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Vehicle safety record

2006 Cadillac STS Problems, complaints & recalls

Owners have filed 141 complaints about the 2006 Cadillac STS with NHTSA, most often about the airbags (58) and the engine & cooling (28). Those complaints describe 17 crashes, 6 fires and 20 injuries. It is covered by 4 recalls, the latest in September 2014 for the fuel pump. For comparison, the 2005 has 101 and the 2007 has 53.

NHTSA data checked

FFar more problems than a typical STS year, for its age

#93 most complained-about 2006 vehicle

Complaints
141
Recalls
4
Crashes
17
Fires
6
Injuries
20
Deaths
0

Most common 2006 Cadillac STS problems

Share of all 141 complaints. One complaint can name more than one area. Tap an area for its complaints and recalls.

2006 Cadillac STS recalls 4

Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do

Fuel system: fuel pump

14V54200010,005 vehicles affected

The problem
General Motors LLC (GM) is recalling certain model year 2004-2007 Cadillac CTS-V vehicles manufactured October 6, 2003, to March 15, 2007, and 2006-2007 Cadillac STS-V vehicles manufactured June 23, 2005, to March 15, 2007. In the affected vehicles, the electrical terminals of the fuel pump module may overheat resulting in the melting of the flange material.
The risk
If the flange melts, a hole may be created allowing the fuel pump to leak fuel, causing the vehicle to stall, increasing the risk of a vehicle crash. Additionally, leaking fuel in the presence of an ignition source increases the risk of a fire.
The fix
GM will notify owners, and dealers will replace the fuel module and fuel tank jumper harness, free of charge. GM sent out interim notices in late October. The recall began on March 12, 2015. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 14405.

Power train: seal

07V589000275,936 vehicles affected

The problem
On certain passenger vehicles, the rear axle pinion seal does not meet all of the specifications and may experience a fluid leak.
The risk
A rear differential failure may cause loss of motive power and possibly loss of control increasing the risk of a crash.
The fix
Dealers will replace the pinion seal free of charge. The recall began on february 1, 2008. Owners may contact cadillac at 1-800-458-8006 or http://www.Cadillac.Com; pontiac at 1-800-620-7668 or http://www.Pontiac.Com; and saturn at 1-800-972-8876 or http://www.Saturn.Com.

Fuel system: delivery

06V02000017,462 vehicles affected

The problem
Certain vehicles equipped with v6 engines may have a condition where fuel is no longer supplied to the engine. This condition occurs without the illumination of the fuel level low indicator light or the warning chime.
The risk
If the engine stops running, the operator will not be able to restart the vehicle which could increase the risk of a crash.
The fix
Dealers will reprogram the electronic control module (ecm) with new software free of charge. Owners were notified in december 2005 and asked to maintain at least 1/4 of a tank fuel level to avoid this condition until the parts are available. The parts are now available, owner renotification began on march 23, 2006. Owners may contact cadillac at 1-866-982-2339.

Vehicle speed control

06V0070001,327 vehicles affected

The problem
On certain passenger vehicles equipped with all wheel drive and a 3.6L v6 engine, the torque monitoring functions of the electronic throttle control (etc) are not enabled. These functions can limit engine speed and torque if unusual engine control module (ecm) hardware or software failures occur.
The risk
Without these functions enabled, a persistent ecm failure could result in a throttle opening greater than commanded by the driver and a crash could occur.
The fix
Dealers will reprogram the ecm on these vehicles free of charge. The recall began on january 24, 2006. Owners may contact cadillac at 1-866-982-2339.

What owners say

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141 complaints about the 2006 Cadillac STS

Newest first, as filed with NHTSA by owners. Page 1 of 6.

Steering

The contact owns a 2006 Cadillac STS. The contact stated that while reversing out of the driveway at approximately 2 MPH, the driver's side tie rod fractured into two pieces. The contact stated no warning light was illuminated. The vehicle was taken to an independent mechanic and the tie rod was replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 120,000.

Filed Incident SteeringNHTSA 11560931
Fuel system

The contact owns a 2006 Cadillac STS. The contact stated while inspecting the vehicle, he noticed fuel dripping from the fuel tank. The contact stated no warning light was illuminated. The vehicle was not taken to a dealer. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 14V542000 (Fuel System, Gasoline) however, the VIN was not included. The manufacturer was not informed of the failure. The failure mileage was approximately 140,000.

Filed Incident Fuel system, gasolineNHTSA 11439244
Electrical systemEngine & coolingFuel system

While driving, the entire panel goes "off" shutting down the car completely. The panel board is completely dark, no electric supply, no gas supply.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 11342769
Airbags

SERVICE AIRBAG ON THE DASH / AIRBAG LIGHT ON

Filed Incident Air bagsNHTSA 11319789
Electrical system

My car has been diagnosed as having 'extended crank'. My local chevy dealer made approximately fifteen attempts at fixing it to no avail. I'm told it's the check valve, but I have not had that done because all attempts by the dealer didn't work; e.G., New computer (and removed), battery (and removed), fuel pump, etc. Very frustrating and I feel it's a matter of health and safety because the car almost never starts on the first attempt, and sounds like it's a dead battery.

