Cadillac STS Cadillac STS

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Cadillac STS repairs by problem area

Engine (29%)

Transmission and Drivetrain (8%)

Brakes and Traction Control (3%)

Suspension and Steering (10%)

Electrical and Air Conditioning (28%)

Paint, Rust, Leaks, Rattles, and Trim (15%)

Other (6%)

Chart based on 216 repairs.
See TSBs and recalls for the Cadillac STS.

Cadillac STS repair cost distribution

$2500+ (3%)

$1000 - $2499 (7%)

$500 - $999 (9%)

$100 - $499 (30%)

< $100 (50%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 141 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2011 Cadillac STS 4dr Sedan

302-horsepower 3.6L V6 6-speed shiftable automatic RWD

Cadillac STS in South Carolina, United States
- Jun 2014
Jun 2014

28000 mi
I believe something in the body control module needed to be reset. 

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2008 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 6-speed shiftable automatic RWD

Cadillac STS in New York, United States
- Jul 2011
Jul 2011

80 mi
Key FOB replaced 

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2008 Cadillac STS 4dr Sedan

302-horsepower 3.6L V6 6-speed shiftable automatic RWD

Cadillac STS in Virginia, United States
- May 2008
May 2008

9200 mi
rear end pinion seal. repaired under warrante 
Cadillac STS in Michigan, United States
- Mar 2008
Mar 2008

6000 mi
Had the dealer replace the driver exterior door handle, because it would not recognize the keyless fob to unlock the doors from the driver door. Covered by warranty. 

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2008 Cadillac STS 4dr Sedan

302-horsepower 3.6L V6 6-speed shiftable automatic AWD

Cadillac STS in Ohio, United States
- Mar 2013
Dec 2011

60500 mi

US $130
Remote start had an error code and would not work. System reset and is now operational. 
Feb 2013

95000 mi

US $195
Reprogram computer as remote start not operating. 
Mar 2013

105000 mi

US $1835
Replace wheel bearing right rear wheel along with considerable maintenance work for 100K maintenance. 
Cadillac STS in North Carolina, United States
Apr 2012 - Dec 2016
Oct 2016

211000 mi

US $150
Had a vibration in the rear end that needed to be repaired 
Cadillac STS in Rhode Island, United States
- Oct 2009
Oct 2009

5000 mi
Water in trunk. Trunk had to be sealed in corners. 

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2007 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 6-speed shiftable automatic RWD

Cadillac STS in Texas, United States
- Aug 2011
Jul 2008

4156 mi
Bluetooth will not pair up with phones made after September 2007. New software ordered. Loose bolt inside trunk lid, removed bolt and tightened spoiler Nav locking up when car in motion - dealer not willing to repair This car does not have HomeLink. It has a system that will not work with home security gates. THe vendor had to preprogram a new head until, ship to the dealer for installation. They also sent a service company to install a new receiver on my gate. 
May 2009

15018 mi

US $40
State inspection/smog test 
Nov 2009

22134 mi

US $103
Replaced right front fog lamp Inspect noise from front driver caliper/brake Inspected caliper noise Oil change 
Dec 2009

23626 mi
Replaced Striker Plate on driver door Driver headlamp not waterproof, inspection - dealer not willing to repair 
Jan 2010

24591 mi
Inspected noise from front driver caliper/brake Replaced striker plates on front and rear passenger doors. 

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2007 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 6-speed shiftable automatic AWD

Cadillac STS in Ontario, Canada
May 2016 - May 2018
Dec 2016

76260 mi

C $310
Abs and trac light come on in wet conditions. Then goes out when it dries up. Found corroded wire to the ebcm had to diagnose and repair rf wires to wss and main power wire to ebcm 
Jun 2017

80600 mi

C $300
Replace corroded headlight pig tail for pass sode xenon headlight assembly 100 plus hst dealer part.  Replace ACC cadillac emblem old one fell off while driving. Only adhered with glue. 160 plus hst. Dealer part. 

