2021 Cadillac CT5 problems & reliability
25 owner complaints filed with NHTSA for the 2021 Cadillac CT5, alongside 4 safety recall campaigns. Last verified Sep 22, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several components.
2 complaints report injuries (2 injured).
Federal crash records (FARS 2020–2023): 2021 Cadillac CT5 vehicles were involved in 2 fatal crashes with 2 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System → | 10 | 40% |
| Structure | 6 | 24% |
| Power Train | 3 | 12% |
| Air Bags | 2 | 8% |
| Forward Collision Avoidance | 2 | 8% |
| Unknown / Other | 2 | 8% |
| Engine | 1 | 4% |
| Exterior Lighting | 1 | 4% |
| Fuel/propulsion System | 1 | 4% |
| Seat Belts | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 16 reported components →Complaints by incident year
What owners report
“Both front doors will no longer open from the outside. The button on the inside of the door handle doesn't respond when pushed and that is the only way to get in the car without rolling the windows down or using the emergency key. I've seen many other forum posts about this so it seems to be a pretty widespread issue…”
Electrical System · filed Sep 17, 2026
“Doors have routinely stopped opening using the electronic handles to pop open doors. Have taken to dealership to repair, but keep on not working on other doors. All 4 door handles have been replaced and now they're starting to not work again.”
Electrical System · filed Sep 17, 2026
“All four exterior door handles on my 2021 Cadillac CT5 have experienced the same intermittent failure. The handles initially work intermittently and then become unable to release the door. This has occurred on all four doors. This creates a serious safety concern because occupants may be unable to enter or exit the…”
Structure · filed Aug 31, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Air Bag Malfunction
Preliminary Evaluation PE21010 · opened Apr 9, 2021 · closed Aug 24, 2023
Technical service bulletins
799 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2021 Cadillac CT5. The 10 most recent:
This PI advises of a procedure for a Service Door Latch System message with No Related DTCs
PIC6555A · Service Bulletin/Repair Instructions · issued Sep 8, 2026
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP4902W · Service Bulletin/Repair Instructions · issued Sep 4, 2026
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
PIC6551C · Service Bulletin/Repair Instructions · issued Aug 20, 2026
PI to help diagnose A/C concern
PIT5099J · Service Bulletin/Repair Instructions · issued Jul 21, 2026
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
PIT5966F · Service Bulletin/Repair Instructions · issued Jun 23, 2026
Pi created to provide GM dealers with information on gathering information for projection issue
PIC6423A · Service Bulletin/Repair Instructions · issued May 11, 2026
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
PIC6551B · Service Bulletin/Repair Instructions · issued May 11, 2026
This Preliminary information communicates an issue with a replace or low FOB battery message
PIT6511 · Service Bulletin/Repair Instructions · issued Apr 25, 2026
This PI communicates information on a SPS programming issue causing Serial Data Authentication Configuration to fail.
PIT6507 · Service Bulletin/Repair Instructions · issued Apr 20, 2026
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
PIT3271Q · Service Bulletin/Repair Instructions · issued Apr 1, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2021 Cadillac CT5 has 4 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2021 Cadillac CT5?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.