2021 Cadillac CT5 Other or unknown Problems
- Complaints
- 4about this part
- Share
- 13%of 30 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the other or unknown of the 2021 Cadillac CT5, 13% of the 30 complaints for this model year.
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.
“I have experienced a serious and recurring safety issue with the door handles on my Cadillac CT5 vehicles. The exterior door handles have stopped working, preventing the doors from being opened normally. On one occasion, I was trying to get my child out of the back seat when the rear door handle failed and would not open. Because the child safety lock was engaged, my child was also unable to open the door from the inside. I had to climb through the vehicle and use another door to get my child out. …”
NHTSA complaint #11765920, filed 2026-09“While driving on a very busy highway going downhill when suddenly the vehicle started feeling abnormal like it was going to turn off automatically, heard an abnormal grinding noise coming from the engine the vehicle dropped speed drastically and the check engine light turned on , luckily we were on a part of the road where I merged quickly to the side of the road followed by a sudden engine shut down, the safety of myself and 3 other passengers was very compromised due to nearly being hit by other vehicles coming at a high speed on a main highway when my vehicle suddenly slowed down coming…”
NHTSA complaint #11717706, filed 2026-02“The Cadillac CT5 door handles are operated via a button instead of a typical pull style handle. The buttons fail regularly meaning you cannot open the specific door(s) where the button has failed. With small children in the car when this fails it poses a severe health and safety risk. There needs to be a recall issued for this well known and documented problem.”
NHTSA complaint #11766863, filed 2026-09“Driver Side door handle stops working. Because the door handle operates with a sensor and not a standard pull door handle something is being affected and it will not open door. Causing safety issue and not being able to enter car normally.”
NHTSA complaint #11632837, filed 2024-12Related service bulletins
- 11037555Sep 26, 2026This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037319Sep 8, 2026This PI advises of a procedure for a Service Door Latch System message with No Related DTCs
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11036392Aug 20, 2026This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- 11035340Jul 21, 2026PI to help diagnose A/C concern
- 11034769Jun 23, 2026This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
- 11032764May 11, 2026Pi created to provide GM dealers with information on gathering information for projection issue
- 11032763May 11, 2026This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- 11031948Apr 25, 2026This Preliminary information communicates an issue with a replace or low FOB battery message
- 11031717Apr 20, 2026This PI communicates information on a SPS programming issue causing Serial Data Authentication Configuration to fail.
Other or unknown: other model years
Other parts of the 2021 Cadillac CT5
13 complaintsBody and structure
7 complaintsTransmission and drivetrain
4 complaintsAir bags
2 complaintsForward collision avoidance
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBrakes
1 complaintsEngine
1 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsSteering
1 complaints
← All problems reported for the 2021 Cadillac CT5
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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