. The contact observed that the rear stationary panel of the panoramic sunroof had disintegrated. The contact stated no warning light was illuminated. The contact took the vehicle to a glass repair shop where the technician advised the contact that there was no evidence of a rock or other object striking the sunroof to cause the glass to shatter. The vehicle was repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 28,500.

NHTSA ID

11513501

Incident

Mar 15, 2023

Mileage

28,500 mi

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

NHTSA ID

11503842

Incident

Jan 26, 2023

While reversing at a downward slope, sudden strong braking will occur. It does not always happen but when it does it is very alarming and loud. I’m guessing something is wrong with the Automatic Emergency Braking system. There is no warning prior to it happening. I fear these occurrences may cause an accident if I’m not wanting to brake at that moment. I have made Michael Hohl Dealership in Carson City NV aware of this issue but they don’t have a remedy for the problem.

NHTSA ID

11492475

Incident

Nov 3, 2022