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2020 Cadillac XT6 transmission problems

10 complaints (25% of all complaints for this car).

owner complaints
10
of this car's complaints
25%
crashes
0
recalls
1

Which part fails

Owners did not name a specific part.

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Cadillac XT6 transmission problems in other years

20202021202220232024

Related recalls

Power train: automatic transmissionReported October 29, 2020 · 194,105 vehicles affected
What is wrong
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encore, Buick Enclave, Cadillac XT4, Chevrolet Blazer and GMC Acadia, and 2020 Cadillac XT6 vehicles. The start/stop accumulator endcap may have missing bolts.
Risk
Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may progress to a loss of propulsion, increasing the risk of a crash. A transmission fluid leak in the presence of an ignition source may increase the risk of fire.
Remedy
GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace it if any bolts are missing, free of charge. The recall began December 15, 2020. Owners may contact GMC customer service at 1‑888‑988‑7267, Buick Customer service at 1‑866‑608‑8080, Chevrolet customer service at 1‑800‑222‑1020 or Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is N202313440.

Recall number 20V668000 · Recall details

What 2020 Cadillac XT6 owners say

Most recent owner complaints, unedited.

Filed Nov 6, 2026 · Engine, Fuel system · 88,000 miles · SC

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 the federal safety agency 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.

Filed Oct 9, 2026 · Transmission · 16,000 miles · SC

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 the federal safety agency 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.

Filed Apr 24, 2026 · Transmission · PA

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.

Filed Feb 12, 2026 · Transmission · GA

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.

Filed Mar 16, 2025 · Transmission · NE

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.

Filed Mar 16, 2025 · Transmission · NE

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.

Filed Dec 23, 2024 · Engine, Transmission · 159,838 miles · OH

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.

Filed Nov 20, 2024 · Electrical, Steering · 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.

Filed Mar 20, 2024 · Electrical, Transmission · FL

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.

Filed Jan 26, 2023 · Transmission · WI

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

Questions about the 2020 Cadillac XT6 transmission

Does the 2020 Cadillac XT6 have transmission problems?

Owners have filed 10 complaints about the transmission of the 2020 Cadillac XT6, 25% of all its complaints.

At what mileage do 2020 Cadillac XT6 transmission problems start?

Not enough complaints include the mileage to tell.

Was there a recall on the 2020 Cadillac XT6 transmission?

Yes, 1 recall: 20V668000. Check your VIN to see if your car still needs the free repair.

Other 2020 Cadillac XT6 problems

Electrical 12Driver assistance 10Engine 6Fuel system 3Visibility 3Body 2Lights 2Steering 2Airbags 1Locks 1Tires 1

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