2019 Cadillac CT6 Problems, Recalls & Reliability
Verdict
AvoidComplaint Index
75/100
#2 most-complained of 5 CT6 years
The 2019 Cadillac CT6 has a complaint index of 75, ranking 2nd worst among 5 model years with data, earning an Avoid verdict. Transmission & Powertrain issues make up 82% of complaints, with 4 recalls including a 10-speed transmission fault.
- Complaints
- 17
- Recalls
- 4
- Crashes / fires
- 0 / 0
- Injuries / deaths
- 0 / 0
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 21
- 18 city / 26.5 hwy
Top 2019 Cadillac CT6 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Transmission & Powertrain14 (82%)
- Brakes2 (12%)
- Electrical System1 (6%)
- Collision Avoidance & Cameras1 (6%)
- Visibility & Wipers1 (6%)
What owners report
- Owners report the transmission shifting hard while driving, sometimes accompanied by a 4WD service message and traction control warning light.
- Some vehicles rolled back 1 to 2 feet after being parked and shifted out of gear, even after the driver exited the vehicle.
- Owners report the brake booster failing and the brake system failing to engage while driving, at a median mileage of 1,800 miles for brake-related failures.
- Side view mirrors have stayed in the closed or up position after shifting into gear and driving off, which owners say GM did not design software to prevent.
- Multiple owners say parts for the 25V148000 transmission recall were unavailable and that GM exceeded a reasonable time to complete the repair.
2019 Cadillac CT6 recalls
4 NHTSA recall campaigns list this model year.
- NHTSA 25V148000Mar 6, 2025Transmission & Powertrain90,081 vehicles
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.
Risk: Wheel lock-up while driving increases the risk of a crash.
Remedy: Dealers will install transmission control module monitoring software, free of charge. Owner notification letters were mailed April 7, 2025. Owners may contact Cadillac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242480630.
- NHTSA 19V889000Dec 12, 2019Brakes463,995 vehicles
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. Furthermore, if this specific error occurs, the vehicle's diagnostics will not illuminate the instrument cluster ESC and ABS malfunction warning lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 126, "Electronic Stability Control" and 135, "Light Vehicle Brake Systems."
Risk: If the driver operates the vehicle unaware that ESC and ABS are not functioning, there is an increased risk of a crash.
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 1-800-333-4223, or GMC customer service at 1-888-988-7267. GM's number for this recall is N192268090.
- NHTSA 19V117000Feb 21, 2019Electrical System5 vehicles
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."
Risk: If the turn-signals do not automatically deactivate, the driver may fail to turn them off manually. An erroneous active turn-signal may mislead pedestrians and other drivers, increasing the risk of a crash.
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.
2019 Cadillac CT6 fuel economy and fuel cost
- City
- 18 MPG
- Highway
- 26.5 MPG
- Combined
- 21 MPG
- Annual fuel cost (EPA)
- $3,450
- 15,000 mi/yr
- Fuel
- Premium
- Current regular gas
- $4.32/gal
- national avg.
EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.
2019 compared with other CT6 years
Frequently asked questions
- Is the 2019 Cadillac CT6 reliable?
- Compared to other CT6 model years, the 2019 ranks 2nd worst out of 5 years with a complaint index of 75 and a verdict of Avoid based on NHTSA owner complaints and recalls.
- What is the biggest problem with the 2019 Cadillac CT6?
- Transmission & Powertrain issues account for 82% of complaints (14 of 17), with a median failure mileage of 65,000 miles, and are the subject of a 2025 recall for internal transmission damage.
- Does the 2019 Cadillac CT6 have a transmission recall?
- Yes. Recall 25V148000 covers 2019-2020 CT6 vehicles with a 10-speed transmission that may become internally damaged; GM's remedy is installing transmission control module monitoring software.
- How many recalls does the 2019 Cadillac CT6 have?
- NHTSA lists 4 recalls for the 2019 Cadillac CT6, covering transmission, brakes, electrical turn signals, and seat belts, none of which are do-not-drive recalls.
- How does the 2019 CT6 compare to other years?
- The 2018 CT6 is rated Best with a complaint index of 0, while the 2017 is rated Good at 25; the 2016 is worst at 100, and the 2019 sits at 75, just behind it.