2006 Cadillac STS Engine cooling Problems
- Complaints
- 8about this part
- Share
- 6%of 139 total for the year
- Median mileage
- 74,750miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the engine cooling of the 2006 Cadillac STS, 6% of the 139 complaints for this model year. Where a mileage was given, the median is 74,750 miles. 1 of these say a crash was involved and 1 a fire, according to the filers.
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.
“The vehicle caught fire without cause at a walmart parking lot. When I came out of the store my car was on fire. The fire started in the door panel of the drivers side. I have no idea what caused the fire. Sterling heights fire dept was on the seen and put the fire out. My car was totaled.”
NHTSA complaint #10621189, filed 2014-08, 67,500 miles“Catalytic converter failed at approximately 83,000 miles. Check engine light comes on and the manufacturer and the dealer replaced the converter. At 93,000 miles, received check engine light warning again and the code indicates that the catalytic converter is a problem. The side affect is that the car lacks power when having a need accelerate. Gm has recalled the 2005 converter, but not the 2006.”
NHTSA complaint #10459026, filed 2012-05, 82,000 miles“Car stopped running while traveling on a freeway doing 70 MPH with no warning. Total loss of power, A/C, brakes, steering, and windows (loss of all power assisted functions and accessories).”
NHTSA complaint #10285685, filed 2009-09, 57,233 miles“Stopped the vehicle, placed into park position, shut off car and engaged emergency brake. Removed seat belt, driver and passenger opened doors to exit. Engine at that time went into a very high RPM making a horrible loud whining noise and auto accelerated in reverse with car in park and emergency brake on. Tried to stop the vehicle but brake pedal went to floor. No control of the vehicle and rode the vehicle as it reversed on its own, onto street, through the intersection ,colliding with a parked car and coming to rest with the rear of the car against a building. …”
NHTSA complaint #10359551, filed 2010-10, 55,000 miles“The contact owns a 2006 Cadillac STS. While driving various speeds, the vehicle hesitated and sputtered. The vehicle was taken to an independent mechanic who diagnosed that the catalytic converter was faulty and needed to be replaced. While the vehicle was being serviced, the mechanic discovered that the rear tow differential was faulty. The vehicle was not repaired. Woodworth Cadillac (339 n. Main street, andover, ma) and the manufacturer were notified of the failures. The failure mileage was 100,000.”
NHTSA complaint #11182836, filed 2019-02, 100,000 milesRelated service bulletins
- 10251890Mar 13, 2024This 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…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10247768Sep 1, 2023This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at…
- 10242843Sep 1, 2023The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10239101Jun 30, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2008 | 2 | 4% |
| 2007 | 1 | 2% |
| 2006 | 8 | 6% |
| 2005 | 7 | 7% |
| 2004 | 1 | 14% |
| 2003 | 3 | 38% |
| 2002 | 1 | 14% |
| 2001 | 1 | 8% |
| 2000 | 2 | 17% |
| 1999 | 6 | 46% |
Other parts of the 2006 Cadillac STS
57 complaintsElectrical system
21 complaintsEngine
20 complaintsFuel system
20 complaintsTransmission and drivetrain
13 complaintsElectronic stability control
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