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2007 Cadillac STS 4dr Sedan

255-horsepower 3.6L V6 5-speed shiftable automatic RWD

Cadillac STS in Tennessee, United States
- Jun 2013
Feb 2013

135801 mi

US $850
Check engine light on. Dealership wanted an additional $2,699.81 w/ tax to put timing chain on engine. Picked car up and had a private mechanic install GM timing chain. OEM GM timing chain, guides, tensioners, gaskets, etc. installed by independent mechanics 
May 2013

138910 mi

US $1316
took back to mechanics when check engine light came back on and engine running rough again. mechanics could not fix recommended dealer for fix. After independent mechanics installed a timing chain and then 4 cam sensors on 5-2-2013 the engine still run rough. Dealer said it was a loose / worn bushing on a camshaft. Also timing off 2 teeth. 
Jun 2013

140450 mi

US $1500
Engine light on again. Car jerking when driving. Dealer found a timing gear slightly bent, they fixed it and that took care of the check engine light. However the jerking per dealer caused by torque converter failure. This issue not resolved Car in transmission shop after 100% complete transmission failure on 6-18-2013. Estimated cost to repair $ 2,500.00 to $ 3,500.00 
Cadillac STS in Manitoba, Canada
Sep 2014 - Sep 2017
Dec 2015

48360 mi
trunk lid cannot be opened with fob in close proximity. Repair needed a new antenna. Antenna has been ordered and installed. Switch on brake system that disables the cruise control was replaced. 
Mar 2016

49600 mi

C $130
Lost power steering fluid. Had car towed to dealer. PS aluminum bridge assembly was corroded and replaced. Pinhole leak in line leading from "rack" to bridge line required replacing of aluminum line. Glove box lock broken internally. 
Oct 2016

53320 mi

C $330
Splash shield (behind front bumper) came undone at trailing edge and became caught on the garage door floor. Needed replacement. 

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2007 Cadillac STS 4dr Sedan

255-horsepower 3.6L V6 5-speed shiftable automatic AWD

Cadillac STS in Alberta, Canada
Nov 2017 - Nov 2021
Jul 2017

93000 mi

C $400
Replaced faulty Bosch electronic ignition coil #2 
Nov 2021

131440 mi

C $150
Burnt out lamp Passenger door lock switch 

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2006 Cadillac STS 4dr Sedan

supercharged 469hp 4.4L V8 6-speed shiftable automatic RWD

Cadillac STS in Texas, United States
Jul 2017 - Jul 2018
Mar 2018

139000 mi

US $100
Coolant leak in one of the lines. Replaced the line and also the thermostat while I was at it. 
Cadillac STS in Arizona, United States
Jul 2010 - Oct 2011
Nov 2010

77000 mi
Rear end noise lead to new axle bushings and clutch plates. 
May 2011

85000 mi

US $800
water pump leak splash shield broke and had to be replaced 
Jul 2011

85000 mi
Thermostat not working. Had to order part 
Oct 2011

90000 mi

US $70
Air bag seat sensor went bad 

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2006 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 5-speed shiftable automatic RWD

Cadillac STS in Ohio, United States
Jan 2015 - Jan 2015
Jan 2015 Moisture between headlamp lenses caused Xeon bulb failure. 
Cadillac STS in New York, United States
Jan 2010 - Nov 2011
Dec 2010

66000 mi
Replaced motor and transmission mounts 
Apr 2011

70300 mi
The car needed a new motor mount. 
Nov 2011

76000 mi
Intermittant operation of A/C. Replaced seal. Check Engine light on, replaced thermostat and water pump. 

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2006 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 5-speed shiftable automatic AWD

Cadillac STS in Alberta, Canada
Apr 2014 - Jun 2018
Oct 2014

44320 mi

C $900
Full brakes and rotors as well changes tire pressure sensors and new all weather tires installed. The tire pressure sensors were corroded and seized on. Had to remove to add air and threads stripped. 
Jul 2016

54040 mi

C $800
Condenser in front got a pinhole from rock. Replaced condenser with Oem part Water pump leak. Pump and thermostat replaced. 
Cadillac STS in Ontario, Canada
Sep 2011 - Oct 2011
Oct 2011

