2019 Cadillac Ct6 problems, complaints & recalls
Most-reported problem areas: Power Train (14) · Service Brakes (2) · Visibility/Wiper (1)
🧭 Reliability snapshot
Compared against other Cadillac Ct6 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (4)
Power Train:automatic Transmission 2025-03-06 · campaign 25V148000 · 90,081 vehicles
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.
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.
Service Brakes 2019-12-12 · campaign 19V889000 · 463,995 vehicles
Defect: General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 1500, Cadillac CT6, and GMC Sierra 1500 vehicles. Due to an Electronic Brake Control Module (EBCM) software error, the vehicle's Electronic Stability Control (ESC) and Antilock Brake System (ABS) may become disabled. Furthermore, if this specific error occurs, the vehicle's diagnostics will not illuminate the instrument cluster ESC and ABS malfunction warning lights. As such, these vehicles fail to comply with the requireme
Risk: If the driver operates the vehicle unaware that ESC and ABS are not functioning, there is an increased risk of a crash.
Fix: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began February 4, 2020. Owners may contact Chevrolet customer service at 1-800-222-1020, Cadillac customer service at 1-800-333-4223, or GMC customer service at 1-888-988-7267. GM's number for this recall is N192268090.
Exterior Lighting:turn Signal:switch 2019-02-21 · campaign 19V117000 · 5 vehicles
Defect: General Motors LLC (GM) is recalling certain 2019 Cadillac CT6 vehicles. Rotation of the steering wheel will not automatically cancel the turn-signals from flashing. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices and Associated Equipment."
Risk: If the turn-signals do not automatically deactivate, the driver may fail to turn them off manually. An erroneous active turn-signal may mislead pedestrians and other drivers, increasing the risk of a crash.
Fix: GM has notified owners, and dealers will replace the turn-signal switch. The recall began March 11, 2019. Owners may contact Cadillac customer service at 1-800-458-8006. The Cadillac number for this recall is N182207090.
Seat Belts:rear/Other 2018-09-26 · campaign 18V673000 · 15,800 vehicles
Defect: General Motors LLC (GM) is recalling certain 2018-2019 Cadillac CT6, Escalade ESV, Chevrolet Suburban, Volt, and GMC Yukon XL vehicles. Certain second-row or third-row rear seatbelts retractor assemblies may not automatically lock when the seatbelt is fully pulled out of the retractor, possibly preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection.
Risk: If the child seat is not properly secured in the event of a crash, it can increase the risk of injury.
Fix: GM will notify owners, and dealers will inspect the rear seatbelt retractors and replace them if necessary, free of charge. The recall began November 7, 2018. Owners may contact 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 18315.
Service bulletins (876)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-10-26 · GM Update N25-250552 · Over The Air
• improvements to onstar functionality.
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-07-21 · PIT5099J · Service Bulletin/Repair Instructions
pi to help diagnose a/c concern
Unknown Or Other 2026-04-01 · PIT3271Q · Service Bulletin/Repair Instructions
this preliminary information communicates information about how to determine if a wheel and tires size change is available.
Unknown Or Other 2026-03-09 · PIP6104 · Service Bulletin/Repair Instructions
this preliminary information communicates the steps on how to save a gds2 session log and upload to a technical assistance case in cx connect.
Showing the 6 most recent of 876 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-09-15 · Power Train · 47,000 mi“the contact owns a 2019 cadillac ct6. the contact stated that while driving at an undisclosed speed, the transmission unexpectedly shifted hard, and the service warning light was illuminated. the contact stated that while accelerating and decelerating, the vehicle shuddered and hesitated. there was smoke coming from the vehicle. the vehicle was tak…”
2026-07-27 · Power Train“on july 22, 2025, at 20,245 miles, i brought my 2019 cadillac ct6-v to an authorized dealer while still under factory warranty, reporting hard shifting during both acceleration and deceleration — the exact symptom described in gm special coverage bulletin n242480631, which addresses a defective transmission control valve subject to premature wear (…”
2025-10-08 · Power Train · 77,000 mi“the contact owns a 2019 cadillac ct6. the contact stated that while driving approximately 75 mph, the wheels locked up and the vehicle started swaying from side to side, and the vehicle decelerated. the contact was able to coast to the side of the road and had the vehicle towed to an independent mechanic. the vehicle was diagnosed with rear differe…”
2025-07-03 · Power Train · 65,000 mi“the contact owns a 2019 cadillac ct6. the contact received notification of nhtsa campaign number: 25v148000 (power train); however, the part to do the recall repair was not yet available. the contact stated while driving at various speeds, the vehicle shuddered, and the transmission was shifting hard. there was no warning light illuminated. the veh…”
2025-06-24 · Power Train“the contact owns a 2019 cadillac ct6. the contact received notification of nhtsa campaign number: 25v148000 (power train); however, the part to do the recall repair was not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. the dealer was made aware of the issue and confirmed that…”
2025-06-09 · Power Train · 84,000 mi“the contact owns a 2019 cadillac ct6. the contact received notification of nhtsa campaign number: 25v148000 (power train); however, the part to do the recall repair was unavailable. the local dealer was contacted, and it was confirmed that the part was not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of t…”
2025-06-05 · Power Train · 50,000 mi“the contact owns a 2019 cadillac ct6. the contact received notification of nhtsa campaign numbers: 25v148000 (power train); however, the part to do the recall repair was not yet available. the contact stated that upon parking and exiting the vehicle, the vehicle rolled backwards approximately 1 to 2 feet. the driver's door was ajar with the driver’…”
2025-05-28 · Power Train“the contact owns a 2019 cadillac ct6. the contact received notification of nhtsa campaign number: 25v148000 (power train); however, the part to do the recall repair was not yet available. the local dealer was contacted and confirmed that parts were not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of time …”
2025-05-13 · Power Train“the contact owns a 2019 cadillac ct6. the contact stated while driving approximately 50 mph, the vehicle was lagging. there were no warning lights illuminated. the contact received notification of nhtsa campaign number: 25v148000 (power train); however, the part to do the recall repair was not yet available. the local dealer was contacted. the cont…”
2025-05-13 · Power Train“on several separate occasions, my cadillac ct 6 which has been under recall for months by general motors does not have an adequate repair for the repair shops authorized by the manufacturer, namely gm franchised cadillac dealer repair shops and hence i am unable to have my vehicle repaired because the franchised gm dealers inform me that due to the…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.