Every 2021 Cadillac CT4 recall
Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.
Power Train · NHTSA 25V148000
Jun 3, 2025Power Train:Automatic Transmission
- 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.
Full recall details for 25V148000 →Exterior Lighting · NHTSA 22V903000
Aug 12, 2022Exterior Lighting:Lighting Control Module:SoftwareOver-the-air fix
- 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.
Full recall details for 22V903000 →Air Bags · NHTSA 21V421000
Oct 6, 2021Air Bags:Srs Malfunction Warning Lamp/LightOver-the-air fix
- 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.
Full recall details for 21V421000 →Air Bags · NHTSA 21V611000
May 8, 2021Air Bags:Side/Window:Curtain
- 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.
Full recall details for 21V611000 →
2021 Cadillac CT4 complaints and service bulletins
Owners filed 7 complaints with NHTSA about the 2021 Cadillac CT4. Cadillac has issued at least 814 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.
Most-reported components
- Engine3
- Fuel/Propulsion System2
- Electrical System1
- Forward Collision Avoidance1
- Power Train1
- Steering1
Service bulletins by component
- Equipment (201)
- Electrical System (192)
- Unknown Or Other (157)
- Power Train (109)
- Engine and Engine Cooling (107)
- Engine (64)
Read Cadillac CT4 owner complaints and bulletins, every year
NHTSA defect investigations covering the 2021 Cadillac CT4
NHTSA’s Office of Defects Investigation lists this model year in one investigation. An investigation is not a recall; it is how NHTSA decides whether one is needed.
What people reported
Owners have filed 7 complaints with NHTSA about the 2021 Cadillac CT4. A few in their own words, shortened. Complaints are unverified and are not proof of a defect or of any recall.
“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.”
2021 CADILLAC CT4Jun 29, 2026 · CA
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11747192
“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.”
2021 CADILLAC CT4May 31, 2026 · FL
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11741180
“There is a known issue with hesitation and hard shifting on my vehicle.”
2021 CADILLAC CT4Aug 27, 2025
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11683316
“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.”
2021 CADILLAC CT4Apr 16, 2025
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11655109
“Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I don't think so.”
2021 CADILLAC CT4Apr 30, 2024
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11586038
Check your CT4 by VIN
Not every 2021 Cadillac CT4 is in every recall. Enter your 17-character VIN to see the recalls on record for your exact vehicle, then confirm which are still open at NHTSA.gov or with any Cadillac dealer.
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