111600 mi

C $969
Car began to making rotational noise local mechanic diagnosed within 5 minutes U-joint or hanger bearing. Enclosed drive shaft...recommended dealer repair 
Cadillac STS in California, United States
Apr 2013 - Apr 2014
May 2013

69700 mi

US $2500
Oil leak due to faulty seal, mfg. defect! GMC paid for approx. 1/3 of the repair after we dogged them for 6 months.Our extended warrenty had just run out when we noticed leak! 
Cadillac STS in Iowa, United States
Jun 2010 - Jul 2011
Oct 2010

54000 mi
replace alternator 

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2006 Cadillac STS 4dr Sedan

254-horsepower 3.6L V6 5-speed shiftable automatic RWD

Cadillac STS in Florida, United States
- Apr 2008
Apr 2008

27000 mi
Filed a Lemon Law claim after having a persistent squealing/squeaking noise in the steering column while turning the steering wheel. GM repurchased the car after seven (7) repair attempts during an eight (8) month period. 
Cadillac STS in North Carolina, United States
Feb 2011 - Jul 2013
Apr 2011

68000 mi

US $240
my air bag light came on 
Cadillac STS in South Carolina, United States
May 2010 - Feb 2012
Jul 2010

34500 mi
evaporative purge valve replaced 
Jul 2011

40250 mi

US $461
Condenser replaced; hole in condenser due to rocks/gravel getting between the pusher fan and condenser. Condenser replaced; hole in condenser due to rocks/gravel getting between the pusher fan and condenser. 
Dec 2011

42000 mi
noisy a/c actuator proximity trunk release inoperative 
Cadillac STS in Virginia, United States
May 2010 - Oct 2012
Apr 2011

60000 mi

US $100
Glovebox lock replaced. New fob batteries installed. 
May 2011

60000 mi

US $700
Replaced drivers side wheel bearing. Installed new front brake pads. Oil changed. 
Jan 2012

70000 mi

US $600
Service tire pressure module warning, could not fix. 
Cadillac STS in Ohio, United States
Sep 2014 - Jul 2015
Oct 2014

98700 mi

US $1800
Leaking power steering fluid. Bad rack and pinion assembly. Replaced along with both outer tie rods and power steering fluid lines. 
Cadillac STS in Ohio, United States
May 2009 - Dec 2013
Apr 2009

21000 mi
Replaced the hvac blower motor. It was starting to be a little noisy. 
Aug 2011

49000 mi
The check engine light had been on for several months. The car would not start one morning and I called onstar and they towed to the dealer. They said that they replaced a "purge valve" and there was no charge for the service or towing. 
Aug 2012

67000 mi
Coil on the #3 cylinder cracked and needed to be replaced. 
Sep 2012

69000 mi
The right side catalytic converter needed to be replaced and was covered under the cadillac warranty. 
Jan 2013

63600 mi

US $350
An ignition coil failed on one of the cylinders. 
May 2013

78000 mi

US $3400
Using 1 qt oil per 700 miles. Diagnosed as piston ring problem. Put in new rebuilt short block. After haggling GM paid labor, I paid parts. 
Cadillac STS in California, United States
Jun 2012 - Jul 2012
Jul 2012

55000 mi
Driver seat panel cracked. 
Cadillac STS in Ohio, United States
Sep 2011 - Jun 2012
May 2012

76300 mi
Lower end seals 
Cadillac STS in Mississippi, United States
Nov 2015 - Dec 2017
Oct 2017

114000 mi

US $250
Driver's seat belt pretensioner 
Dec 2017

118000 mi
electric door lock driver's door. Sometimes works sometimes have to use manual key. 
Cadillac STS in Florida, United States
May 2010 - Jan 2011
Dec 2010

58000 mi

US $660
Check Engine light on-drove for about a month. Replaced valve to repair-also cleaned injectors and replaced fuel filter this trip 

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2006 Cadillac STS 4dr Sedan

254-horsepower 3.6L V6 5-speed shiftable automatic AWD

Cadillac STS in New York, United States
May 2009 - Jun 2010
Sep 2009

33500 mi
Radio replaced by Cadillac dealer before vehicle pick up 
Cadillac STS in Michigan, United States
Mar 2016 - Aug 2016
Aug 2016

147000 mi
stabilizer bar was making noises 
Cadillac STS in Kansas, United States
Oct 2013 - Oct 2016
Dec 2013

55000 mi

US $200
Service engine 
Sep 2014

88000 mi

US $300
Passenger side floor wet when a/c on. Also steering wheel making squeaking. 
Aug 2016

143000 mi
Service air bag keeps coming on and horn stop working 
Oct 2016

152000 mi
Air bag light, horn not fixed. 

