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.
2016-2020 · 5 model years
Cadillac CT6 Problems by year
Owners have filed 78 complaints about the Cadillac CT6 across 5 model years, and it has 8 recalls. The 2016 has the most complaints once its age is allowed for (11). The most reported problem area is the transmission & drivetrain, followed by the brakes.
- Complaints
- 78
- Recalls
- 8
- Crashes
- 5
- Fires
- 0
- Injuries
- 2
- Deaths
- 1
CT6 complaints by model year
Highlighted: the year with the most complaints for its age. Older vehicles have had more time to collect complaints - the Safety Index grade allows for that.
Most common CT6 problems
Cadillac CT6 recalls 8
General Motors, LLC (GM) is recalling certain 2016-2017 Cadillac CT6 vehicles. The Park/Position lights may be excessively bright. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps...
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...
General Motors LLC (GM) is recalling certain 2020 Cadillac CT6 vehicles equipped with dealer-installed accessory 20" x 8.50" wheels (RPO 5JO or SHH). The tire pressure monitoring system (TPMS) sensors use the incorrect wireless radio frequency and cannot...
Covers2020 Cadillac CT6
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)...
Covers2019 Cadillac CT6
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...
General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CT6 vehicles. The inboard child seat anchorage bars may have had excess structural adhesive applied during assembly, which can interfere with the installation of a child seat. As such, these...
General Motors LLC (GM) is recalling certain model year 2016 Cadillac CT6 vehicles manufactured July 21, 2016, to July 22, 2016. The bolt that connects the front passenger seat belt webbing to the seat's anchor plate may be missing. Without the bolt, the...
Covers2016 Cadillac CT6
Latest CT6 complaints
I am submitting this safety defect complaint to the National Highway Traffic Safety Administration (NHTSA) regarding the unexpected failure of the front passenger head restraint in my Cadillac CT6-V. My vehicle recently underwent infotainment system repairs at Crest Cadillac, an authorized GM dealership. The passenger seat had not been occupied for several months. When a passenger recently sat in the seat, the head restraint unexpectedly fell over and became nonfunctional. There was no collision, impact, misuse,...
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or known event explaining this failure. The vehicle is currently at an authorized GM dealership for evaluation. I am concerned that this failure may be associated with the recent dealership repairs or an underlying component defect. More concerning, two individuals in an online Cadillac CT6 owners' group stated that this particular component fails more frequently than one would expect. These reports suggest a potentially recurring safety defect rather than an isolated incident. Federal Motor Vehicle Safety Standard No. 202a (49 CFR § 571.202a) establishes mandatory head restraint safety requirements intended to reduce neck injuries during collisions. A broken head restraint compromises occupant protection and increases the risk of serious injury during rear-end collisions. I request that NHTSA investigate this failure, review similar complaints involving Cadillac CT6 vehicles, and determine whether a systemic manufacturing, design, or servicing defect exists that warrants a safety recall or corrective action. I also request preservation of the failed components, dealership service records, and diagnostic findings. This is a serious failure of federally regulated occupant safety equipment, not a cosmetic or routine warranty issue.
The contact owns a 2019 Cadillac CT6. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly shifted hard, and the service warning light was illuminated. The contact stated that while accelerating and decelerating, the vehicle shuddered and hesitated. There was smoke coming from the vehicle. The vehicle was taken to the dealer on several occasions. The dealer diagnosed the vehicle with transmission failure. The contact was informed that the transmission needed to be replaced. The contact stated that the failure was associated with a previous transmission software update. The failure mileage was approximately 47,000.
When vehicle was purchased new there was a slight bearing wear noise at the front driver side, which grew louder with years. Noise synchronized with tire rolling rpm. Replacing (my self) front trans axle, the brake pads, shaving rotors, & wheel hub bearing did not fix noise. Next; Dealer shop reported that the AWD front transfer case (differential) had a bad bearing AND that this was a common problem with the model car. $1600 repair bill.
During refueling the gas station pumping nozzle would shut off indicating a full gasoline fuel tank; but, the dash board fuel gage indicated the fuel was not full. Had to dribble in fuel to fill. Dealer Mechanic found: Crash roll over gasoline vent safety valve was stuck in the crashed roll over cut off state. No gas tank ventilation. This caused back pressure in car gasoline tank to shut off gas station filler nozzle as though the car was full . Entire gas tank had to be replaced. Still under warranty.
On July 22, 2025, at 20,245 miles, I brought my 2019 Cadillac CT6-V to an authorized dealer while still under factory warranty, reporting hard shifting during both acceleration and deceleration - the exact symptom described in GM Special Coverage Bulletin N242480631, which addresses a defective transmission control valve subject to premature wear (P0747 diagnostic condition). The dealer was unable to diagnose or repair the issue at that visit and returned the vehicle to me without resolving the defect. The same...
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condition recurred. I brought the vehicle back to the dealer (Crestview Cadillac, Rochester Hills, MI) on May 26, 2026. The vehicle remained at the dealership for over three weeks before any loaner vehicle was offered. Replacement parts were reported as received on July 3, 2026, and again on July 17, 2026, and as of this filing the vehicle has still not been returned to me - over two months out of service. The repair estimate is approximately $12,000, covering the transmission control valve, a power transfer case, and a high-pressure oil pump. GM Special Coverage Bulletin N242480631 states that the control valve body replacement is covered at no charge for vehicles that return with a P0747 condition after the TCM software update, for 15 years or 150,000 miles from the in-service date, regardless of ownership. My vehicle meets these conditions. Despite this, GM's case team has offered only a $4,500 "goodwill" credit plus reward points toward the total repair, characterizing this as a discretionary gesture outside of warranty, and has stated this is their final position. I am filing this complaint because: (1) the original recall/coverage remedy did not resolve the underlying defect when I first brought the vehicle in under warranty, resulting in continued use of a vehicle with an unrepaired safety-related transmission defect until the condition worsened; (2) GM's dealer network has taken an extended and, in my view, excessive amount of time to complete.
Stuck Thermostat. Vehicle not achieving operating temperature in the correct time. ALL 3 of the people I know with CT-6's had the exact same issue this year.
Questions about the Cadillac CT6
Which Cadillac CT6 years have the most problems?
Which Cadillac CT6 years have the fewest complaints?
Among model years that have been on the road for at least three years, 2018 have the best Safety Index - the fewest complaints, crashes and recalls for their age compared with other CT6 years. Always check the exact vehicle's recalls by VIN before you buy.
What are the most common Cadillac CT6 problems?
Across every model year, owners report problems with the transmission & drivetrain (47), brakes (8), engine & cooling (8) most often.
How many recalls does the Cadillac CT6 have?
NHTSA lists 8 recalls across all Cadillac CT6 model years. Each year's page lists the recalls for that year; check your own vehicle by VIN at nhtsa.gov/recalls to see whether the repair has been done.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data