2021 CADILLAC CT4 — Problems, Recalls & Safety Data
N/A
Safety Rating
8
Owner Complaints
4
Recalls
37
Service Bulletins
0
Investigations
Overview of the 2021 CADILLAC CT4
The 2021 CADILLAC CT4 has received a total of 8 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). There have been 10 recall campaigns affecting this vehicle, covering issues with POWER TRAIN:AUTOMATIC TRANSMISSION, EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE. 37 technical service bulletins have been issued by General Motors, LLC for this model year. The most commonly reported problems involve the Engine (2 complaints), Electrical System (1 complaint), and Forward Collision Avoidance Warnings (1 complaint).
Recalls for the 2021 CADILLAC CT4
NHTSA has recorded 10 recalls for the 2021 CADILLAC CT4, potentially affecting up to 4,430,179 vehicles.
Recall 25V148000 — POWER TRAIN:AUTOMATIC TRANSMISSION
| 90,081 vehicles affected
Defect: 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.
Consequence: Wheel lock-up while driving increases the risk of a crash.
Remedy: 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.
View full details →Recall 22V903000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 740,108 vehicles affected
Defect: 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...
Consequence: 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...
View full details →Recall 22V903000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 740,108 vehicles affected
Defect: 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...
Consequence: 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...
View full details →Recall 22V903000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 740,108 vehicles affected
Defect: 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...
Consequence: 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...
View full details →Recall 22V903000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 740,108 vehicles affected
Defect: 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...
Consequence: 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...
View full details →Recall 22V903000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 740,108 vehicles affected
Defect: 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...
Consequence: 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...
View full details →Recall 21V611000 — AIR BAGS:SIDE/WINDOW:CURTAIN
| 34,157 vehicles affected
Defect: 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.
Consequence: Air bags that do not deploy properly can increase the risk of injury in a crash.
Remedy: 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...
View full details →Recall 21V611000 — AIR BAGS
| 34,157 vehicles affected
Defect: 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.
Consequence: Air bags that do not deploy properly can increase the risk of injury in a crash.
Remedy: 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...
View full details →Recall 21V421000 — AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT
| 285,622 vehicles affected
Defect: 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.
Consequence: The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Remedy: 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...
View full details →Recall 21V421000 — ELECTRICAL SYSTEM:SOFTWARE
| 285,622 vehicles affected
Defect: 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.
Consequence: The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Remedy: 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...
View full details →Owner Complaints for the 2021 CADILLAC CT4
8 complaints have been filed with NHTSA for the 2021 CADILLAC CT4. Below is a breakdown by vehicle component.
| Component | Complaints | Crashes | Fires | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 2 | 0 | 0 | 0 | 0 |
| Electrical System | 1 | 0 | 0 | 0 | 0 |
| Forward Collision Avoidance Warnings | 1 | 0 | 0 | 0 | 0 |
| Power Train | 1 | 0 | 0 | 0 | 0 |
| Steering | 1 | 0 | 0 | 0 | 0 |
| Suspension | 1 | 0 | 0 | 0 | 0 |
| Tiressidewall | 1 | 0 | 0 | 0 | 0 |
Most Recent Complaints
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
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.
Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I don’t think so.
Engine and transmission for the second time in 90 days apart. Supposedly be a new part. I don’t think so.
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.
Safety Rating for the 2021 CADILLAC CT4
NHTSA has not yet tested the 2021 CADILLAC CT4 in its New Car Assessment Program.
Technical Service Bulletins for the 2021 CADILLAC CT4
General Motors, LLC has issued 37 technical service bulletins (TSBs) for the 2021 CADILLAC CT4. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.
PIT5832V — UNKNOWN OR OTHER
This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
PIP5966A — POWER TRAIN
This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
N242450630 — UNKNOWN OR OTHER
Service Update. Certain vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
21-NA-130 — ENGINE
This service bulletin provides a repair procedure to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated, DTC P31E8, P31DB, P31D4 and/or P31E2 Set.
N242450631 — ENGINE
Service Update. Certain vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
N232412712 — ENGINE AND ENGINE COOLING
Service Update - Certain vehicles with a 2.0L engine have an Engine Control Module (ECM) that may not properly diagnose, may not set Diagnostic Trouble Codes (DTCs), or may not illuminate the Malfunction Indicator Light (Check Engine Light) if certain fault conditions of the catalytic converter were to occur. Owners...
N232412712 — ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
Service Update - Certain vehicles with a 2.0L engine have an Engine Control Module (ECM) that may not properly diagnose, may not set Diagnostic Trouble Codes (DTCs), or may not illuminate the Malfunction Indicator Light (Check Engine Light) if certain fault conditions of the catalytic converter were to occur. Owners...
N232412712 — ELECTRICAL SYSTEM
Service Update - Certain vehicles with a 2.0L engine have an Engine Control Module (ECM) that may not properly diagnose, may not set Diagnostic Trouble Codes (DTCs), or may not illuminate the Malfunction Indicator Light (Check Engine Light) if certain fault conditions of the catalytic converter were to occur. Owners...
13-03-10-001K — EQUIPMENT
This service bulletin provides information on summer tire performance and tire cold weather cracking.
23-NA-042 — BACK OVER PREVENTION:SOFTWARE
This service bulletin provides repair information to update radio software to correct customer concerns of Software related issues.
Showing 10 of 37 technical service bulletins.
NHTSA Investigations for the 2021 CADILLAC CT4
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the CADILLAC CT4
- 2020 CADILLAC CT4 — 3 complaints
- 2021 CADILLAC CT4 (current)
- 2022 CADILLAC CT4 — 15 complaints
- 2023 CADILLAC CT4 — 7 complaints
- 2024 CADILLAC CT4 — 9 complaints
- 2025 CADILLAC CT4 — 3 complaints
Other CADILLAC Models
- CADILLAC SRX — 4,131 total complaints
- CADILLAC DEVILLE — 3,659 total complaints
- CADILLAC CTS — 3,088 total complaints
- CADILLAC ESCALADE — 2,120 total complaints
- CADILLAC SEVILLE — 1,049 total complaints
- CADILLAC CATERA — 826 total complaints
- CADILLAC DTS — 725 total complaints
- CADILLAC ESCALADE ESV — 633 total complaints