2016 Cadillac Ct6 problems, complaints & recalls
Most-reported problem areas: Power Train (5) · Engine (2) · Air Bags (2)
🧭 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 (3)
Exterior Lighting:headlights 2021-09-29 · campaign 21V759000 · 181 vehicles
Defect: General Motors, LLC (GM) is recalling certain 2016-2017 Cadillac CT6 vehicles. The Park/Position lights may be excessively bright. 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: The excessive brightness may affect the vision of other drivers, increasing the risk of a crash.
Fix: Dealers will install right and left side in-line headlight jumper harnesses, free of charge. Owner notification letters were mailed November 3, 2021. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is N162016079.
Child Seat:latch Strap 2018-06-28 · campaign 18V437000 · 22,043 vehicles
Defect: General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CT6 vehicles. The inboard child seat anchorage bars may have had excess structural adhesive applied during assembly, which can interfere with the installation of a child seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 225, "Child Restraint Anchorage Systems."
Risk: If the child seat cannot be attached correctly to the anchorage bar, there is an increased the risk of injury.
Fix: GM will notify owners, and dealers will inspect, remove any excess adhesive, and apply anti-corrosion primer to the inboard child seat anchorage bars, free of charge. The recall began August 3, 2018. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 18228.
Seat Belts:front:webbing 2016-09-23 · campaign 16V687000 · 131 vehicles
Defect: General Motors LLC (GM) is recalling certain model year 2016 Cadillac CT6 vehicles manufactured July 21, 2016, to July 22, 2016. The bolt that connects the front passenger seat belt webbing to the seat's anchor plate may be missing. Without the bolt, the seat belt webbing may detach from the seat anchor.
Risk: If the seat belt webbing detaches from the seat anchor, the seat belt may not properly restrain the front seat passenger in the event of a crash, increasing the risk of injury.
Fix: GM will notify owners, and dealers will replace the existing front passenger seat belt webbing anchor bolt, or install a bolt if it is missing, free of charge. The recall began on September 24, 2016. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 16035. Note: Owners are advised not to allow an occupant to sit in the front passenger seat until the recall remedy has been performed.
Service bulletins (1,371)
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 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-21 · PIP5700H · Service Bulletin/Repair Instructions
this pi communicates the proper part numbers for transmission connectors and internal harness to prevent confusion when ordering
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 1,371 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-10-20 · Air Bags · 💥 crash“the contact's husband owned a 2016 cadillac ct6. the contact stated that while her husband was making a left turn, the vehicle was struck on the front passenger side by another vehicle. the contact stated that her husbands air bag did not deploy. medical attention was needed, and the contact's husband was transported to the hospital, where he succu…”
2025-08-08 · Engine“the turbo boost failed cylinder 2 ( after being repaired ) continues to show issues …”
2025-03-31 · Power Train“i am experiencing recurring transmission and drivability issues with my 2016 cadillac ct6. 1.rough shifting: when shifting from park to reverse, the transmission shifts roughly, causing a noticeable jolt throughout the vehicle. 2.fluid leakage: i have observed fluid leaking from underneath the car when parked in my driveway. however, the leak is in…”
2025-02-02 · Power Train“the car keep losing power pressure when driving it's jerk when put into gear …”
2024-04-15 · Power Train · 19,000 mi“the contact owns a 2016 cadillac ct6. the contact stated that while in reverse, the vehicle accelerated inadvertently. the brake pedal was depressed to stop the vehicle. additionally, the contact stated while driving between 30-45 mph on several occasions, the gears shifted, and the vehicle jolted forward. additionally, that contact stated that the…”
2023-08-04 · Unknown Or Other“approximately in november 2022, i was driving my 2016 cadillac ct6. while operating at a normal speed of 40 mph, while in traffic the vehicle began to hesitate and a loss of power. the vehicle was towed to waldorf cadillac & chevrolet. the vehicle was diagnosed with a transfer case issue. the vehicle in the repair shop for approximately 4 month…”
2023-03-25 · Power Train“vehicle has sudden violent forward jerking motion at stops, delayed performance when accelerating ,hard shifting when changing gears, clunking noise when shifting into low gear…”
2021-04-15 · Air Bags · 58,000 mi · 💥 crash“vehicle involved in a severe accident, airbags did not deploy. the vehicle was in motion on a hwy. vehicle was struck by oncoming traffic and then launched into a ditch. none of the airbags deployed during the incident.…”
2020-08-25 · Engine · 16,500 mi“when i am turning under 25 mph, i accelerate and there is a delay and a drag before the vehicle starts to accelerate. if i do not allow room, i could get hit because there is a delay. very dangerous. almost feels like a vacuum issue.…”
2018-11-01 · Power Train · 750 mi“car will not respond for at least 2 seconds during a slow, rolling stop, when trying to accelerate again. unable to perform evasive manuever, if needed, secondary to the delay to accelerator input. harsh 2-1 downshifts also at slow speeds and can even feel as though you were struck from behind. highway driving is excellent; city driving challenging…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.