2019 Cadillac CT6 Reliability Data: Problems & Recalls
Caution The 2019 Cadillac CT6 has a complaint index of 50, ranking 3rd worst out of 5 model years, with a Caution verdict. It carries 17 complaints and 4 recalls, with transmission and powertrain issues making up 82% of complaints.
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
YearToAvoid Scorecard
- Complaint Index
- 50/100
- #3 of 5 CT6 years
- Verdict
- Caution
- vs. other years of this model
- Complaints
- 17
- unique NHTSA reports
- Recalls
- 4
- distinct NHTSA campaigns
- Crashes
- 0
- reported in complaints
- Fires
- 0
- Injuries
- 0
- Top issue
- Transmission & Powertrain
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 21
- 18 city / 26.5 hwy
- Injuries / deaths
- 0 / 0
Top 2019 Cadillac CT6 problems
Share of this year’s NHTSA 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%)
A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.
What owners report
- Brake system failed to engage, with the brake booster diagnosed as failed at low mileage.
- Side view mirrors stayed closed or up after putting the vehicle in gear, despite the software not being designed to auto-open them.
- ABS, StabiliTrak, and cruise control error messages appeared together, resembling symptoms from an earlier ABS recall.
- Wheels locked up while driving with the traction control warning light on, along with hard transmission shifts and a 4WD service message.
- Vehicle rolled backward 1 to 2 feet after parking and exiting, requiring the driver to catch it with the brake pedal.
- Owners reported waiting for recall repair parts that were unavailable for the transmission control module software recall.
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?
- Among the 5 model years with data, the 2019 CT6 ranks 3rd worst with a complaint index of 50 and a Caution verdict. It has more reported issues than the 2017 and 2018 model years but fewer than 2016 and 2020.
- What problems does the 2019 Cadillac CT6 have?
- NHTSA lists 17 complaints for the 2019 CT6, with 82% tied to the transmission and powertrain. Brakes account for another 12% of complaints, with a median failure mileage of 1,800 miles for that category.
- Does the 2019 Cadillac CT6 have any recalls?
- Yes, NHTSA lists 4 recall campaigns for the 2019 CT6 covering transmission and powertrain, brakes, electrical system, and seat belts. None are do-not-drive recalls.
- What year Cadillac CT6 should I avoid?
- NHTSA data marks 2016 and 2020 as Avoid years with complaint indexes of 100 and 75. The 2018 model year is rated Best with a complaint index of 0.
- What is the median mileage for transmission failures in the 2019 CT6?
- NHTSA complaint data shows a median mileage of 65,000 miles for transmission and powertrain issues in the 2019 CT6.