Problems · NHTSA complaints

2017 Cadillac CT6 Hybrid problems

Owners filed 22 complaints about the 2017 Cadillac CT6 Hybrid with NHTSA between Aug 2017 and Apr 2025. The most-cited component is power train (14).

Complaints
22
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Power train14
  2. Electrical system4
  3. Structure2
  4. Service brakes2
  5. Engine2
  6. Vehicle speed control1
  7. Forward collision avoidance1
  8. Tires1
  9. Steering1
  10. Visibility1
  11. Visibility/wiper1
  12. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 29, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20172
20183
20193
20203
20213
20222
20232
20242
20252

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Power train

14 reports
“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 complaint to NHTSAFiled Nov 21, 2024Power train, Electrical system, Forward collision avoidanceODI 11626548

Electrical system

4 reports
“Water is getting into my trunk where the amp is and now my radio does not work only the back up camera. I cannot control the AC or turn on the air conditioner. Or is that how I would like it to blow”
Owner complaint to NHTSAFiled Mar 20, 2025Electrical system, StructureODI 11649426

Structure

2 reports
“TL* THE CONTACT OWNS A 2017 CADILLAC CT6. DUE TO THE CHANGES IN THE WEATHER, THE REAR WINDOW HAD A MARBLEIZED HAZE COVER, WHICH MADE VISIBILITY OUT OF THE WINDOW EXTREMELY DIFFICULT. THE VEHICLE WAS TAKEN TO SCHOOLEY CADILLAC (2101 45TH ST, WEST PALM BEACH, FL), BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE, BUT NO SOLUTION WAS OFFERED. THE FAILURE MILEAGE WAS 0. *TT VEHICLE PURCHASE DATE SHOULD BE ON OR BEFORE INCIDENT DATE. *JB”
Owner complaint to NHTSAFiled Dec 3, 2018Structure, Visibility/wiperODI 11155667

Service brakes

2 reports
“Transmission - Jerks and studders (hesitation) in the course of normal driving. Brakes - Makes a squealing noise which has gotten louder over time.”
Owner complaint to NHTSAFiled Jun 22, 2024Power train, Service brakesODI 11595865

Engine

2 reports
“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 complaint to NHTSAFiled Jun 12, 2020Power train, EngineODI 11328598

Vehicle speed control

1 report
“My vehicles transmission has a buzzing noise coming from the transmission oil pan and a gear shifting problem I took vehicle to Cadillac dealer whom can’t find the issue they changed the oil pan and the transmission lines . My vehicle is a 2017 Cadillac ct6 with 72027 miles . I’ve been to 4 Cadillac certified dealers and none can locate to problem . Thank you . Also I would like to add that Cadillac open road In New Jersey has taken off my splash guards and would not return them . I have a video of the manager claiming the car doesn’t come with guards and another stating the job he did not require him to remove splash guard but that is not true .”
Owner complaint to NHTSAFiled Apr 18, 2025Vehicle speed controlODI 11655564
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 29, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.