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2005 Cadillac STS

Engine not specified

Cadillac STS in South Carolina, United States
Sep 2009 - Mar 2010
Oct 2009

64000 mi
drivers seat would not adjust as normal. problem traced to damaged wire under seat.  also side panel on seat was damaged. part ordered. 
Cadillac STS in Oklahoma, United States
Nov 2011 - Dec 2011
Dec 2011

82000 mi
catalytic converter failed. 

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2005 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 5-speed shiftable automatic RWD

Cadillac STS in Georgia, United States
Jun 2007 - Mar 2010
Nov 2007

39000 mi
Shifter locked and I couldn't get it out of park. Repair was covered under warranty. 
Dec 2007

41000 mi
Shifter started getting hard to pull out of park again, so took it in before it completely locked up. Same repair, again under warranty. 
May 2008

49000 mi
Wheels sensors replaced on two wheels. They had been giving problems for several months, and dealership had performed "re-learn". Finally requested they just be replaced, and haven't had any more problems. 
Jul 2008

52000 mi

US $25
Service Engine light comes on intermittently. Not related to gas cap being loose. Happens about every 500-800 miles, then goes off again. Code is PO420, Converter system below threshold. Driving light/right blinker went out. Took about 45 minutes to replace due to location and front facia impeding access. 
Dec 2008

60000 mi
Fuel gauge quit after bad gas. Bought entire tank from salvage yard, which included both sending units and fuel pump. Had to remove exhaust, drive shaft, and suspension to access tank. Mass air flow sensor was cleaned to determine if it was causing SEL to come on. Oil from K&N air filter apparently was causing it. After sensor cleaned, light hasn't come back on. 
Cadillac STS in Wisconsin, United States
Oct 2011 - Aug 2012
Mar 2012

57000 mi

US $350
Replaced defective rear wheel bearing 
Cadillac STS in Florida, United States
Jul 2014 - Sep 2014
Sep 2014

148000 mi
CHECK ENGINE LIGHT CAME ON AND ENGINE RAN VERY ROUGH. THE PLUGS AND COIL PACKS NEEDED TO BE REPLACED. REPLACED VALVE COVER GASKETS TO SOLVE A LEAK. 
Cadillac STS in Texas, United States
Jun 2008 - Sep 2013
Feb 2010

53000 mi

US $168
Service engine soon light coming on. Replaced MAF sensor. 
Cadillac STS in California, United States
Feb 2009 - Jun 2014
Mar 2009

48000 mi
Whining noise in steering column at low speeds when turning. Check engine coolant on DIC. Coolant was full. Replaced coolant resevoir. A hole was punctured in driver's leather seat. Leather section was replaced. 
Dec 2012

129000 mi

US $800
LED lights out on steering wheel controls. 
Oct 2013

141700 mi

US $285
Check Engine light comes on every two weeks. No error code. Cause unknown. 
Cadillac STS in Indiana, United States
Jun 2012 - Jun 2014
May 2013

143300 mi

US $800
Automatic door release did not work. Stated the mechanic before installed the antenae incorrectly and cause a short that affected the drivers door, passenger door, and trunk. Only repaired drivers door. too costly for a car with 135,000mi. 
Jun 2013

147000 mi

US $370
A previous repair at another dealership on the passenger door release cause an electrical short and shorted the drivers door, passenger door, auto start and trunk releases. Had only drivers door repaired. 
Cadillac STS in Arizona, United States
Sep 2012 - Sep 2013
Aug 2013

109100 mi

US $4000
Aor leak in fuel system and a bad coil.  Catalytic converter is going out. 
Cadillac STS in Kansas, United States
Jan 2011 - Jan 2015
Mar 2013

