2020 Cadillac Ct5 Problems & Complaints

The contact owns a 2020 Cadillac CT5. The contact stated that while the vehicle was parked, the front passenger's side and the front driver's side door latches failed to unlock from the outside. In addition, the front passenger's side door latch failed to unlatch from the inside. The vehicle was taken to the dealer where it was diagnosed with a failed front driver's side door handle, a failed passenger's side door handle, and the front passenger's side door latch. The contact was informed that the front driver's side door handle, the passenger's front door handle, and the front passenger's side door latch needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The contact stated that the door indicator was illuminated. The vehicle was taken to the dealer, where it was diagnosed with a failed front passenger's side door latch and driver's front door latches. The contact was informed that the front driver's side door latch and the front passenger's side door latch needed to be replaced. The vehicle was not repaired. The contact was advised by an online forum to contact the NHTSA Hotline to report the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 70,000.

My front door latch doesn't work often leaving me locked out of the car. If the car is off I can use the auto roll down feature, but if the car is on i can't. This is a safety issue if I am in danger or my child is in the car.

The contact owns a 2020 Cadillac CT5. The contact stated that while driving at various speeds, the vehicle shuddered and experienced hard shifts intermittently. There was no warning light illuminated. The contact stated that the failure progressively worsened, and the vehicle made an abnormally loud sound while driving. The check engine warning light and the traction control warning light were illuminated. The contact stated that after taking the transmission apart, the contact became aware that cheaply made transmission parts had disintegrated, and there were metal shavings in the transmission. The contact determined that the transmission needed to be replaced; however, it was an extensive repair. The contact had received notification of NHTSA Campaign Number: 25V148000 (Power Train); however, the recall repair only involved the transmission control module monitoring software installation. The dealer was contacted and informed the contact that the transmission repair was not covered under the recall. The contact stated that the recall remedy was inadequate to correct the failure. The vehicle was not repaired. The manufacturer was contacted and informed the contact that the recall repair could not be performed on the vehicle due to the vehicle having a branded title. The failure mileage was approximately 578.

The electronic exterior door handle on my CT5 has failed and raises a concern of what if there was an accident and nobody was able to open the door if I was unconscious. I believe that having a key access is not enough and there should be a mechanical exterior door handle instead of an electronic handle that fails and is costly to repair.

While slowing down vehicle felt as if it was put into park momentarily, which cause car to slide on ice. After reading the recall, I am certain that the transmission failed. Car was towed to Ray Skillman cheverolet on south post road in Indianapolis, to which they already ran the vin and agreed to perform the recall. After they realized it was a more serious problem than software, they refused to work on the vehicle. So they worked on it long enough to find out they would have to cover it, then denied that they would do any work. They stated that the title is branded. The BMV has no brands listed on title. The service guy Ryan laughed at me today when I stated that it was dangerous, and told me good luck getting some one to help if I filed a complaint. Regardless they won’t touch the car

While key FOB is operational, next to car door and under moderate temperature conditions, the exterior door handle(s) wont open the car door. The doors freeze, remain latched in place from the outside. The interior door handle on the same door remains operational. This makes it difficult to get into the vehicle to remove people from inside the car should dangerous conditions be present while they are unable to operate the interior handle themselves and/or its difficult to enter the vehicle for safety should dangerous conditions be present outside the vehicle. The doors are jammed, we cant get to you!! There are reports of this happening to all four doors. The dealership says the exterior door handle must be replaced for the door to open from the outside again and it is uncertain if the replacement handle has the defect corrected or not. The latch freeze could occur again, anytime unless the replacement is improved. My vehicle had only 8500 miles on it and the exterior handle failed on the front drivers side. How many times will this condition repeat itself without warning during the lifetime of the car. CadillacForum has discussion on the matter including how some with the problem are disassembling the part and “repairing” the handle defect from the inside. This unnecessary risk could develop into an event that contributed to injuries. A reliable part must be installed asap though many cannot afford the $480 expense to replace it at the dealership. I had a 2000 Cadillac CTS for 20 years and didn’t have a problem with doors locking up from the outside - door handles not responding to efforts to open the door with a correct and operational key fob present. Link to discussion on failing door handles on Cadillacs below [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Cadillac CT5. The contact stated that the check engine warning light was illuminated. The contact had noticed an oil leak and that the battery charge was abnormally low. The contact received an alert from OnStar pertaining to the critically low battery. Additionally, the contact noticed that there was an abnormal squishing sound coming from the dashboard, and the contact believed that the sound was coming from an animal that had intruded into the vehicle. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The vehicle was taken to a tire center where all four TPMS sensors were replaced. The failure mileage was approximately 75,000.

Door handle opening mechanism has not been working correctly for over a year. Multiple attempts to open the door will finally work and the door will open. This is a life safety issue that I have taken up with GM multiple times now and they refused to cover the vehicle. When looking online, dozens of other individuals have also complained about this exact issue.

The contact’s son owns a 2020 Cadillac CT5. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. After a visual inspection, the contact observed that the engine oil was abnormally low. The vehicle was taken to the dealer, who diagnosed a failure with the engine. The contact was informed that the engine needed to be replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 14,466.

The contact owns a 2020 Cadillac CT5. The contact stated that while driving approximately 65 MPH, the vehicle unexpectedly stopped without the brake pedal being depressed. The contact stated that the message "Reduced Power" was displayed on the instrument cluster. The contact was able to continue driving; however, the vehicle failed to accelerate above 10 MPH. The contact was able to drive the vehicle off the highway and then to the residence. The contact was able to restart the vehicle and saw several warning lights illuminated on the instrument cluster. The contact was able to clear the codes, and then the vehicle was driven to a dealer. The dealer checked and saw that the VIN was included in NHTSA Campaign Number: 25V148000 (Power Train) and proceeded to reflash the Power Control Module and install the transmission monitoring software. The vehicle was repaired. The contact informed the dealer that the rear wheels had locked up and which indicated transmission damage. The dealer performed the recall repair and informed the contact that the vehicle was repaired. Additionally, the contact was advised that the engine was leaking engine oil. The vehicle was not diagnosed or repaired for the oil leak failure. The manufacturer was informed of the failure and advised the contact that there was no assistance that could be provided. The failure mileage was approximately 65,000.

For no apparent reason my vehicle is shifting itself into Neutral while driving. The car will suddenly completely slow down to a stop and in order to restart the car, I have to put it in park. It doesn't matter what speed or the road condition, it simply comes to a slow stop because it is no longer in driving mode, it has shifted itself into Neutral. The recall has been serviced and after more than 10 days of being in 2 different Cadillac service centers, I am advised they are unable to simulate the issue, thus the issue is not resolved. It is most definitely a safety issue because the vehicle will just stop moving with the flow of traffic. My concern is being rear-ended or having any type of accident since the car abruptly stops without warning.

CT5 2020 Doors will not unlock.

Major safety Concern Faulty valve body and transmission dealership failed to disclose. Service manager drove vehicle with bent wheels. That is how the bent wheels were discovered. Not from inspection. Wheels evidently bent under dealership possession. 2020 Cadillac CT5 Vehicle financed at 12K Miles with certified pre owned, bumper to bumper, and powertrain warranties in February 2024 showed poor driving, shifting, acceleration and abnormal behaviors such as slow and delayed shifting/acceleration, loud shifting, jerking, and strange noises from the vehicle and low power. There were very suspicious mechanical issues wrong with the car in which the dealership told me that there isn’t anything wrong with the car, with the understanding that if anything was ever wrong with the vehicle it has been fixed. I was ensured and promised that the car does not have anything wrong with it and that it goes through inspection and diagnostics, that the vehicle cannot be sold without being tested, fixed of any problems and brought to standard. I brought this to the attention of the salesman, owner, financial advisor, service advisor, service manager. I requested a full buyback and replacement of my 2020 CT5. My dealership let me know that they still want me to pay for the valve body, battery, ambient air temperature sensor and rear parking brake motor. I had to call Cadillac corporate/General Motors to have the valve body covered & rear bumper covered/replaced. I was brought into the dealership office and was told that the buyback and replacement was denied by General Motors even though my car was showing symptoms of a defective valve body ever since I financed the car. These things were being ignored by the dealership service department. Laggy and rough acceleration as well as shifting. Strange vibrations and noises coming from the car. Slow moving and the shifting was very jerky and abnormal. The shifting was also very loud and took long times to shift 1-2, 2-3, 3-4, 4-5 gears.

Two separate issues: One is being sold a vehicle with a Certified vehicle at 12K miles with a defective, faulty transmission which is a manufacturer defect from General Motors. 10-speed automatic transmission 10L90 model. Misrepresentation of a product. False advertisement of a product. Failure to disclose. Gross negligence. Unethical & Illegal business practices. Dealer & manufacturer fraud. Second issue: When Valve body was replaced on the vehicle, the service manager of the dealership test drove the vehicle with me in the passenger seat on the highway. The vehicle was still not shifting or accelerating correctly even after the valve body replacement. The vehicle began to shake, jerk and rumble on the test drive. The vehicle drove worse. The service manager and I took the vehicle back to the dealership and he found that two of the wheels, on the passenger side, are now bent. That is how the bent wheels were discovered. Not from inspection. Previous multipoint inspection and diagnosis shows the wheels were not bent before I brought the car into the dealership for mechanical work. I can attest to the fact that my wheels were not bent before service and this obvious shaking of the car was not previously existent. The dealership denies liability for this issue and is now refusing to replace the wheels after I have offered to pay. Dealership service manager told me it was safe to drive the vehicle with two bent wheels and I strongly disagree with that statement and so has my insurance company. It is very questionable as to why the service manager would make such a statement. The dealership told me to call other GM dealerships to have the wheels replaced. They refused to do the work as well. I am seeking the proper resolution in this situation.

I've owned 2 ct5 each one had their turbos go out at 55k miles each and valves bodies that need replacing around 70k for each vehicle

The contact owns a 2020 Cadillac CT5. The contact stated that while driving at various speeds, the transmission was slipping while shifting gear. Additionally, the contact stated that there was a delay while shifting gear. The check engine warning light remained illuminated intermittently. The vehicle was taken to a local dealer where the vehicle was diagnosed, and the contact was advised that there was no failure found with the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 12,000.

Regarding NHTSA Campaign ID 25V148, GM recall N242480630. The recall was for a potential transmission control valve issue where some vehicles may be susceptible to excess wear over time, resulting in gradual loss of pressure within the valve that can cause harsh shifting. With the recall we finally knew what was wrong with the vehicle. We have a defective transmission control valve. The transmission was replaced in 2022 and now needs to be replaced again. At the appointment for the recall we expressed that the transmission control valve has already caused damage and it needs to be replaced. We also requested that the damage the defective valve caused, the failing transmission, also needs to be replaced under this recall. We were told to contact Cadillac customer support at 800-333-4223 and filed a case on 5/27/25, case [XXX]. I have yet to receive a call back. I call everyday and leave a message and nobody calls back. The vehicle can not be driven and they will not provide a loaner car. Please hold Cadillac accountable for using defective parts in vehicles and then not providing a remedy to the damage they have caused in a timely manner if at all. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact's sister owns a 2020 Cadillac CT5. The contact stated that while his sister was driving at an undisclosed speed, the rear wheels locked up. The driver was able to pull over to the side of the road. The vehicle was towed to the dealer, where it was diagnosed and determined that the rear wheels had locked up, causing damages to the transmission. The dealer determined that the transmission needed to be replaced but at the vehicle owner's expense. The vehicle was not repaired. The contact became aware that the VIN was included in NHTSA Campaign Number: 25V148000 (Power Train), which the contact related to the failure; however, the contact's sister had not received the recall notification in the mail. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was unknown.

I am receiving notice on the speed screen telling me the door lock need service. I never had a cadillac to tell me something about door lock need service.I have had others 2000 Deville,2017 Cts and now this 2020 Ct5 which i have had so many problem with.But now i am concern about this door problem that is causing alarm system to go off.

