2017 Cadillac CT6 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
17 owner complaints analyzed
1 distinct recall campaigns
10,000 mi median reported failure mileage
Scope: 2017 model year. Data snapshot: . 4 complaints include usable failure mileage.
Most common problems
Power Train is the most frequently named component, appearing in 10 of 17 complaints (58.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Transmission and shifting | 9 | 52.9% |
| Braking behavior | 2 | 11.8% |
| Steering behavior | 2 | 11.8% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Power Train | 10 |
| Electrical System | 4 |
| Service Brakes | 2 |
| Vehicle Speed Control | 2 |
| Engine | 1 |
| Forward Collision Avoidance: Adaptive Cruise Control | 1 |
| Fuel/Propulsion System | 1 |
| Steering | 1 |
Power Train: 10; Electrical System: 4; Service Brakes: 2; Vehicle Speed Control: 2; Engine: 1; Forward Collision Avoidance: Adaptive Cruise Control: 1; Fuel/Propulsion System: 1; Steering: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 1 |
| 150,000 and above | 0 |
Under 25,000: 3; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 1; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (3). 13 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 2 |
2020: 2; 2021: 3; 2022: 3; 2023: 2; 2024: 2; 2025: 3; 2026: 2
Pattern summary
Power Train leads the component reports. Transmission and shifting appears in 9 complaint narratives. Braking behavior appears in 2 complaint narratives. Steering behavior appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11405442 · 2021-03-29 (March 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 DOWNSHIF…
Owner-reported narrative. 500 miles reported. Look up ODI 11405442 at NHTSA ↗
Owner report 11458017 · 2022-03-23 (March 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…
Owner-reported narrative. 14,000 miles reported. Look up ODI 11458017 at NHTSA ↗
Owner report 11328598 · 2020-06-12 (June 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
Owner-reported narrative. 6,000 miles reported. Look up ODI 11328598 at NHTSA ↗
Owner report 11595865 · 2024-06-22 (June 22, 2024)
Transmission - Jerks and studders (hesitation) in the course of normal driving. Brakes - Makes a squealing noise which has gotten louder over time.
Owner-reported narrative. Look up ODI 11595865 at NHTSA ↗
Owner report 11422881 · 2021-06-30 (June 30, 2021)
Steering rack bound up and became extremely difficult to move, causing vehicle to leave roadway. Power assist failed and manual mode would not allow steering to left making it nearly impossible to control direction of vehicle.
Owner-reported narrative. Look up ODI 11422881 at NHTSA ↗
Owner report 11626548 · 2024-11-21 (November 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.
Owner-reported narrative. Look up ODI 11626548 at NHTSA ↗