2020 Cadillac CT6 Owner Complaints
Complaint Summary
The 2020 Cadillac CT6 has 16 reported complaints.
- Top issues involve power train and service brakes.
Reliability Score
Reliability Score
Based on 16 complaints
Most Frequent Issues
POWER TRAIN
6 37.5%
SERVICE BRAKES
3 18.8%
SUSPENSION
1 6.2%
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 6.2%
UNKNOWN OR OTHER
1 6.2%
Quick Insights
The top category is POWER TRAIN, accounting for 37.5% of all complaints.
Owners have reported issues across 9 distinct vehicle systems.
Note: Complaint data reflects owner reports and may not always indicate a verified defect. Compare with Recalls and TSBs for a complete picture.
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What owners keep reporting on the 2020 Cadillac CT6
The 2020 Cadillac CT6 has 16 owner complaints in this dataset. POWER TRAIN is the most common complaint category, representing about 38% of the reports shown here.
Most common complaint categories
The top complaint groups for the 2020 Cadillac CT6 are POWER TRAIN (6), SERVICE BRAKES (3), SUSPENSION (1).
Are these complaints a serious red flag?
Potentially. 4 complaint reports involve higher-attention systems like brakes, steering, engine, powertrain, fuel, suspension, airbags, or electrical components, which is enough to justify a focused inspection.
What should buyers inspect on a used 2020 Cadillac CT6?
Start with the top complaint systems, compare them against the recall report, then inspect service records for evidence that those same areas were already repaired or monitored.
Detailed Complaint Log
Showing 9 of 9 systems
POWER TRAIN
6 Reports38% of totalPreviewing the first 2 complaint summaries.
The contact owns a 2020 Cadillac CT6. The contact received notification of NHTSA Campaign Number: 25V148000 (POWER TRAIN); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.
4/11/2025
See attached document for complaint.
5/22/2025
SERVICE BRAKES
3 Reports19% of totalPreviewing the first 2 complaint summaries.
CAR WAS ACQUIRED IN FEBRUARY AND SCRAPING NOISE IN FRONT BRAKES WAS NOTICED IN MAY. WAITED TO SEE IF THE NOISE WOULD GO AWAY BY ITSELF BUT BECAME LOUDER AND TOOK TO CADILLAC DEALER, MILLER CADILLAC IN ELLICOTT CITY MD TELEPHONE 410-750-1100 ON JULY 30. I WAS TOLD THE MECHANIC COULD HEAR THE NOISE BUT COULD NOT IDENTIFY THE SOURCE. HE CALLED GM AND THEY TOLD HIM THERE WAS TECH BULLETIN #PIC6290C INSTRUCTING THE MECHANIC TO TELL CUSTOMER THE NOISE IS NORMAL DOES NOT AFFECT SAFETY OR RELIABILITY OF THE CAR BUT WOULD NOT TELL THE MECHANIC THE CAUSE OF THE NOISE, WHICH IS GETTING WORSE! HOWEVER THE TECH BULLETIN STATES THE CAUSE WAS DETECTED AND CORRECTED ON OCTOBER 30, 2017! THE ISSUE OBVIOUSLY IS NOT CORRECTED AND IS NOT GOING AWAY. I AM CONCERNED THE CAR IS NOT SAFE TO DRIVE ESPECIALLY SINCE GM WOULD NOT TELL THE TECHNICIAN THE CAUSE SO I CAN MONITOR IT. THE BRAKE NOISE OCCURS ON ALL ROADWAYS WHETHER FAST OR SLOW WHETHER TURNING OR STRAIGHT AS CONFIRMED BY THE LOCAL MECHANIC. WHY WON'T GM INFORM OWNERS AND MECHANIC SO THEY CAN ASSESS THE PROBLEM AND UNDERTSAND THE DRIVING RISK?