Filed Incident Electrical systemNHTSA 11318139
Airbags

I understand that 2006 cadillac cts has a recall for airbag problems. Cadillac doesn't deny that the same system was used in the sts. I've seen several complaints about the same problem. I just wonder why the sts was not recalled. I knew there was no warranty, and that's why I contacted cadillac. Knowing this they sent me for a diagnostic, which was a waste of time and money. The end result was that they said it's not under warranty. I would just like you to investigate to see if there should be a recall. This is a safety issue that cadillac should address. *Js

Filed Incident Air bagsNHTSA 11280319
Fuel system

Leaks fuel if you fill the tank to capacity. This was an earlier recall, exact same thing happening again.

Filed Incident Fuel / propulsion systemNHTSA 11235027
SteeringAcceleration & cruise controlFuel system

Certain times while driving, the traction assist comes on, and all power is lost to the engine. Lights are still on, car is still on, but gas does not accelerate and car is hard to steer. I have had to pull over 6 times in the last few months, turn the car off, restart and hope it does not happen again.

Filed Incident Steering · Vehicle speed control · Fuel / propulsion systemNHTSA 11231527
AirbagsFuel system

PUMP IS GOING OUT

Filed Incident Air bags · Fuel / propulsion systemNHTSA 11189889
Engine & coolingTransmission & drivetrain

Tl* 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.

Filed Incident Engine and engine cooling · Power trainNHTSA 11182836
SuspensionEngine & cooling

Purchased 2006 cadillac sts built on june 21 2005 last day of 2005 model. Car has had all the issues that 22005 vehicle had. June 23rd 2005 was first day of production. At every corner vin # are noted however for this model the build days which noted by cadillac are the important factors. I don't think coincidence that I've been companling to cadillacand asking for help with zero help. Catalytic converter was extended warrantee for 200000 and 12 years however cadillac always says vin even though dates are the...

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only thing noted. I have called and e,ail for 3 years. My car is off road and they have refused to look and even if I paid they wouldn't guarantee they would even look at the issues. My car is in absolute limbo neither a 2006 or 05 or whatever. They have refused every step even though it was based on recalls

Filed Incident Suspension · Unknown or other · EngineNHTSA 11182238
Other & unknown

A high pitch fire alarm noise intermittent going off inside vehicle sometimes deafening, causing the driver to loose all attention and covering ears from sound. The sound seems to be radiating from the 15.1 Bose sound system. This problem may present itself at different times weather car is stationary or moving at freeway speeds. This problem has been found in other models ie: cts, sts, srx, and other cadillac models with this sound system. It seems to be present in model years 2002-2010.

Filed Incident Unknown or otherNHTSA 11171038
Fuel system

Driving out of town stop got gas everything fine 20 min from then I pull over the side of road turn car get something out the trunk back in the car turn fuel gauge reads almost empty now I'm way out in the middle of nowhere.Did get any warning etc but now I don't know if I've gas it's reading empty.So had to cut the trip turn around to drive all back which was the six-hour drive I've to spend over $200 gas in the fear of not running finally gets in the shop work on decide to take another road trip and I cant believe this does it again now its back in shop.

Filed Incident Fuel / propulsion systemNHTSA 11083197
Airbags

SERVICE AIRBAG LIGHT STAYS ON.

Filed Incident Air bagsNHTSA 11076492
Airbags

Tl* the contact owns a 2006 cadillac sts. The contact stated that the air bag warning indicator illuminated and remained lit. The vehicle was taken to an independent mechanic, but the cause of the failure could not be diagnosed. The dealer was not contacted. The manufacturer was contacted and informed the contact that they would communicate with them once a solution was determined. The contact never heard back from the manufacturer. The failure mileage was approximately 110,000.

Filed Incident Air bagsNHTSA 11067371
Airbags

"TAKATA RECALL"

Filed Incident Air bagsNHTSA 11065401
Airbags

Tl* the contact owns a 2006 cadillac sts. The contact stated that the passenger side air bag warning indicator illuminated intermittently. The dealer and manufacturer were not notified. The failure mileage was approximately 100,000.

Filed Incident Air bagsNHTSA 11058351
Seats & seat belts

Airbag light is on telling you to service airbag. I took it to the shop they fixed it, 1 week later came back on. They said it has to do with the seat belt buckle. They said the part thet you connect to secure you in the seat belt needs to be replaced. Until then the airbag light stays on saying service airbag but it's really not the airbag it's the seat buckle. I was in motion on city street.