Safety Concerns and Defects: I am reporting several safety-related defects in my 2020 Cadillac CT5, which have posed serious risks to me and my family: ⸻ 1. Transmission Pump Failure: •The transmission pump failed, causing loss of power and jerking while driving at highway speeds. This occurred on[XXX] in Georgia with my two small children in the car, putting us at high risk of a crash. •No warning lights appeared, and the failure was diagnosed by the dealer (Hennessey Cadillac). 2. EVAP System Failure (P0451): •A fuel tank pressure sensor malfunctioned, triggering a check engine light shortly after purchase. This affects emissions and presents a fire risk due to potential fuel vapor leaks. •The issue was confirmed by the dealer. 3. Camshaft Solenoid Failure (P0027): •A camshaft solenoid failure was repaired by the dealer, but was not disclosed to me at purchase. •This could have caused engine stalling or hesitation. ⸻ Has the Issue Been Confirmed? •Yes, all issues have been confirmed by the dealership. The vehicle has been returned for repairs, and I can provide diagnostic and repair records. ⸻ Safety Risk and Urgency: The transmission failure almost caused a serious accident on a highway. These defects present imminent safety risks that need investigation. I believe other owners may face similar issues. ⸻ Request for NHTSA Action: Please investigate these defects in the 2020 Cadillac CT5, particularly the transmission pump failure, EVAP system, and engine stalling risks. Thank you for your attention to this matter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Outer door handle/opening electronic mechanism on multiple doors Defect will inhibit persons from providing emergency service in case of accident Drivers door handle assy. was replaced under warranty, rear passenger door now has same problem No warnings are displayed

Service light popped up that says “Service Stabilitrak”

this vehicle has had multiple check engine failures it has been in for service six times in a matter of months. In September I had Service Traction control/StabiliTrack lights come on and the car losses of engine power. I had it serviced again in October for the same issue it was at the dealership for 20 days all they did was clear the code and drove it 38 miles, including the technician driving it home to see if the issue could be duplicated. After the 20th day they advised me to pick up my vehicle and return it when the light were actively on. I expressed to them as well as GM that I felt unsafe driving my vehicle this way as it is a great danger to my safety when the car looses power. I drive up/down a canyon as early as 3am I went from speeds of 80mph drooped down to 20-25mph due to this failure. Today I have another check engine light on the vehicle. I dont feel safe driving this vehicle at all!

In reverse infotainment display instead of showing backup cameras, shows a blue screen with a camera error msg. Has occurred since vehicle was new. As it becomes more frequent, we've taken it to the dealer and they serviced it (keeping the car for 2 weeks each time). Upon return it does it occasionally again. Ongoing for 3+ years with no resolution.

Cameras not displaying. Backup or surround. Instead, we get a blue screen with message "service camera system). This has happened every other day or so since purchased new in March 2020. In May 2021 it would continually occur (never function correctly). Dealer had it for 2 weeks replacing different components. The radio, the video processing unit, a communication harness, 2 cameras. Finally got it back to us where it would once again work 80% of the time. Then in Feb 2023 it would continually occur again (always blue screen). Dealer had it for 2 1/2 weeks. Replaced again multiple components this time at the direction of GM corporate techs and a field engineer. Replaced coaxs, cameras, video processing unit. Finally got it back to us where it would once again work 80% of the time. Now just 5 months later, it's continually occuring again.

I have had many issues with Onstar failing. I bought the 2020 Cadillac CT5 AWD 10/2020. It took Onstar over a month to connect to my car to provide AT&T internet plan (via Onstar). On 4/22/21 I was hit in my driver front & wheel, Onstar failed- never contacted us & the airbags did not deploy. I noticed my Onstar light was red. Onstar was repaired during the body shop repair. Soon after I picked up the car (approximately 1 month) the SRS light came on & Onstar turned red again on 7/31/21. Dropped off the car to be repaired 8/13/21. After repair, SRS light came on again on 8/29/21. Then 10/4/21 the entire CUE system malfunctioned, could not use Carplay, Car Internet would not work, & Navigation would not load. 10/30/21 I cranked my car & left keys in car, the doors locked- which it should not have done. My Onstar app could not unlock the car. I called Onstar to unlock the vehicle & was told they were receiving a "busy signal, spinning sign" when trying to reach my car. My car finally shut off after idling for so long, and it unlocked the doors. I dropped off for service again 11/4/21. GM & Onstar both investigated car for the failures following the accident that occurred 4/22/21-both companies said no issue was found. GM downloaded data from wreck data, I received the report and it was missing data.

