2005 Cadillac STS Engine Problems
- Complaints
- 12about this part
- Share
- 12%of 101 total for the year
- Median mileage
- 100,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the engine of the 2005 Cadillac STS, 12% of the 101 complaints for this model year. Where a mileage was given, the median is 100,500 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.
“Without warning my transmission stopped working . I can move the greer with out it collecting any greer . No engine check light nothing . I pulled the parking lot and had to be pushed out street .”
NHTSA complaint #11144600, filed 2018-11, 279,900 miles“The catalytic converter makes loud popping noises on passenger front side. Now is misfiring in cylinder 1 and also has unexpected gained speed without any gas peddle pushed. Gm extended the catalytic converter warranty to 200,000 miles due to converter problems. But my VIN they say isn't included. My car is a v6. My sister was the previous owner she said she never received any recall information. The website shows no open recalls but the work wasn't completed since she purchased in 2007. Gm website doesn't help at all.”
NHTSA complaint #10639705, filed 2014-09, 187,774 miles“I was driving along a city roadway when the vehicle's stability, traction control, and engine light came on simultaneously when all of a sudden the vehicle just stopped, almost causing the car behind me to collide with my vehicle. I called the dealer, lawley's GM store in sierra vista, az. Where I had just purchased the vehicle and told the service manager what happened...he sent a tow truck to pickup the vehicle and after inspecting the vehicle at the dealership told me it was the throttle body needing replacement...I bought a new one and had it installed. …”
NHTSA complaint #10607645, filed 2014-07, 67,000 miles“Twice drive on interstate (possible after rough area on interstate) reduce power light and no engine power atlanta, ga traffic nearly got hit several times trying to get to the side of the interstate. Now three times stop car put in park and engine will not shut off, light says put in park although it is in park or should be. The recall on the drive axle seal, Cadillac would not cover cost, I did pay to have it fixed at hoover, al Cadillac.”
NHTSA complaint #10649381, filed 2014-10, 72,500 miles“The vehicle intermittently loses engine/ electrical power while driving. When the power loss occurs, brakes and steering lose proper functionality creating a threat to the driver and passengers as well as other motorists. The vehicle then is unresponsive to the proper starting procedure. Restarting the vehicle is inconsistent. It may start immediately upon command or it may cause a theft procedure to initiate. The vehicles dic will possibly show the following prompts just before the shutdown failure occurs; service vehicle soon, service stability system soon, service A/C system soon. …”
NHTSA complaint #11244847, filed 2019-08, 155,000 milesRelated service bulletins
- 11007091Aug 5, 2024This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11004761Jun 28, 2024This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or…
- 10242298Aug 10, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10178949Jul 28, 2020This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC…
- 10178387Jul 27, 2020This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller…
- 10176326May 21, 2020This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10176607May 8, 2020This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10167437Oct 14, 2019This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the…
- 10160987May 7, 2019This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the…
Engine: other model years
Other parts of the 2005 Cadillac STS
23 complaintsTransmission and drivetrain
18 complaintsAir bags
11 complaintsFuel system
8 complaintsBrakes
7 complaintsEngine cooling
7 complaintsOther or unknown
6 complaintsSeats
6 complaintsVehicle speed control
6 complaintsExterior lighting
5 complaintsBody and structure
5 complaintsSuspension
5 complaints
← All problems reported for the 2005 Cadillac STS
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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