2009 Cadillac DTS problems & reliability
35 owner complaints filed with NHTSA for the 2009 Cadillac DTS, alongside 2 safety recall campaigns. Last verified Aug 7, 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 vehicles.
2 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2009 Cadillac DTS vehicles were involved in 13 fatal crashes with 11 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 → | 12 | 34% |
| Service Brakes | 6 | 17% |
| Seats | 5 | 14% |
| Engine | 4 | 11% |
| Fuel/propulsion System | 3 | 9% |
| Steering | 3 | 9% |
| Unknown OR Other | 3 | 9% |
| Fuel System, Gasoline | 2 | 6% |
| Structure | 2 | 6% |
| Visibility | 2 | 6% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 57,000 miles (middle 50% between 41,500 and 76,751 miles), based on 24 complaints that included mileage.
Complaints by incident year
What owners report
“The contact owns a 2009 Cadillac DTS. The contact was driving at 55mph on the highway and the vehicle slowed down independently and the screens went blank. The contact pulled over to the shoulder of the road. The vehicle was shut off but would not restart. The contact called the police and the officer called a tow…”
Electrical System · filed Feb 23, 2022
“I filed a complaint in 2016 (complaint no. 10823262) related corrosion of the rear brake lines. This complaint is similar but related to corrosion of the front brake lines in which I again had a similar life threatening experience. The ordinary "corroded" steel lines were replaced with "vinyl coated" lines. I never…”
Service Brakes · filed Oct 4, 2019
“Cant bring driver or passenger seats up or down resulting in uncomfortable driving position in drive, neutral, park, all gears. Distance sensors malfunction frequently when going into reverse.”
Unknown OR Other · filed Oct 2, 2019
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
960 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2009 Cadillac DTS. The 10 most recent:
New Vehicle Monitoring Programs Section in IVH
13598 · Other · issued Sep 9, 2025
This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may…
PIC5650M · Service Bulletin/Repair Instructions · issued Aug 7, 2025
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
PIP5601C · Service Bulletin/Repair Instructions · issued Jul 18, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or…
PIP5358D · Service Bulletin/Repair Instructions · issued Feb 20, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe…
PIT5074Q · Service Bulletin/Repair Instructions · issued Dec 7, 2024
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723J · Service Bulletin/Repair Instructions · issued Oct 25, 2024
This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
04-06-04-051J · Service Bulletin/Repair Instructions · issued Sep 27, 2024
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 2009 Cadillac DTS has 2 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 2009 Cadillac DTS?
- · 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.
- · Owners most often reported problems around 57,000 miles — budget accordingly if the car is approaching that mileage.