109000 mi
check engine light would go on for a week then off for a day or two then back on again. Catalytic converter was showing as problem on computer, it was replaced under warranty work, since others have had same issue, but there wasn't a recall 
Jun 2014

126000 mi

US $1600
New shocks 
Jan 2015

106000 mi

US $139
Thermostat leak the shifter assembly was loose and a part had to be replaced 
Cadillac STS in North Carolina, United States
Oct 2011 - Sep 2012
Nov 2011

55000 mi

US $1293
Replaced rear suspension bushing. Leaking heater core had to be replaced. 
Sep 2012

60000 mi

US $460
Replaced water pump 
Cadillac STS in Pennsylvania, United States
Mar 2009 - Dec 2012
Jun 2009

35000 mi
Start button replaced. Finish was peeling off. Covered under warranty. 
Sep 2009

41000 mi
New interior trim around passenger door frame. Had curled under so that headliner edge was exposed. Covered under warranty 
Dec 2009

43000 mi
Water pump and front timing cover replaced. Engine was leaking oil and coolant. Drivers interior door handle replaced. Chrome was flaking off. both were covered under warranty 
Jan 2010

44000 mi
New underhood fuse panel. Car was stalling on the road and reported throttle control failure. Dealer found intermittent connection at fuse panel. Covered under warranty 

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2005 Cadillac STS 4dr Sedan

320-horsepower 4.6L V8 5-speed shiftable automatic AWD

Cadillac STS in Arizona, United States
Oct 2008 - Oct 2011
Oct 2009

51000 mi
Replaced 2 broken motor mounts. Replaced driver door weatherstrip. Replaced driver side seat bezel broke. 
Feb 2010

53000 mi
Driver's side window fell when trying to close window. It was raining pretty healthy at the time, so I went directly to the dealership. They replaced the regulator and were real nice about it, even drove me to work and back in their shuttle. 
Dec 2010

63000 mi

US $1200
I had what I thought was a water hose leak that turned out to be the water pump. I decided to have all belts and hoses replaced since the car is 5 years old and Arizona heat kills rubber and I don't want it breaking on the road. 
Feb 2011

64700 mi
Bad intake camshaft position sensor, required engine teardown 
Apr 2011

66000 mi
Mass Airflow Sensor Replacement - They needed to order some parts so it took an extra day, but they gave me a loaner car, so I am fine with that. 
Cadillac STS in Quebec, Canada
Jun 2012 - Sep 2014
Jul 2012

179800 mi

C $1
GM changed both catalytic converters and exhaust manifolds assembly and oxygen sensors under a special guaranty to 200000 miles or 14 years(only 2005). Works fine since then but still check engine on :( i have to replace MAF sensor. 
Apr 2014

210180 mi
GM changed the catalytic converters on a secret warranty 
Cadillac STS in Massachusetts, United States
Jun 2013 - Sep 2013
Sep 2013

67000 mi

US $300
Power steering hose leak 
Cadillac STS in Moscow City, Russia
Nov 2008 - Sep 2013
Jan 2009

29140 mi
Squeaking noise from front suspension when braking. Had front arm assembly replaced (two lower arms), all under warranty. Front left tire pressure sensor is lost from time to time. Tire pressure is also replaced under warranty. Squeaking noise from front suspension when braking. Had front arm assembly replaced (two lower arms), all under warranty. 
May 2009

30380 mi
Whistling sound under the hood.Gets louder when turning steering wheel on the parked car. Steering fluid was low.Drove 200km back home like that just fine. Turned out the power steering return pipe was corroded to leak fluid. Pipe replaced under warranty. 
Jul 2009

31620 mi
Farting sound from climate control: TSB #06-01-39009  LR tire sensor replaced. Drivers door lock replaced (did not need that one). 
Aug 2009

32240 mi
Check Engine light came on: catalyst converter not working. Ordered new one under warranty. The problem went away very soon which was the reason I could not replace the converter earlier when both got damaged by poor premium grade gasoline quality. Also noticed 3 LEDs on the horizontal rear brake light bar not working. The entire assembly was ordered under warranty. Connector on rear right side got rusted causing left rear side marker not working. Ordered wire assembly. 
Sep 2009

