2006 Cadillac STS Engine Problems
- Complaints
- 20about this part
- Share
- 14%of 139 total for the year
- Median mileage
- 77,402miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 20 complaints about the engine of the 2006 Cadillac STS, 14% of the 139 complaints for this model year. Where a mileage was given, the median is 77,402 miles. 3 of these say a crash was involved and 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was traveling through the countryside on my way home from work. My car suddenly stalled, I lost control of the vehicle and slammed into an on coming car in the other lane. This caused permanent traumatic brain injury as our airbags never deployed causing us to slam our heads off windshield and side door window.”
NHTSA complaint #10672833, filed 2015-01, 85,000 miles“The engine shut off when I was driving on a side street at 20 MPH, and also shut off 5 times as I was driving on the highway at 65 MPH. The cluster panel turned off, but the radio stayed on. The odometer showed a message engine control module (ECM). I pulled over, put the car in park, and restarted the vehicle each time. The Cadillac dealership said that rear axle pinion seal was the only recall for my STS, but I am experiencing NHTSA campaign number: 06v020000 , and NHTSA campaign number: 06v007000 also.”
NHTSA complaint #10505490, filed 2013-04, 78,142 miles“This problem started over a year ago and I have had it to the dealer twice and they can no find the problem because there are no codes in the car. While driving the car it shuts down and you lose everthing lights, turn singles, hazards,the dash goes totaly out and the engine stops the best you can do it to pull it over to the side of the road and hope you don't get hit. I have had this happen it town driving and on the highway so it has nothing to do with speed. I have loaned my car to other people and it has happened to them so it is not the driver. …”
NHTSA complaint #10763012, filed 2015-09, 133,000 miles“The fuel delivery system has been failing in the same manner that I have seen many other Cadillac owners have gotten repaired through a recall already in place. Every single time I put gas in the tank the car refuses to turn on with the first attempt. The only way to get the car to turn on is after multiple attempts and finally enough fuel gets delivered to the system. Similarly, the car will hesitate or feel like no gas is being delivered to the engine while driving on the highway. Often, it will cause a dramatic drop in speed causing a dangerous situation. …”
NHTSA complaint #10661288, filed 2014-11, 45,000 miles“On thursday 18 may 2017, while driving north on interstate 405 in heavy traffic at normal speeds, the engine began to miss out; and the brakes lost power assist. The problems persisted and worsened, so I exited the freeway to surface streets and began the trip back south on interstate 405 to take the vehicle to the dealer for diagnosis and repair. When stopped on surface streets (and on the freeway), it was necessary to shift to neutral and add fuel to the engine to keep it running. Also, it was necessary to apply extra strong pressure on the brake pedal because of the lack of power assist. …”
NHTSA complaint #11002667, filed 2017-07, 83,000 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…
- 10173416Feb 28, 2020This informational bulletin explains Unscheduled Supplemental Services (including Flushing Services and Additives) and the Proper use of GM Simplified Maintenance Schedules.
- 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…
Engine: other model years
Other parts of the 2006 Cadillac STS
57 complaintsElectrical system
21 complaintsFuel system
20 complaintsTransmission and drivetrain
13 complaintsElectronic stability control
8 complaintsEngine cooling
8 complaintsOther or unknown
7 complaintsSeats
6 complaintsVehicle speed control
6 complaintsBrakes
5 complaintsSteering
5 complaintsSeat belts
4 complaints
← All problems reported for the 2006 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