Other / unspecifiedPowertrain (other)Suspension
Filed May 20, 2026
UNKNOWN, The transmission slips,it wont drive now and my wheel barrings nearly snapped
- NHTSA ID
- 11738945
- Incident
- May 14, 2026
2017 Cadillac CT6 Powertrain (other) Problems
Owner-reported complaints naming the powertrain system, filed with NHTSA
Data refreshed
Powertrain (other) reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
10
Latest May 20, 2026
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
59%
of 17 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
0
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0
What this page shows
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials. Every record below is an owner-reported complaint about the 2017 Cadillac CT6 submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 10 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Owner reports naming powertrain
Shown in the owner’s own words, exactly as filed
Driver assistancePowertrain (other)
Filed Jan 29, 2026
The vehicle experiences harsh shifting, surging, and jerking forward during normal driving conditions. The behavior has occurred repeatedly over several years and has been confirmed by the dealership. Multiple repair attempts, including transmission-related work, have not resolved the issue. The vehicle has surged forward unexpectedly, creating near-miss accident situations. I no longer feel the vehicle is safe to operate.
- NHTSA ID
- 11714281
- Incident
- Jun 15, 2018
Driver assistanceElectricalPowertrain (other)
Filed Nov 21, 2024
These vehicles have an issue tbat GM is aware of, with their 8 speed automatic transmissions which are used in multiple GM vehicles and these cause safety issues because for instance my vehicle switches gears randomly almost causing a wreck, and shuttering, and even slipping and when this happens the cars traction control light is engaged shutting it off, active steering is also shut off due to these on going issues. Im in a cadillac group and hundreds of us have similar issues.
- NHTSA ID
- 11626548
- Incident
- Oct 15, 2024
BrakesPowertrain (other)
Filed Jun 22, 2024
Transmission - Jerks and studders (hesitation) in the course of normal driving. Brakes - Makes a squealing noise which has gotten louder over time.
- NHTSA ID
- 11595865
- Incident
- Sep 29, 2023
Powertrain (other)
Filed Jul 16, 2023
The car is equipped with an 8-Speed Automatic Transmission which is frequently very hard shifting from 1st to 2nd gear. The car has been to my local Cadillac Dealer twice for this problem; they reply this is a know problem, and a normal condition, but the problem is getting worse. I'm concerned for the future and afraid of an accident because of a transmission failure.
- NHTSA ID
- 11532575
- Incident
- Jul 11, 2023
Powertrain (other)
Filed Oct 10, 2022
I was driving the vehicle heading to the interstate, and my speed was about 15 MPH, as I merge onto the highway and accelerated I felt the transmission shudder, and lag with a humming noise. It felt like the transmission mission was slipping and shaking with no acceleration power. I had to keep hitting the gas pedal to try and make the transmission engage. Very Dangerous! The transmission would also throw you back and jerk when accelerating violently. The transmission lunges forward and jerks into gears when starting from 0 mph.
- NHTSA ID
- 11488586
- Incident
- Sep 9, 2022
Powertrain (other)
Filed Oct 10, 2022
While driving the vehicle with auto stop engaged, the auto stop was malfunctioning. When I get to a red light or stop sign vehicle would engage auto stop, once I let my feet off the gas pedal and accelerate, the vehicle would jerk out of gear then slip /drag then engage with a loud hit as if someone rear-ended me. The problem was duplicated and confirmed by the dealership. There has been no outside inspection other than the dealership. No warning lights messages prior to failure. In addition, the Auto-stop working with a week of this complaint shortly therafter.
- NHTSA ID
- 11488585
- Incident
- Oct 5, 2022
ElectricalPowertrain (other)
Filed Mar 23, 2022
The contact owns a 2017 Cadillac CT6. The contact stated that while driving at various speeds, the vehicle would hesitate upon depression of the accelerator pedal without warning. The contact had taken the vehicle to a dealer where they initially changed the transmission fluid and reprogrammed the transmission module; however, the failure persisted. The contact returned the vehicle to the dealer and she was informed that the torque converter was defective; but that the cost to replace the transmission was expensive. She was advised to bring the vehicle back to dealer each time the hesitation occurred to have the transmission fluid replaced. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 14,000.
- NHTSA ID
- 11458017
- Incident
- Jan 1, 2021
- Mileage
- 14,000 mi
Powertrain (other)
Filed Mar 29, 2021
MY 2017 CADILLAC CT6 3.0 TT PREMIUM LUXURY HAS HAD THIS ISSUE SINCE I PURCHASED IT. DEALERSHIP STATE THAT THIS IS NORMAL AND I SHOULD LIVE WITH IT. IF I KNEW THIS BEFORE I PURCHASE THIS $98,000 VEHICLE I WOULD HAVE GONE MERCEDES-BENZ. THE ISSUES WITH THE 8-SPEED 8L90 GM TRANSMISSION ARE TWO-FOLD. FIRST, THE TRANSMISSION SHUDDERS FREQUENTLY. SECONDLY, THE SHIFTS ARE VERY HARSH BETWEEN FIRST TO SECOND, AND THEN SECOND DOWN TO FIRST, ESPECIALLY WHEN ACCELERATING AND THE TRANSMISSION IS UPSHIFTING OR DECELERATING AND THE TRANSMISSION IS DOWNSHIFTING. THESE CONDITIONS ARE MOST COMMONLY OBSERVED UNDER LIGHT AND MEDIUM THROTTLE APPLICATIONS, AND AS OFTEN DURING FULL THROTTLE APPLICATIONS. I HAVE HAD THE TSB 18-NA-335 DONE AND ISSUES STILL REMAIINS.
- NHTSA ID
- 11405442
- Incident
- Mar 10, 2020
- Mileage
- 500 mi
EnginePowertrain (other)
Filed Jun 12, 2020
WHEN AUTO STOP IS ENGAGE TAKING YOUR FOOT OFF THE BRAKE PEDAL FROM A COMPLETE STOP WHEN THE ENGINE STARTS BACK UP IT HAS A HARSH JERK SOMETIMES, IT FEELS AS THOUGH SOMEONE HAS HIT YOU FROM THE REAR. THIS BEEN GOING ON FOR THREE YEARS THE CAR HAS BEEN IN SERVICE TWICE FOR THIS PROBLEM THE SERVICE TECHNICIAN CANNOT DUPLICATE IT. *TR
- NHTSA ID
- 11328598
- Incident
- Jun 3, 2020
- Mileage
- 6,000 mi
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .