Model year record

2021 Cadillac CT4 recalls & problems

The 2021 Cadillac CT4 has 4 safety recalls and 7 owner complaints on file with NHTSA. The most-reported problem area is engine (3 complaints).

Recalls4safety recalls

Complaints7filed by owners

Crashes · fires0 · 0reported in complaints

Injuries · deaths0 · 0reported in complaints

Safety recalls

Power trainMar 6, 2025

Automatic transmission

Recall 25V14800090,081 vehicles

Problem: General Motors LLC (GM) is recalling certain 2019-2020 Cadillac CT6, 2020-2021 CT4, CT5, and 2020-2022 Chevrolet Camaro vehicles equipped with a 10-speed transmission. The transmission may become damaged internally and cause the wheels to lock-up.
Risk: Wheel lock-up while driving increases the risk of a crash.
Fix: Dealers will install transmission control module monitoring software, free of charge. Owner notification letters were mailed April 7, 2025. Owners may contact Cadillac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242480630.

Exterior lightingDec 8, 2022

Lighting control module › Software

Recall 22V903000740,108 vehicles

Problem: 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.
Fix: 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.

Air bagsAug 5, 2021

Side/window › Curtain

Recall 21V61100034,157 vehicles

Problem: General Motors, LLC. (GM) is recalling certain 2020-2022 Cadillac CT4 and CT5 vehicles. The roof rail side-curtain air bags may not have been installed correctly, which could result in an improper air bag deployment during a crash.
Risk: Air bags that do not deploy properly can increase the risk of injury in a crash.
Fix: Dealers will inspect both left and right-side roof rail air bags and reinstall the air bags, as necessary, free of charge. Owner notification letters were mailed on August 30, 2021. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212342780.

Components: Air bags › Side/window › Curtain; Air bags

Air bagsJun 10, 2021

Srs malfunction warning lamp/light

Recall 21V421000285,622 vehicles

Problem: General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
Risk: The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Fix: The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N212338110.

Components: Air bags › Srs malfunction warning lamp/light; Electrical system › Software

Recall repairs are free at any authorised dealer. A recall listed here may already have been fixed on a particular car: enter its 17-character VIN at nhtsa.gov/recalls to see open recalls.

Crash test ratings

2021 Cadillac CT4 4 DR AWD

OverallNot Rated

Frontal crash	Not Rated
Side crash	Not Rated
Rollover	Not Rated

Forward collision warning: Standard · Lane departure warning: Optional

2021 Cadillac CT4 4 DR RWD

OverallNot Rated

Frontal crash	Not Rated
Side crash	Not Rated
Rollover	Not Rated

Forward collision warning: Standard · Lane departure warning: Optional

NHTSA 5-Star Safety Ratings (New Car Assessment Program). Ratings are comparable only between vehicles of similar size and weight, and ratings from 2011 on use tougher tests than earlier years. Photos: NHTSA.

Fuel economy

CT4

27mpg combined

City / highway	23 / 34 mpg
Fuel	Premium Gasoline

2 L · 4 cyl · Automatic (S8) · Rear-Wheel Drive · about $3,050/year to fuel

CT4 AWD

26mpg combined

City / highway	23 / 32 mpg
Fuel	Premium Gasoline

2 L · 4 cyl · Automatic (S8) · All-Wheel Drive · about $3,150/year to fuel

CT4

25mpg combined

City / highway	21 / 31 mpg
Fuel	Premium Gasoline

2.7 L · 4 cyl · Automatic (S10) · Rear-Wheel Drive · about $3,300/year to fuel

CT4 AWD

24mpg combined

City / highway	21 / 29 mpg
Fuel	Premium Gasoline

2.7 L · 4 cyl · Automatic (S10) · All-Wheel Drive · about $3,400/year to fuel

CT4 V

23mpg combined

City / highway	20 / 29 mpg
Fuel	Premium Gasoline

2.7 L · 4 cyl · Automatic (S10) · Rear-Wheel Drive · about $3,550/year to fuel

CT4 V AWD

23mpg combined

City / highway	20 / 28 mpg
Fuel	Premium Gasoline

2.7 L · 4 cyl · Automatic (S10) · All-Wheel Drive · about $3,550/year to fuel

EPA estimates from fueleconomy.gov for each engine and transmission sold. Annual cost is the EPA's estimate for 15,000 miles a year at its current fuel and electricity price assumptions. Your results will vary.

What owners report

Problem area	Complaints	Typical mileage*
Engine	3	—
Fuel/propulsion system	2	—
TiresSidewall	1	—
Steering	1	—
Electrical system	1	—
Forward collision avoidanceWarnings	1	—
Suspension	1	—
Power train	1	—
Vehicle speed control	1	—

*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.

Recent owner complaints

Fuel/propulsion system
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…
Jun 17, 2026
Fuel/propulsion system
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?
May 1, 2026
Power train
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 gmâs bulletin is the solution. Now I have to pay…
Jul 31, 2025
Engine
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.
Nov 4, 2024
Engine
Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I donât think so.
Oct 6, 2023
Steering
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.
Jan 22, 2024
Tires › Sidewall
235 40 80 run flat Both front and rear passenger tires no damage to rim less that 10k miles
Jun 12, 2022

Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.

NHTSA defect investigations

Air Bag MalfunctionClosed
On April 9, 2021, the Office of Defects Investigations (ODI) opened PE21-010 to investigate instances of air bag malfunction indicator light (MIL) illumination and potential for frontal air bag non-deployment in several vehicles manufactured by General Motors (GM). The vehicles included model year (MY) 2020 through 2021 CT4 and CT5 passenger cars, Sierra and Silverado trucks (1500/2500/3500 models), XT4 and MY 2021 Escalade, Suburban, Tahoe, Yukon SUVs.Technical Service Bulletin (TSB) 21-NA-005, issued in March 2021, addresses air bag MIL illumination with diagnostic trouble codes (DTCs) B0001-1B or B0012-0D. It cites rust particles in the connection terminal interface of the driver air bag inflator housing as the cause of the air bag MIL illumination. Illumination of the air bag MIL under these circumstances may result in a non-deployment of the frontal driver air bag during a frontal…
PE21010 · opened Apr 9, 2021 · closed Aug 24, 2023