2020 Cadillac CT6 Other or unknown Problems
- Complaints
- 1about this part
- Share
- 9%of 11 total for the year
- Median mileage
- 8,900miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the other or unknown of the 2020 Cadillac CT6, 9% of the 11 complaints for this model year. Where a mileage was given, the median is 8,900 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The super cruise self driving feature doesn't work and error messages continuously flash on dashboard. It has been at the dealer since 12/16 (>9 weeks) without any resolution. Calls, emails, posts to Cadillac and general motors go unanswered. Dealer tells me Cadillac engineers from corporate come and go with no solution. I've made 2 payments to date without my car. I notified GM financial I will no longer make payments on a car I do not have. Also no response.”
NHTSA complaint #11396890, filed 2021-02, 8,900 milesRelated service bulletins
- 11037555Sep 26, 2026This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026PI to help diagnose A/C concern
- 11030974Apr 1, 2026This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11029950Mar 2, 2026This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- 11027697Jan 16, 2026This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
- 11027701Jan 14, 2026This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
- 11027601Jan 8, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Other or unknown: other model years
Other parts of the 2020 Cadillac CT6
6 complaintsBrakes
3 complaintsForward collision avoidance
2 complaintsBody and structure
1 complaintsSuspension
1 complaintsWheels
1 complaints
← All problems reported for the 2020 Cadillac CT6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology