Most common 2019 Cadillac CT6 problems
Share of the 17 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Cadillac CT6 complaints by model year
Best CT6 years: 2018. Years to avoid: 2019. Compare all years →
2019 Cadillac CT6 recalls (4)
Power train › Automatic transmission
General Motors LLC (GM) is recalling certain 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed transmission. The transmission may become damaged internally and cause the wheels to lock-up.
Remedy: Dealers will install transmission control module monitoring software, free of charge. Owner notification letters were mailed April 7, 2025.
Service brakes
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 1500, Cadillac CT6, and GMC Sierra 1500 vehicles. Due to an Electronic Brake Control Module (EBCM) software error, the vehicle's Electronic Stability Control (ESC) and Antilock Brake System (ABS) may become disabled.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began February 4, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020, Cadillac customer service at…
Exterior lighting › Turn signal › Switch
General Motors LLC (GM) is recalling certain 2019 Cadillac CT6 vehicles. Rotation of the steering wheel will not automatically cancel the turn-signals from flashing. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices and Associated Equipment."
Remedy: GM has notified owners, and dealers will replace the turn-signal switch. The recall began March 11, 2019. Owners may contact Cadillac customer service at 1-800-458-8006. The Cadillac number for this recall is N182207090.
Seat belts › Rear/other
General Motors LLC (GM) is recalling certain 2018-2019 Cadillac CT6, Escalade ESV, Chevrolet Suburban, Volt, and GMC Yukon XL vehicles. Certain second-row or third-row rear seatbelts retractor assemblies may not automatically lock when the seatbelt is fully pulled out of the retractor, possibly preventing a child seat from…
Remedy: GM will notify owners, and dealers will inspect the rear seatbelt retractors and replace them if necessary, free of charge. The recall began November 7, 2018.
What 2019 Cadillac CT6 owners say
Transmission & drivetrain
The contact owns a 2019 Cadillac CT6. The contact received notification of NHTSA Campaign Numbers: 25V148000 (POWER TRAIN); however, the part to do the recall repair was not yet available. The contact stated that upon parking and exiting the vehicle, the vehicle rolled backwards approximately 1 to 2 feet. The driver's door was ajar with the driver's foot near the vehicle, and the contact was able to depress the brake pedal and stop the vehicle. The contact pressed the Push to Start button, and after several attempts, moved the column shifter back and forth until the vehicle shifted to drive(D). There was no warning light illuminated. The contact stated that on a separate occasion, while in line at the drive-thru, the column shifter was stuck on neutral(N). After several attempts, the contact was able to move the gear shifter to drive(D). …
The contact owns a 2019 Cadillac CT6. The contact stated upon parking and exiting the vehicle, the vehicle started to roll back 1 to 2 feet. The contact stated that his foot was still near the vehicle, and the contact was able to depress the brake pedal, and the vehicle stopped. The contact pressed the Push to Start button and moved the column shifter back and forth until the vehicle successfully shifted to drive(D). The contact then shifted to park(P). Additionally, the contact engaged the parking brake. The contact had received notification of NHTSA Campaign Number: 25V148000 (Power Train); and the contact related the failure to the recall; however, the part to do the recall repair was not yet available. The local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. …
2019 Cadillac CT6 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | 10-speed automatic | RWD | 24 / 34 / 28 |
| 3.6L 6-cyl | 10-speed automatic | AWD | 18 / 27 / 21 |
| 3.0L 6-cyl turbo | 10-speed automatic | AWD | 18 / 26 / 21 |
| 4.2L 8-cyl turbo | 10-speed automatic | AWD | 14 / 25 / 17 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2019 Cadillac CT6 a good car?
Based on 17 owner complaints filed with NHTSA, the 2019 CT6 rates use caution: 2.4× as many complaints as a typical year of the CT6 at the same age. It is one of the CT6 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2019 Cadillac CT6?
The transmission & drivetrain — 14 complaints, 82% of all complaints for this model year. Next are the brakes (2) and windows, wipers & sunroof (1).
How many recalls does the 2019 Cadillac CT6 have?
There are 4 recalls for the 2019 Cadillac CT6, the most recent from March 6, 2025 (automatic transmission). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Cadillac CT6?
The best years by complaints, compared at the same age, are 2018. Years to avoid or approach with caution: 2019. See the full Cadillac CT6 years comparison.
At what mileage do 2019 Cadillac CT6 problems happen?
The median mileage reported in complaints is about 58,000 miles; 33% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.