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.
2018 Cadillac CT6 problems
NHTSA lists 9 complaints for the 2018 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 2026-10-09.
NHTSA lists this vehicle as CADILLAC CT6.
At a glance
- Complaints
- 9
- With crash
- 0
- With fire
- 0
- With injury (complaints)
- 0
- Injuries
- 0
- Deaths
- 0
- Recalls
- 0
- Do not drive recalls
- 0
- Park outside recalls
- 0
- Recall potential units (maximum)
- Unavailable
- Investigations
- 0
- Open investigations
- 0
- Manufacturer communications
- 695
Complaints per 100k sold unavailable. No sales source is available for this record.
Where the complaints are
| System | Complaints | Share of this vehicle's complaints |
|---|---|---|
| ENGINE | 3 | 33.3% |
| POWER TRAIN | 3 | 33.3% |
| FUEL/PROPULSION SYSTEM | 2 | 22.2% |
| STEERING | 2 | 22.2% |
| EXTERIOR LIGHTING | 1 | 11.1% |
| FORWARD COLLISION AVOIDANCE | 1 | 11.1% |
| LANE DEPARTURE | 1 | 11.1% |
| SERVICE BRAKES | 1 | 11.1% |
| STRUCTURE | 1 | 11.1% |
| SUSPENSION | 1 | 11.1% |
| System | Subsystem | Complaints |
|---|---|---|
| FORWARD COLLISION AVOIDANCE | ADAPTIVE CRUISE CONTROL | 1 |
| LANE DEPARTURE | ASSIST | 1 |
| STRUCTURE | BODY | 1 |
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.
| Label | Count | Share of tagged | Mean confidence |
|---|---|---|---|
| mechanical failure | 5 | 55.6% | 0.84 |
| loss of control | 2 | 22.2% | 0.87 |
| structural or corrosion | 1 | 11.1% | 0.99 |
| visibility or lighting | 1 | 11.1% | 1.00 |
| Label | Count | Share of tagged | Mean confidence |
|---|---|---|---|
| low | 4 | 44.4% | 0.78 |
| moderate | 4 | 44.4% | 0.81 |
| high | 1 | 11.1% | 0.49 |
Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 9 tagged complaints of 9 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.
0 recalls.
Investigations
0 investigations; 0 open.
Manufacturer communications
695 manufacturer communications.
| System | Count |
|---|---|
| EQUIPMENT | 207 |
| ELECTRICAL SYSTEM | 129 |
| ENGINE AND ENGINE COOLING | 104 |
| POWER TRAIN | 91 |
| UNKNOWN OR OTHER | 91 |
| ENGINE | 67 |
| WHEELS | 37 |
| EQUIPMENT ADAPTIVE/MOBILITY | 30 |
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
| NHTSA model label | Complaints |
|---|---|
| CT6 | 9 |
Same model, other years
Other Cadillac models, 2018
- XT5: 66 complaints
- ATS: 21 complaints
- Escalade: 21 complaints
- Escalade ESV: 15 complaints
- CTS: 8 complaints
- XTS: 7 complaints
- CT6 Plug-IN Hybrid: 3 complaints
- ATS-V: 0 complaints
Sources
Get this record as JSON
The free rate-limited demo needs no key.
curl "https://api.theusedcarindex.com/v1/demo/vehicle_risk?make=Cadillac&model=CT6&year=2018"Paid endpoint: https://api.theusedcarindex.com/v1/vehicle_risk. MCP endpoint: https://api.theusedcarindex.com/mcp.