Jun 23, 2026Brakes
The electronic brake control module, break retainer, brake master cylinder and brake valve all failed. I was driving to lunch and coming down a hill when multiple warning lights turned on as I pressed the brakes. I had almost no braking power as I approached a stop sign that lets you enter a highway almost causing me to drive through the stop sign and into cross traffic. I had enough bearings to down shift it and slow it down enough to stop. If I have went through the stop sign, it could have been a fatal accident. The vehicle is at a GM dealership currently with all active codes and faulty equipment. I contacted GM and tried to get some help with this issue and they refuse to help since it is not on the recall list. There is a recall on these exact same parts on the exact same vehicle, GM said its VIN specific. The problem is still current. This vehicle is a major safety risk that obviously should have been included in the recall. There was no warning or no symptoms of this issue until the failure in the moment.
NHTSA ODI 11745985
Jun 8, 2026Transmission & drivetrainEngineFuel system
The vehicle shudders and loses power when accelerating fast. My wife almost got hit when she pulled out in traffic the car stalled out. It is due to the cylinder deactivation (afm).
NHTSA ODI 11742821
May 31, 2025
Right rear brake light is out. There is a lot of moisture in the tail light causing the lights to corrode and go out
NHTSA ODI 11664086
Jun 5, 2024Engine
The contact owns a 2020 Cadillac CT4. The contact stated while driving 70 MPH, on several occasions, the vehicle failed to accelerate, hesitated, and then stalled. The vehicle was towed on three occasions to the local dealer, who was unable to determine the cause of the failure. There were no DTC codes retrieved. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 45,000.
NHTSA ODI 11592549
Jul 20, 2021Airbags
The contact owns a 2014 Cadillac CT4. The contact stated that the "Service Safety Restraint System" message was displayed on the instrument panel while driving. The vehicle was taken to the dealer who diagnosed that the air bags needed to be replaced. The vehicle was not repaired due to the parts not yet being available. The manufacturer was not made aware of the failure. The approximate failure mileage was 3,000.
NHTSA ODI 11425658