2017 Cadillac Ct6 Plug-In Hybrid problems, complaints & recalls
Most-reported problem areas: Power Train (7) · Visibility/Wiper (1) · Electrical System (1)
Safety recalls (1)
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.
Service bulletins (663)
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 2026-09-04 · 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.
Unknown Or Other 2026-03-09 · PIP4902V · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Showing the 6 most recent of 663 bulletins. Search all of them free at nhtsa.gov.
What owners report
2020-03-04 · Power Train · 9,759 mi“on more than three occasions, this vehicle has lost substantial or all propulsion due to engineering design defects with the gas/hybrid electric transmission system. all but one of these situations occurred on a high speed freeway causing potentially life threatening conditions when the vehicle substantially slowed or stopped. this is a known iss…”
2019-10-21 · Power Train · 1,700 mi“tl* the contact owns a 2017 cadillac ct6. when the vehicle was started, it lurched forward without warning. the failure occurred intermittently. the vehicle was taken to gold coast cadillac (732-709-2168, located at 2123 state route 35, oakhurst, nj 07755), but the cause of the failure could not be determined. the manufacturer was made aware of the…”
2019-09-14 · Power Train · 24,192 mi“i purchased the used 2017 cadillac ct6 in march 2019 with 24,192 miles. it was a certified pre -owned car by the dealer. additionally i purchased a cpo protection plus protection plan with the car. i am experiencing problems with the transmission. during acceleration and decelerating the car feels a hesitation followed by a significant shake, s…”
2019-08-26 · Power Train · 83,000 mi“hard shifts in low speeds, intense vibration , shudder throughout driving speed. cadillac dealer said it is torgue converter issue, car transmission needs to be fluid exchanged for $800.…”
2018-12-03 · Visibility/Wiper“tl* the contact owns a 2017 cadillac ct6. due to the changes in the weather, the rear window had a marbleized haze cover, which made visibility out of the window extremely difficult. the vehicle was taken to schooley cadillac (2101 45th st, west palm beach, fl), but the cause of the failure could not be determined. the manufacturer was notified of …”
2018-06-27 · Power Train · 51,000 mi“transmission has a signification clunk/hesitation/delay shifting up from 1st-2nd gear and down from 2nd-1st gear. in the upshift, the car violently lunges forward once the acceleration rev from the push of the pedal catches up with the gear shifting, no matter how delicately you might push the pedal. feels like the vehicle has been hit from behin…”
2018-01-18 · Power Train · 7,964 mi“i have had issues with my vehicle that involves hard shifting at times and also, the vehicle sometimes will lurch quite abruptly. it actually feels as if the vehicle was rear ended. i have taken the vehicle to the dealership on 4 occasions and they were only able to "replicate" the problem one time. this hard shift/lurching occurs usually when a…”
2017-10-03 · Power Train · 2,500 mi“vehicle's transmission lurches and slips out of gear in coast conditions; during turns and in intersections.…”
2017-08-29 · Electrical System · 2,000 mi“lane departure warning alert does not work…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.