8/3/2020
TL* THE CONTACT OWNS A 2020 CADILLAC CT6. THE CONTACT STATED THAT WHILE DEPRESSING THE BRAKE PEDAL, THERE WAS A LOUD SCREECHING SOUND COMING FROM THE WHEELS. THE VEHICLE WAS TAKEN TO WOODLAND CADILLAC LOCATED AT 530 QUALITY CIR #101, WOODLAND, CA 95776, TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE FRONT RADIAL ARMS WERE FAULTY AND NEEDED TO BE REPLACED. THE RADIAL ARMS WERE REPLACED HOWEVER, THE FAILURE PERSISTED. THE CONTACT INDICATED THAT THERE WAS A BLACK GREASY MATERIAL COMING FROM THE BRAKES AND COVERED THE WHEELS. THE CAUSE OF THE FAILURE WAS DETERMINED IT WAS THE BRAKE SHIELDS . THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 100.*DT*JB*DT*JB
11/12/2020
SUSPENSION
1 Report6% of totalPreviewing the first 1 complaint summaries.
TL* THE CONTACT OWNS A 2020 CADILLAC CT6. THE CONTACT STATED THAT WHILE DEPRESSING THE BRAKE PEDAL, THERE WAS A LOUD SCREECHING SOUND COMING FROM THE WHEELS. THE VEHICLE WAS TAKEN TO WOODLAND CADILLAC LOCATED AT 530 QUALITY CIR #101, WOODLAND, CA 95776, TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE FRONT RADIAL ARMS WERE FAULTY AND NEEDED TO BE REPLACED. THE RADIAL ARMS WERE REPLACED HOWEVER, THE FAILURE PERSISTED. THE CONTACT INDICATED THAT THERE WAS A BLACK GREASY MATERIAL COMING FROM THE BRAKES AND COVERED THE WHEELS. THE CAUSE OF THE FAILURE WAS DETERMINED IT WAS THE BRAKE SHIELDS . THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 100.*DT*JB*DT*JB
11/12/2020
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
1 Report6% of totalPreviewing the first 1 complaint summaries.
ON FRIDAY, NOVEMBER 13, 2020 I WAS STOPPED AT A STOPLIGHT IN MARYSVILLE, OHIO. IT APPEARED THAT TRAFFIC STARTED TO MOVE, SO I TOOK MY FOOT OFF THE BRAKE. ALMOST IMMEDIATELY THE EMERGENCY BRAKING FEATURE ENGAGED. WHILE THIS TENDS TO STARTLE YOU BECAUSE IT IS SO ABRUPT, ALMOST LIKE A HEAD-ON COLLISION, I PRESSED ON THE BRAKE. THE BRAKE DID NOT STOP THE CAR. IT WAS SIMILAR TO WHEN ANTI-LOCK BRAKING IS ENGAGED. THE BRAKES FELT LIKE THEY WERE PULSATING, SO THE CAR CONTINUED TO MOVE FORWARD UNTIL IT PRESSED UP AGAINST THE CAR IN FRONT OF ME. I HAVE HAD SOME INSTANCES WHERE WHEN BACKING UP, IN A COMPLETELY EMPTY PARKING LOT OR STREET AND THE CAR WILL BRAKE ON ITS OWN. THERE ARE NO POSTS, TREES OR ANY OBJECTS LIKE THAT ANYWHERE NEARBY TO TRIGGER THE BRAKING. THE MARYSVILLE (OHIO) POLICE DEPARTMENT RESPONDED TO THE ACCIDENT. THE FILE NUMBER FOR THE POLICE REPORT IS 20.01993. I WAS NOT CITED BECAUSE I WAS IN ESSENCE UNABLE TO STOP THE CAR. THERE WAS PLENTY OF TIME TO STOP THE CAR AS I DON'T BELIEVE I PRESSED THE ACCELERATOR AT ALL. THE CAR CURRENTLY HAS A WARNING APPEARING THAT INDICATES DRIVER ASSIST SYSTEM NEEDS SERVICE. I'M NOT SURE IT'S SAFE TO OPERATE THIS VEHICLE SINCE THIS HAPPENED WHILE IN TRAFFIC.
11/15/2020
UNKNOWN OR OTHER
1 Report6% of totalPreviewing the first 1 complaint summaries.
THE SUPER CRUISE SELF DRIVING FEATURE DOESN'T WORK AND ERROR MESSAGES CONTINUOUSLY FLASH ON DASHBOARD. IT HAS BEEN AT THE DEALER SINCE 12/16 (>9 WEEKS) WITHOUT ANY RESOLUTION. CALLS, EMAILS, POSTS TO CADILLAC AND GENERAL MOTORS GO UNANSWERED. DEALER TELLS ME CADILLAC ENGINEERS FROM CORPORATE COME AND GO WITH NO SOLUTION. I'VE MADE 2 PAYMENTS TO DATE WITHOUT MY CAR. I NOTIFIED GM FINANCIAL I WILL NO LONGER MAKE PAYMENTS ON A CAR I DO NOT HAVE. ALSO NO RESPONSE.
