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Cadillac CT4 2021 — Reported problems

Reported by owners to the source below. It is not a verdict on this car: it is what people wrote. 🇺🇸 Local data

7 owners reported problems with the 2021 Cadillac CT4 to NHTSA, most often about engine.

All reports

7
VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM 2026-06-29 · NHTSA 11747192

While driving at highway speeds on the freeway in my 2021 Cadillac CT4-V, the vehicle experienced a sudden, catastrophic loss of propulsion. Without warning, the transmission dropped out of gear as if it were in neutral. I completely lost the ability to accelerate, creating an immediate, life-threatening hazard as I was left stranded and blocking high-speed freeway traffic. Only after the mechanical failure occurred did the check engine light illuminate. The vehicle was towed to Cadillac Dealership. The service department confirmed that the vehicle suffered from the known defective transmission control valve covered under GM Special Coverage Bulletin N242480631 and tied to NHTSA Campaign 25V148. The dealership ordered the replacement valve body but aborted the repair after confirming that the control valve's failure caused massive internal fluid leaks and total mechanical destruction of the transmission assembly. The manufacturer is currently denying coverage for the complete transmission replacement, despite the fact that the total failure was consequential damage directly caused by the federally recalled, component defect.

FUEL/PROPULSION SYSTEM 2026-05-31 · NHTSA 11741180

Check engine light for P1467 on a 2021 CT4 V. This is for a "purge pump underspeed" issue. The issue is known on CT4 Cadillacs and has an active recall out: N242441120 Evaporative Emissions Purge Pump. This recall is only for the 2.0, LSY engines, but the much more uncommon 2.7, L3B engine in my car uses the same part # for the purge pump. It feels as though they are intentionally ignoring an equal emissions issue, but just on a smaller scale with the limited number of these engines they sold. What actions can I take?

POWER TRAIN 2025-08-27 · NHTSA 11683316

There is a known issue with hesitation and hard shifting on my vehicle. According to the gm bulletin that was released I believe in may of 25 my year, make and model has a known issue where the transmission control valve may stick or wear causing jerking and shifting issues and could cause a possible crash. According to the bulletin by gm the fix is to replace the valve cover on the transmission. My vehicle is currently at the Cadillac repair center for this shifting issue and it has been diagnosed to need a valve cover replacement to solve the problem. My point is I have the exact problem listed in the recall and the exact repair listed on gm’s bulletin is the solution. Now I have to pay for the repair because my vin is not specifically listed yet but my year, make and model and problem and the solution is all listed . I know I’m apart of this recall please help me

ENGINE 2025-04-16 · NHTSA 11655109

valve body failed and was supposedly repaired. I had the car 1 day and valve body failed again. My car has been in the shop since November 4, 2024 with no estimated time of repair because no parts are available. I was told they would replace the transmission. That has not happened yet. No parts available. My car has been disable for 6 months.

SUSPENSION,ENGINE 2024-04-30 · NHTSA 11586038

Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I don’t think so.

STEERING,ELECTRICAL SYSTEM,FORWARD COLLISION AVOIDANCE 2024-01-24 · NHTSA 11567425

While driving the power steering was lost. The the auto hold function lit up. The collision warning light lit up. The stabilitrak system lit up. The air bag safety system lit up. Steering became very hard and made for y safe driving. Later that day 01-22-24, all warning light went out and power steering was normal.

TIRES 2022-06-23 · NHTSA 11470678

235 40 80 run flat Both front and rear passenger tires no damage to rim less that 10k miles

Specifications, safety and listings for this car

Questions

What do owners report most on the 2021 Cadillac CT4?
Problems with engine: 3 reports of 7 on record at NHTSA.
How many owner reports mention a crash or a fire?
Out of 7 reports: a crash is mentioned in 0 and a fire in 0. These are what owners wrote, not confirmed findings.