There are multiple issues with the electrical / electronics The dealer has never found any data in the systems that shows issues. Driver speedometer screen disappears and will be gone for hours or a trip. Restarting car does not fix. Center console screen that shows camera information disappears and you have no camera. Can be one or multiple trips and restarting car does not fix Dealer says the previous two issues are known but no fix or recall has have been implemented as far as we are are aware. This has been a year approx. Drivers assist package threw the car into a curb creating minor damage to divers side wheels. Cadillac found no issues in recent service. When backing car up it has engaged the parking brake When driving the car it has shifted itself into neutral. The last 3 items the dealer spent weeks going thru the car with Cadillac and found nothing. No parts have ever been replaced in multiple visits The last 3 are huge safety issues

TL* THE CONTACT OWNS A 2020 CADILLAC CT5. THE CONTACT STATED WHILE STARTING THE VEHICLE, THE SERVICE SAFETY RESTRAINT SYSTEM AND AIR BAG WARNING LIGHTS WERE ILLUMINATED. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER - DUBLIN CADILLAC (4200 JOHN MONEGO CT, DUBLIN, CA 94568: (925) 526-4384) AND MATAGA BUICK GMC CADILLAC (3261 AUTO CENTER CIR, STOCKTON, CA 95212, (209) 951-2600) HOWEVER, THE MECHANICS WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 20.

PURCHASED MY 2020 CT5 IN APRIL 2020. SINCE THEN THE VEHICLE HAS BEEN AT THE DEALERSHIP 5 TIMES FOR THE SAME SERVICE DRIVER ASSIST AND FORWARD COLLISION SYSTEM UNAVAILABLE. GM HAS DISPATCHED A SENIOR ADVISOR TO TEST THE VEHICLE AND EVEN LEFT A CODE READER IN THE VEHICLE TO TRACK ITS PERFORMANCE. MESSAGES CAME ON AGAIN. I RECORDED IT AS INSTRUCTED AND THE DEVICE WAS SENT BACK TO THE GM ENGINEERS. IT HAS BEEN OVER A MONTH TODAY 18 SEPTEMBER AND STILL NO UPDATE AS TO WHAT'S WRONG WITH THIS CAR. THEY'VE REPLACED AND REINSTALLED CAMERAS AND DEVICES AND IT STILL DIDN'T FIX THE ISSUE. I GET A CALL TODAY FROM THE DEALERSHIP SAYING THE RECALL CAME OUT. I'M EXTREMELY FRUSTRATED AND I KNOW THEY STILL CAN'T FIX THE ISSUE AFTER MY CAR HAS BEEN THE FIRST CASE AND GUINEA PIG OF RESEARCH. THIS HAS BEEN GOING ON SINCE DATE OF PURCHASE. IT'S INTERMITTENT AND AT ANY TIME OF DAY

WHEN THE VEHICLE IS TRAVELING OVER 50 MPH, AND TAKES SWEEPING TURNS / GRADUAL BENDS ON THE HIGHWAY, IT BECOMES APPARENT THAT TURNING RIGHT IS MUCH HARDER THAN TURNING LEFT. THE STEERING WHEEL IS MUCH STIFFER AND FEELS HEAVIER WHEN MAKING RIGHT TURNS AT SPEED, ALMOST LIKE IT'S PERMANENTLY STUCK IN SPORT MODE WHEN THE WHEEL IS TURNED RIGHT. IT IS CONSTANTLY FIGHTING TO GET BACK TO CENTER WHEN TAKING THOSE RIGHT TURNS AT SPEED. LEFT TURNS ARE FINE. ON TWO OCCASIONS, THE WHEEL SUDDENLY AND VIOLENTLY JERKED LEFT, TRYING TO GET BACK TO CENTER AS I WAS IN THE MIDDLE OF A TURN/GRADUAL BEND ON THE HIGHWAY. I ALMOST CRASHED INTO THE MEDIAN, AND THE OTHER TWO TIMES, ALMOST RAN SIDEWAYS INTO THE CARS TO MY LEFT. THE DEALER "CANNOT DUPLICATE" HAS NOT CHECKED ALIGNMENT, OR TAKEN OTHER STEPS TO INVESTIGATE. I BOUGHT THE CAR NEW, AND HAVE OWNED IT FOR LESS THAN TWO WEEKS.

VEHICLE DISPLAYED SERVICE DRIVER ASSIST WARNING WHICH TRIGGERED CHECK ENGINE LIGHT. SERVICE BULLETIN ISSUED N202294740 TO UPDATE SOFTWARE. SOFTWARE UPDATED AND ON WAY HOME SERVICE DRIVER ASSIST WARNING CAME BACK ON. VEHICLE WAS IN MOTION ON THE HIGHWAY. *TR