Filed Incident Seat beltsNHTSA 11052437
Airbags

Started receiving a constant, "service air bag" warning message after 125,000 miles. The dealer told me the passenger presence module needed replaced. It will cost $1,000 for the part, labor, and programming. Now I read on this forum that the same issue was found on the cts model and it was recalled by the manufacturer, but not the sts. It's difficult to justify putting that much money in an older vehicle.

Filed Incident Air bagsNHTSA 11025314
Airbags

Tl* the contact owns a 2006 cadillac sts. When the vehicle was started, the air bag warning indicator illuminated and remained lit. The dealer was contacted (orr cadillac, shreveport, la 71105, 318-798-7250) and stated that there was no recall. The manufacturer was made aware of the failure and stated that there was no recall. The vehicle was not repaired. The failure mileage was approximately 110,000.

Filed Incident Air bagsNHTSA 11022340
Airbags

Takata recall: service airbag warning appeared on the instrument panel. Auto is currently in the shop for analysis. The 2006 cts has the same airbag system. And it has been recalled. The sts has not. Why?

Filed Incident Air bagsNHTSA 11005075
Engine & cooling

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...

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apply extra strong pressure on the brake pedal because of the lack of power assist. After arriving at the dealer and shutting off the engine, the mechanic could not get the engine to restart. After extensive exposure of engine internal parts, dealer diagnosis was that a rocker arm had broken at one of the cylinders, resulting in debris falling through the valve opening into the cylinder and scoring the valve seat and the piston. The dealer recommended replacing the engine. -- At that time, the vehicle had accumulated 83,000 miles of moderate driving, and was only a little over 11 years old. The vehicle was purchased new from the dealer in december 2005, and had been maintained exclusively by that dealer since the vehicle was purchased. Subsequently, a new (remanufactured) engine was purchased from and installed by the dealer at a cost of $12,678.25. The vehicle was with the dealer for a total of six weeks to complete the repair and installation. -- Clearly, had the engine completely failed while driving on the freeway, intensive action would have been required to safely exit the freeway and to bring the vehicle to a stop (especially because of loss of power assist on the brakes). This would have placed my passengers in very high danger and personal risk.

Filed Incident EngineNHTSA 11002667
Driver assistance

When making right hand turns, the car stalls temporarily not allowing me to accelerate or acclimate to oncoming traffic. While this is happening, the traction active symbol is displayed on the dashboard. Within a few seconds it seems to all work again, however it seems to be a safety issue as other cars are either assuming I will be at their speed, or assume I am allowing them to go when in fact I am stuck. I have 3 children in the car and I am becoming scared that this may cause an accident and is a major safety concern.

Filed Incident Electronic stability control (ESC)NHTSA 11001777
Airbags

Passenger seat occupant sensor stops working, disabling the passenger airbag. 2006 Cadillac cts were recalled but the cadillac sts uses the same system but was not recalled. Airbag light came up while driving under normal conditions and its giving the error code associated with the occupant sensor mat system

Filed Incident Air bagsNHTSA 10985971
Other & unknown

Front passenger door does not always open from the outside while stationary, and/or in park, or whether the engine is running or off. If this car is ever in an accident, emergency workers would have to take extra steps, and valuable time, to try to successfully extract any victim from the passenger side. I see it has been reported before!

Filed Incident Unknown or otherNHTSA 10966558

Cadillac STS: every year compared

YearComplaintsRecallsCrashesFiresTop problemGrade
20104000Body, doors & structureA
200915040AirbagsC
200850162AirbagsF
200753260AirbagsF
20061414176AirbagsF
20051013134Electrical systemF
All STS years

2006 Cadillac STS vs rivals

More sales usually means more complaints, so compare similar vehicles of the same year. The grade compares each vehicle with its own model's other years.

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Questions about the 2006 Cadillac STS

Does the 2006 Cadillac STS have any recalls?

Yes - NHTSA lists 4 recalls for the 2006 Cadillac STS: fuel pump (September 2014); seal (December 2007); delivery (January 2006); vehicle speed control (January 2006). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.

What are the most common problems with the 2006 Cadillac STS?

By the complaints owners filed with NHTSA, the most common problem areas are the airbags (58), engine & cooling (28), electrical system (21).

How many complaints has the 2006 Cadillac STS had?

141 complaints have been filed with NHTSA, the first on September 26, 2005 and the latest on December 19, 2023. Of these, 17 describe a crash and 6 a fire, and together they report 20 injuries and 0 deaths.

Is the 2006 Cadillac STS a reliable vehicle?

Its Safety Index is 3 out of 100 (grade F: far more problems than a typical Cadillac STS year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.

Which Cadillac STS years have the most complaints?
What should I do if my 2006 Cadillac STS has a problem?

If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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