2/19/2021
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
1 Report6% of totalPreviewing the first 1 complaint summaries.
THE SUPER CRUISE SELF DRIVING FEATURE DOESN'T WORK AND ERROR MESSAGES CONTINUOUSLY FLASH ON DASHBOARD. IT HAS BEEN AT THE DEALER SINCE 12/16 (>9 WEEKS) WITHOUT ANY RESOLUTION. CALLS, EMAILS, POSTS TO CADILLAC AND GENERAL MOTORS GO UNANSWERED. DEALER TELLS ME CADILLAC ENGINEERS FROM CORPORATE COME AND GO WITH NO SOLUTION. I'VE MADE 2 PAYMENTS TO DATE WITHOUT MY CAR. I NOTIFIED GM FINANCIAL I WILL NO LONGER MAKE PAYMENTS ON A CAR I DO NOT HAVE. ALSO NO RESPONSE.
2/19/2021
FORWARD COLLISION AVOIDANCE: WARNINGS
1 Report6% of totalPreviewing the first 1 complaint summaries.
THE SUPER CRUISE SELF DRIVING FEATURE DOESN'T WORK AND ERROR MESSAGES CONTINUOUSLY FLASH ON DASHBOARD. IT HAS BEEN AT THE DEALER SINCE 12/16 (>9 WEEKS) WITHOUT ANY RESOLUTION. CALLS, EMAILS, POSTS TO CADILLAC AND GENERAL MOTORS GO UNANSWERED. DEALER TELLS ME CADILLAC ENGINEERS FROM CORPORATE COME AND GO WITH NO SOLUTION. I'VE MADE 2 PAYMENTS TO DATE WITHOUT MY CAR. I NOTIFIED GM FINANCIAL I WILL NO LONGER MAKE PAYMENTS ON A CAR I DO NOT HAVE. ALSO NO RESPONSE.
2/19/2021
STRUCTURE:BODY
1 Report6% of totalPreviewing the first 1 complaint summaries.
latelyi have had a problem with my back hatch door opening by it self the problem the last time it happen just before i enter a car wash now ive got a 7800 bill to repair it
2/24/2025
WHEELS
1 Report6% of totalPreviewing the first 1 complaint summaries.
The vehicle was shifting harshly and my wheels were experiencing lock up while in motion which was very dangerous. I experienced this on the parkway as well as streets and almost had a few accidents due to this problem. I drive my wife and children in this vehicle. Our safety and lives were put at risk. There were no warning lamps to advise of troubles. I also have some computer problems that are supposed to be addressed. Gm dealer has had my car for four months and have tried to replace valve four times and all four times the part they received was defective and unsuccessful. I have made many calls to GM and they are giving me the run around. Now they want to replace the entire transmission but wanted to use aftermarket part which more than likely is also defective. They are having a hard time obtaining a new transmission and also advised me I would be responsible for the cost of this replacement when they get a new transmission. At this point I am not willing to risk mine or my families life by driving this car after they try to replace transmission. Iâm also not willing or able to pay for this repair that was no fault of mine. I am not sure how to proceed in getting them to replace entire vehicle but that is the safest option at this point.
9/30/2025
Data and Methodology
Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.
What are the most common owner complaints for the 2020 Cadillac CT6?
Are complaints about the 2020 Cadillac CT6 a serious warning sign?
How should buyers use complaint data for the 2020 Cadillac CT6?
Are complaints about the 2020 Cadillac CT6 severe?
Complaint list entries are sourced from owner-submitted NHTSA ODI records.
Cadillac CT6: How should complaint data influence buying decisions?
Carfocal links complaint data directly to recall and maintenance routes for the same model year.
- Complaint entries
- 16
- Top-topic view
- 5 grouped topics shown
- Primary source
- NHTSA ODI owner complaint records
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