32860 mi
Horizontal rear brake light bar assembly ordered last month arrived and was replaced under warranty. 
Jul 2010

34100 mi
Discovered front differential gasket leak when changing oil at 55K km. Got new gasket $40, cost to replace $235 decided to do so when the problem will become serious enough. The shop checked and topped the oil (200ml) at 60K km at no charge Discovered front differential gasket leak when changing oil at 55K km. Got new gasket $40, cost to replace $235 decided to do so when the problem will become serious enough. The shop checked and topped the oil (200ml) at 60K km at no charge 
Mar 2011

37200 mi

$10
Front differential oil leak diagnosed earlier as gasket leak which would cost $400 to fix turned out to be an oil filling cap leak which was a $10 repair at the dealer shop including new cap. Garage mechanic was too hard on the cap I guess. Front differential oil leak diagnosed earlier as gasket leak which would cost $400 to fix turned out to be an oil filling cap leak which was a $10 repair at the dealer shop including new cap. Garage mechanic was too hard on the cap I guess. 
Cadillac STS in Wisconsin, United States
Apr 2009 - Jan 2011
Jun 2010

74000 mi

US $800
Both front wheel bearings replaced  
Cadillac STS in Wisconsin, United States
Feb 2016 - May 2018
Mar 2018

113000 mi

US $200
Front rotors & Pads(ceramic) 
May 2018

114000 mi

US $15
MAF showing Check engine code 
Cadillac STS in New Jersey, United States
Jun 2008 - Jun 2018
Oct 2008

39000 mi
Tire leaking air. Leak not due to tire -- in valve stem or wheel.  Passenger mirror memory function not working Squeaky seat Seat belt not retracting. oRadio loses its memory. Can't replicate at will. Dealer thinks I don't understand the radio. Complained of rattle in passenger door. Dealer proudly disassembled, insulated, and reassembled driver door. Passenger door still rattles.  Paint bubbling. Dealer admits it is a defect but body shop is backed up.  
Nov 2008

39000 mi
Seat belt retractor not retracting.  Door rattles, passenger side.  Paint bubbles.  Paint peeled off ignition button while in for service.  
Dec 2008

40000 mi
Replaced a part with cosmetic damage from a previous repair. Seat belt retractor needs parts replaced.  Navigation radio would lose memory from time to time.  Exterior mirror motor would not move mirror to correct position.  
Jan 2009

40000 mi
Fixed driver seat belt. Major rattle in dashboard after other in-dash warranty repairs. 
Jun 2012

61000 mi
Check Engine Light and loss of power. Catalytic Converter failed. Dealer replaced only the one that failed under 8 year emission warranty. 
Dec 2012

63000 mi

US $15
Check engine light came on with code P0442. Owner replaced fuel cap with new and reset CEL. 
Jun 2014

73000 mi

US $280
Replaced all 4 TPMS sensors. One wheel was leaking air around the valve. Other sensors had weak or dead batteries. TPMS now working, but air still leaking, must be the wheel. 
Apr 2015

78200 mi
Mass Air Flow Sensor came detached from air filter box. It unscrewed itself. 
Nov 2015

83900 mi
Check engine light. Reports MAF problems: P1101, P0068. Cleared codes. Code comes back periodically. 
Dec 2016

89000 mi

US $60
Replaced Mass Air Flow Sensor (MAF) due to P1101 P0068 P0174. Earlier efforts to clean the MAF did not fix the problem. Bought new MAF and installed it, which also did not help. Codes returned about two weeks later. The warning light comes and goes. It usually comes on with an outdoor cold start (<40 degrees F). I've since found a TSB that says the ECM can be reprogrammed because of these codes appearing on cold starts. I won't bother with the TSB because that will be a dealer work item = expensive. In retrospect, the MAF sensor replacement was not needed. The MAF code is a misleading indicator caused by an ECU problem. 
Cadillac STS in Florida, United States
Aug 2008 - Mar 2011
Sep 2008

44000 mi
Had transmission software updated.  Replaced seat belt pretensioner. 
Oct 2008

