RoadVitals

2016 Cadillac CT6

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
11
Latest Oct 20, 2025
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
3
Latest Sep 29, 2021
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
3
2 injuries, 1 deaths reported

Overview

Our database contains 11 NHTSA owner-reported complaints for the 2016 Cadillac CT6, most frequently naming the powertrain (other), airbags and engine categories. 3 safety recalls have been issued covering this model year; and 1,367 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Powertrain (other)646.2%
  • Airbags215.4%
  • Engine215.4%
  • Fuel system17.7%
  • Other / unspecified17.7%
  • Suspension17.7%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

3 campaigns cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
21V759000

EXTERIOR LIGHTING; EXTERIOR LIGHTING:HEADLIGHTS

Sep 29, 2021
181 units potentially affected
The 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."
The risk: The excessive brightness may affect the vision of other drivers, increasing the risk of a crash.
The remedy: 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.
General Motors, LLCManufacturer number N162016079View on NHTSA.gov
18V437000

CHILD SEAT:LATCH STRAP; SEATS:MID/REAR ASSEMBLY

Jun 28, 2018
22,043 units potentially affected
The 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."
The risk: If the child seat cannot be attached correctly to the anchorage bar, there is an increased the risk of injury.
The remedy: 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.
General Motors LLCManufacturer number 18228View on NHTSA.gov
16V687000

SEAT BELTS:FRONT:WEBBING

Sep 23, 2016
131 units potentially affected
The 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.
The 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.
The remedy: 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.
General Motors LLCManufacturer number 16035View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 11
Airbags
Filed Oct 20, 2025
Crash reported1 injury reported1 death reported

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 succumbed to his injuries. A police report was taken. The vehicle was towed to the tow lot, where it was deemed a total loss. The contact stated that there were no additional injuries. The manufacturer was not yet notified of the incident. The failure mileage was unknown.

NHTSA ID
11694492
Incident
Sep 27, 2025
Engine
Filed Aug 8, 2025

The turbo boost failed cylinder 2 ( after being repaired ) continues to show issues

NHTSA ID
11679344
Incident
Mar 2, 2025
Powertrain (other)
Filed Mar 31, 2025

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 inconsistent—it disappears for a few days after rain or washing my driveway but then reappears under similar conditions. 3.Delayed Shifting: When accelerating from a stoplight, there is a delay before the transmission engages, causing hesitation before the car moves forward. 4.Automatic Start-Stop Issue: The vehicle has an automatic engine shut-off feature that activates when stopping at a light. When I take my foot off the brake, the engine restarts abruptly, causing a harsh jerk that shakes the entire car. This makes it feel like the transmission or another component is not engaging smoothly. 5.Check Engine Light Issue: The check engine light came on for a day, but before I could take it to a repair facility, it turned off on its own. Because of this, I was unable to retrieve any diagnostic codes. I am concerned these issues indicate a faulty transmission system or related defect that may worsen over time. I request an investigation into whether this is a common defect in the 2016 Cadillac CT6 and if any recalls or manufacturer repairs are available.

NHTSA ID
11651834
Incident
Feb 17, 2025
Powertrain (other)
Filed Feb 2, 2025

The car keep losing power pressure when driving it's jerk when put into gear

NHTSA ID
11640230
Incident
Jan 26, 2025
Powertrain (other)
Filed Apr 15, 2024

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 vehicle was constantly shaking. The vehicle was taken to a dealer where the failure was first not able to be duplicated. The vehicle was taken to another dealer for the third time where it was diagnosed that an unknown harness needed to be replaced. The vehicle was repaired, but the failure recurred a month later. The manufacturer was notified of the failure and a complaint was filed. The failure mileage was approximately 19,000.

NHTSA ID
11583068
Incident
Aug 20, 2020
Mileage
19,000 mi
Fuel systemPowertrain (other)
Filed Aug 4, 2023

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 months. I retrieve my vehicle in February 2023, with a brand-new Transfer Case with a price tag of $2,200.00. On Thursday, August 3, 2023, I managed to drive the vehicle back to Waldorf Cadillac & Chevrolet to have to vehicle repaired. The vehicle is doing the same thing it was doing , when the vehicle was previously in the Repair Shop. The Technician informed me that Cadillac recommend the fluid in the transmission be changed to a high-performance fluid. This recommendation was issued to the dealers several months ago. Now the dealer is charging me approximately $1,000.00 for Transmission Fluid. I asked the Technician why the problem wasn't corrected while previously in the shop. No reply. If Cadillac knows this is the problem, why is the customer being charged for this service, if this will correct the problem. There is 64,000 miles on my vehicle.

NHTSA ID
11536546
Incident
Nov 1, 2022
Powertrain (other)
Filed Mar 25, 2023

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

NHTSA ID
11513710
Incident
Aug 2, 2020
Airbags
Filed Apr 15, 2021
Crash reported1 injury reported

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.

NHTSA ID
11408187
Incident
Apr 11, 2021
Mileage
58,000 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

PIT5099J

PI to help diagnose A/C concern

PIT3271Q

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

PIP6104

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

PIP4902V

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

PIP5700G

This PI communicates the proper part numbers for transmission connectors and internal harness to prevent confusion when ordering

PIP4902U

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Cadillac CT6 by model year
YearComplaintsRecallsInvestigationsIssue Index
2021000—
2020112050.4
2019164051.5
2018900—
2017171043.9
2016Viewing113063.0
2015000—
2014000—
2013000—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.