The Used Car Index

2017 Cadillac CT6 problems

NHTSA lists 17 complaints for the 2017 Cadillac CT6, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.

Data build 2026-10-08.

NHTSA lists this vehicle as CADILLAC CT6.

At a glance

Complaints
17
With crash
0
With fire
0
With injury (complaints)
0
Injuries
0
Deaths
0
Recalls
1
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
181
Investigations
0
Open investigations
0
Manufacturer communications
664

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
POWER TRAIN1058.8%
ELECTRICAL SYSTEM423.5%
SERVICE BRAKES211.8%
VEHICLE SPEED CONTROL211.8%
ENGINE15.9%
FORWARD COLLISION AVOIDANCE15.9%
FUEL/PROPULSION SYSTEM15.9%
STEERING15.9%
STRUCTURE15.9%
SUSPENSION15.9%
Top subsystems
SystemSubsystemComplaints
FORWARD COLLISION AVOIDANCEADAPTIVE CRUISE CONTROL1
STRUCTUREBODY1
VISIBILITYSUN/MOON ROOF ASSEMBLY1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
mechanical failure741.2%0.76
loss of control423.5%0.72
noise or comfort317.6%0.47
electrical electronic15.9%0.82
fluid or fuel leak15.9%0.51
visibility or lighting15.9%0.83
Severities
LabelCountShare of taggedMean confidence
moderate1058.8%0.84
low635.3%0.62
high15.9%0.85

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 17 tagged complaints of 17 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

1 recalls.

21V759000

Date: 2021-09-29. Systems: EXTERIOR LIGHTING.

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."

Consequence: The excessive brightness may affect the vision of other drivers, increasing the risk of a crash.

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.

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

664 manufacturer communications.

Communications by system
SystemCount
EQUIPMENT206
ELECTRICAL SYSTEM113
ENGINE AND ENGINE COOLING102
POWER TRAIN90
UNKNOWN OR OTHER83
ENGINE67
WHEELS37
EQUIPMENT ADAPTIVE/MOBILITY29

11037555

Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

11037550

Date: 2026-09-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11037253

Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11035340

Date: 2026-07-21. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

PI to help diagnose A/C concern

11030974

Date: 2026-04-01. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11030091

Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11030092

Date: 2026-03-09. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11027689

Date: 2026-01-12. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11027601

Date: 2026-01-08. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

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

11025755

Date: 2025-11-20. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customera s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
CT617

Same model, other years

All model years | All Cadillac models

Other Cadillac models, 2017

Sources

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