45000 mi
Woodgrain bezel around the navigation/radio unit faded at the top center section about 1/2 by 4 inches.. 
Nov 2008

46000 mi
Right side(passenger) headlight was retaining moisture. The power steering was making noise as if there were low or no fluid in it's system was told they could'nt replicate. 
Feb 2009

49000 mi
Power steering making a low/no fluid noise. Service air bag warning light keeps coming on. Ashtray was stuck open and would not close Replaced ashtray after ordering. 
May 2009

51000 mi
moisture in left front headlight 
Jun 2009

51000 mi
replaced left front headlight 
Aug 2010

63300 mi

US $1590
replaced the alternator and coil kit Alternator failed and the drivers air bag module shorted out.  
Dec 2010

65000 mi

US $148
I took car in for a CEL and oil change. Dealer said cats needed to be replaced and the right motor mount was bad. Dealer had to order parts. had cats replaced and  a left motor mount replaced and now told my transfer case needed repair. 
Jan 2011

66000 mi
transfer case repaired repaired the transfercase $1340 
Cadillac STS in Texas, United States
Jan 2012 - Sep 2012
May 2012

68700 mi

US $200
Drivers door would not open. Did not respond to keyless access system 
Cadillac STS in Pennsylvania, United States
Apr 2011 - Dec 2017
Dec 2011

61000 mi

US $100
coolant leaks, water pump 
Apr 2012

63300 mi

US $200
torque convertor two catalytic convertors steering rack and steering pump 
Jun 2012

65000 mi

US $3
front parking light 
May 2014

78000 mi

US $110
Shift linkage 
Jun 2015

87000 mi

US $100
P0113 
Aug 2017

139000 mi

US $100
Front hub bearings 

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2005 Cadillac STS 4dr Sedan

255-horsepower 3.6L V6 5-speed shiftable automatic RWD

Cadillac STS in Illinois, United States
Jan 2010 - Mar 2011
Feb 2010

97000 mi

US $2500
Catalytic converter on the right side clogged up.. resulting in the right side of the motor heating up and losing compression..Engine Change..was cheaper than a tear down... 
Cadillac STS in North Carolina, United States
Jun 2008 - Mar 2010
May 2009

25000 mi
steering wheel noise 
Cadillac STS in Indiana, United States
Jun 2008 - Mar 2010
Jul 2008

17000 mi
Rack and pinion boot tore, leaking. Finish on trim around radio/enviornmentals was flaking. 
Cadillac STS in Nevada, United States
May 2009 - Aug 2012
Jan 2011

43000 mi
Failure to start. Would not respond to jumper. Battery was OK. After tow to dealer, again jumper would not start. Sat for several hours and then started without assistance. Full check up could not find problem. car would not start after driving. Would not start for dealer. Discovered problem with starter motor. Replaced starter motor. 
Jun 2011

48000 mi
tire pressure monitor sending unit in right rear tire faulty. new unit installed. system reset. rear differential bushing broken. bushing replaced. 
Cadillac STS in New York, United States
Aug 2015 - Sep 2015
Aug 2015

102000 mi

US $150
Power steering pump needed to be replaced due to a leak in the system Brake master cylinder was leaking and needed to be replaced 
Cadillac STS in Georgia, United States
Dec 2008 - Jun 2011
Jan 2009

8000 mi
Replace windshield due to delamanation.  Replace both head light due to lens peeling. 
Mar 2009

9000 mi
When windshield was replaced, wipers was installed on wrong side. 
Cadillac STS in Georgia, United States
Mar 2011 - Feb 2013
May 2011

56200 mi

US $380
Bad starter 
Jan 2012

US $325
cowling covering underside falling off. 
Apr 2012

64300 mi

US $675
No power to ignition from start button 
Oct 2012

67300 mi

US $365
No power to ignition switch 

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2005 Cadillac STS 4-door

6-cylinder automatic 2WD

Cadillac STS in Georgia, United States
Jun 2008 - Mar 2010
Jul 2008

54000 mi
Traction Control Active, cuts engine out upon acceleration from a stop. 

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Cadillac STS Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Cadillac STS problems occur, check out our car reliability stats.