2021 Cadillac CT4 Problems: 4 Known Issues

2021 Cadillac CT4 Problems: 4 Known Issues | Au7o

NHTSA Recalls5 recalls

POWER TRAIN:AUTOMATIC TRANSMISSION

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.

Campaign #25V14800006/03/2025

EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE

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."

Campaign #22V90300008/12/2022

AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT

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.

Campaign #21V42100010/06/2021

AIR BAGS:SIDE/WINDOW:CURTAIN

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.

Campaign #21V61100005/08/2021

SERVICE BRAKES

General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.

Campaign #20V58800024/09/2020

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

Frequently Asked Questions

What are the most common Cadillac CT4 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Cadillac CT4 has 4 documented issues. The most frequently reported are: Daytime Running Lights May Stay On with Headlights (Recall 22V903), 10-Speed Transmission Damage Can Cause Wheel Lock-Up (Recall 25V148), Airbag Warning Lamp May Not Illuminate Consistently (Recall 21V421). Of these, 4 are rated critical and should be addressed promptly.

Is the Cadillac CT4 reliable?

The 2021 Cadillac CT4 has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 4 issues are rated critical: Daytime Running Lights May Stay On with Headlights (Recall 22V903) and 10-Speed Transmission Damage Can Cause Wheel Lock-Up (Recall 25V148) and Airbag Warning Lamp May Not Illuminate Consistently (Recall 21V421) and Roof-Rail Side-Curtain Airbags May Be Installed Incorrectly (Recall 21V611). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

What is the 2020-2023 Cadillac CT4 Daytime Running Lights May Stay On with Headlights (Recall 22V903)?

On certain 2020-2023 Cadillac CT4 vehicles, the daytime running lights may not deactivate when the headlights are on, creating excess glare and failing FMVSS 108. Severity: high.

What is the 2020-2021 Cadillac CT4 10-Speed Transmission Damage Can Cause Wheel Lock-Up (Recall 25V148)?

Certain 2020-2021 Cadillac CT4 vehicles equipped with a 10-speed transmission can develop internal transmission damage that may cause the wheels to lock while driving. Severity: high.

What is the 2021 Cadillac CT4 Airbag Warning Lamp May Not Illuminate Consistently (Recall 21V421)?

On certain 2021 Cadillac CT4 vehicles, the communications gateway module can process loss of communication with the sensing and diagnostic module incorrectly, causing inconsistent illumination of the airbag malfunction indicator. Severity: high.

What is the 2020-2022 Cadillac CT4 Roof-Rail Side-Curtain Airbags May Be Installed Incorrectly (Recall 21V611)?

On certain 2020-2022 Cadillac CT4 vehicles, the roof-rail side-curtain airbags may not have been installed correctly and may deploy improperly in a crash. Severity: high.

2021 Cadillac CT4 Problems: 4 Known Issues

All 4 Known Issues

2021 Cadillac CT4: Airbag Warning Lamp May Not Illuminate Consistently (Recall 21V421)#

Common Symptoms

How to Fix

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2020-2022 Cadillac CT4: Roof-Rail Side-Curtain Airbags May Be Installed Incorrectly (Recall 21V611)#

Common Symptoms

How to Fix

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2020-2023 Cadillac CT4: Daytime Running Lights May Stay On with Headlights (Recall 22V903)#

Common Symptoms

How to Fix

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2020-2021 Cadillac CT4: 10-Speed Transmission Damage Can Cause Wheel Lock-Up (Recall 25V148)#

Common Symptoms

How to Fix

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Other Cadillac Models

Frequently Asked Questions

What are the most common Cadillac CT4 problems?

Is the Cadillac CT4 reliable?

What is the 2020-2023 Cadillac CT4 Daytime Running Lights May Stay On with Headlights (Recall 22V903)?

What is the 2020-2021 Cadillac CT4 10-Speed Transmission Damage Can Cause Wheel Lock-Up (Recall 25V148)?

What is the 2021 Cadillac CT4 Airbag Warning Lamp May Not Illuminate Consistently (Recall 21V421)?

What is the 2020-2022 Cadillac CT4 Roof-Rail Side-Curtain Airbags May Be Installed Incorrectly (Recall 21V611)?