2018 Cadillac Ct6 Plug-In Hybrid problems, complaints & recalls
Most-reported problem areas: Steering (1) · Power Train (1) · Electrical System (1)
Safety recalls (2)
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.
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 (413)
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 413 bulletins. Search all of them free at nhtsa.gov.
What owners report
2020-10-16 · Steering · 27,000 mi“my engine light is on and this is the 15th time i have bought my car in for various engine problems like engine power reduced and other problems with this car. the car would just stop in the middle of the ride or jerking as i drive it. i have been on the highway when it has stalled before as i drive. i have had these problems since i purchased the …”
2020-07-24 · Power Train · 30,500 mi“loss of all vehicle power while traveling on the freeway at highway speeds. vehicle check engine, power limited, and electric motor overheat warning lights come on. the combustion engine will not start, and battery power availability goes to zero. this is very dangerous to public health and safety due to instantaneous loss of combustion engine and …”
2018-05-30 · Electrical System · 250 mi“right after purchase, the nav screen kept flickering, causing a distracted driver situation and a hazard. the dealer did everything they could per gm guidelines, but even after the 1st service visit, the car would shut down in drive mode, as the vehicle was in motion. then the vehicle would not shut off using the power off button. gm is telling the…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.