2018 Cadillac CT6
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › Cadillac › CT6 › 2018
These records cover every 2018 Cadillac CT6. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Owner complaints
9 complaints
What owners report most
Latest complaints
- Power train
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…
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.
- Fuel/propulsion system
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…
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.
- Engine
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.
- Power train
Front differential case ripped in half and separated from the ring gear. The broken chunk of differential case and pinion was still attached to the driveshaft while coming to an abrupt stop. Damage done within driveshaft tunnel. No warning, no vibration, no cause for concern, just catastrophic…
Front differential case ripped in half and separated from the ring gear. The broken chunk of differential case and pinion was still attached to the driveshaft while coming to an abrupt stop. Damage done within driveshaft tunnel. No warning, no vibration, no cause for concern, just catastrophic failure. Differential and propeller shaft were replaced by an independent mechanic. Cadillac has not been notified as of today, receipt for repair available upon request.
- Steering · Structure › Body · Suspension
Yes my car was sold to me with structural damages, and I was told any of this when I purchased it!!!!
- Exterior lighting
My driver front head light IS partly not working. I beleive it IS an led light and the fact that it no longer works IS not what I expected from led, it should last much much longer than 5 years; after all it IS a cadillac and it shouldn't have happened. I requested cadillac corporate to assist me…
My driver front head light IS partly not working. I beleive it IS an led light and the fact that it no longer works IS not what I expected from led, it should last much much longer than 5 years; after all it IS a cadillac and it shouldn't have happened. I requested cadillac corporate to assist me with this and all they would do for me IS give me a $250.00 credit towards the repair that IS aprox. $1,800.00 this head light IS defective and they should do good by me, this IS my 5TH. Car with them. Thank you for your help [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(B)(6).
- Engine · Service brakes
The brake makes a rattling and metal grinding sound, the dealership said nothing is wrong with the brakes, still problematic. The transmission shifts too hard. Dealer said nothing wrong. Yet cat kicks too hard.
- Forward collision avoidance › Adaptive cruise control · Lane departure › Assist · Steering
On mar 1, 2021 while driving super cruise mode, my car jerked violently to the left almost striking another car. I was on the fl turnpike about 20 miles north of orlando heading south. The highway was increasing from 2 lane to 3 lane southbound and I was in the right lane. When I entered the lane…
On mar 1, 2021 while driving super cruise mode, my car jerked violently to the left almost striking another car. I was on the fl turnpike about 20 miles north of orlando heading south. The highway was increasing from 2 lane to 3 lane southbound and I was in the right lane. When I entered the lane transition, the car drifted right . As the car came upon the new white line the car about centered it. The car turned hard left, and turned off super cruise. Fortunately, I was able to grab the steering wheel and correct the turn. We did not crash, but it was most unsettling.
- Engine · Fuel/propulsion system · Power train
My cadillac CT6 (2018) quit working while on the expressway. I was in the middle of no where, in georgia. This made for a very dangerous situation as the car suddenly lost all power going to the wheels while driving at approx. 75 mph. I was barely able to get around traffic to be able to pull over…
My cadillac CT6 (2018) quit working while on the expressway. I was in the middle of no where, in georgia. This made for a very dangerous situation as the car suddenly lost all power going to the wheels while driving at approx. 75 mph. I was barely able to get around traffic to be able to pull over as there was 0 power. When the tow truck from cadillac arrived we were told we were not allowed to ride in the truck because of covid. We were made sit in the rain in 40 degree weather while I spoke with my home cadillac dealer as well as the nearest to where I was. Both dealers were extremely unhelpful, my car IS still under factory warranty and was just in for transmission work about a week prior (i've taken the car in three times for transmission issues and it still has something wrong with it. I was told by both cadillac dealers that they would not help because they needed to 'diagnose' the car and couldn't until five days later. I was offered an uber ride in a city that had 0 zero uber, taxi or lift services. I was hung up on by these people, they were rude and this was on christmas eve. I had to walk to a car rental company and pay over $400 dollars so I could spend christmas with my family.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11011989This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011900This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 11011896This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
- 11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
- 11011782This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.
- 11011709This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11011444This Preliminary information communicates to the dealer a process for accessing the procedure to add attachments to a GM technical assistance case using the dealer case management tool.
- 11011436This Preliminary information communicates for Technicians installing a Service Replacement Transmission Assembly to contact Technical Assistance to make sureunit is not suspect of a snap ring concern prior to installation.
- 11011420This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
- 11011406This Preliminary information communicatesa "Forward Collision System Reduced" message displayed on the DIC when theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".
- 11011205This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- 11011119This Preliminary information communicates to dealers GM is working on a solution for outdated Apps
- 11010576This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center (WPC) must be shipped using Central Transport. Hazardous materials should never be sent by air transportation to the WPC.
- 11010545This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
- 11010495This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only).
- 11010493This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- 11010491This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
- 11010490This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11010488This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
- 11010421This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 11009764This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
- 11009756This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
- 11009532This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11009531This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11009170This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
- 11009156This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
- 11009088This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
- 11009039This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
- 11009037This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
- 11008986This Preliminary information communicatesdirection and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
- 11008956This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
- 11008906This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
- 11008898The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
- 11008893This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
- 11007936This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11007935This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11007771This Preliminary information communicates diagnostic information for vehicles with transmission noise.
- 11007744This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
- 11007743This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
- 11007721This service bulletin provides information on AGM batteries that require less frequent charging in storage.
Every Cadillac CT6 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.