The problem first arose in June 2023 with a different car, 2022 CT4V VIN [XXX] . I was driving and suddenly, all the dashboard lights went on and the brakes stopped working. There was no pressure on the pedal. I was able to roll to a stop without incident. I turned the car off and back on again and the brakes worked but the check engine light was still on. I was able to limp the mile back to my house. After almost 6 weeks at the dealer, I was told they replaced a brake module and the car was fine. On [XXX], it happened again. It was towed to the dealer and I refused to drive it again. The car had about 2400 miles on it. They took it back, although claiming nothing was wrong, and I bought the CT4V Blackwing 2023. On [XXX], it happened in the new car (500 miles on it). The dashboard lit up, the brakes wouldn't work, although this time instead of no pressure on the pedal, it was hard as a rock. After turning it on and off again, the brakes worked but the speed was restricted and other things in the car did not seem to be working correctly. The check engine light was also on. The dealership towed it. They told me they could not recreate the problem. Weeks later, I was told that an engineer from GM was looking at it. I received a call from some customer support department person who eventually told me that there was nothing wrong with the car, that the brake failure was a result of the Allstate Milewise device that was plugged in and they would not do anything for me. My husband has a Milewise in his Chevy truck with no issues. I found a forum online discussing this problem which has apparently happened to numerous people in CT4V and Blackwings. I also spoke to Allstate which does not have any reported problems with the device. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The worst 2023 Cadillac CT4 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Acceleration1
- Brakes1
- Electrical1
- Engine1
- Fuel system1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Acceleration1
- Brakes1
- Electrical1
- Engine1
- Fuel system1
- Steering1
- Transmission1
Recalls 1
Exterior lighting: lighting control module: software
- What is wrong
- General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
- Risk
- DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.
- Remedy
- The body control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed January 23, 2023. Owners may contact GMC customer service at 1‑888‑988‑7267, Chevrolet customer service at 1‑800‑222‑1020, or Cadillac customer service at 1‑800‑458‑8006. GM's number for this recall is N222386380. This recall expands previous recall number 22V‑827.
Recall number 22V903000 · Recall details
Technical service bulletins for the 2023 Cadillac CT4 557
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- Unknown or other
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- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- This PI communicates the proper part numbers for transmission connectors and internal harness to prevent...
- This PI advises of a procedure for a Service Door Latch System message with No Related DTCs
What 2023 Cadillac CT4 owners say
Most recent owner complaints, unedited.
The vehicle shut off while driving on the feeder of the highway. Vehicle was no longer responsive and had to be towed to Central Cadillac of Houston; where later it was determined that the vehicle needed a new engine. The Vehicle is a 2023 with less than 5,000 miles on it. Currently General Motors/Cadillac is not acknowledging that a buy back is needed for the vehicle, even though it meets requirements for the Texas Lemon Law.
Early morning starts, backing out of my garages which has a slight angle to is and then putting the car in drive and accelerating at a low speed when car reaches 10 miles per hour the engine races and the transmission hesitates. This only happens on the at the start of the day. Doesn't happen again until the next day. It does this 90% of the time. Additionally, throughout the day if you let up on the gas and coast then accelerate it take a few second for the transmission to reengage.
Compare the 2023 Cadillac CT4
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Questions about the 2023 Cadillac CT4
Is the 2023 Cadillac CT4 reliable?
Owners have filed 3 complaints about the 2023 Cadillac CT4, fewer than a typical CT4 model year.
What is the most common problem with the 2023 Cadillac CT4?
Acceleration and speed control, with 1 complaint. Next is brakes (1).
How many recalls does the 2023 Cadillac CT4 have?
1 recall, covering exterior lighting.
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