2006 Cadillac STS Cadillac STS 2006

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2006 Cadillac STS repairs by problem area

Engine (36%)

Transmission and Drivetrain (2%)

Brakes and Traction Control (0%)

Suspension and Steering (11%)

Electrical and Air Conditioning (43%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (7%)

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Chart based on 44 repairs.
See TSBs and recalls for the 2006 Cadillac STS.

2006 Cadillac STS repair cost distribution

$2500+ (5%)

$1000 - $2499 (3%)

$500 - $999 (18%)

$100 - $499 (21%)

< $100 (53%)

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

Chart based on 38 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2006 Cadillac STS 4dr Sedan

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

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 
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. 

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2006 Cadillac STS 4dr Sedan

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

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. 
Cadillac STS in Ohio, United States
Jan 2015 - Jan 2015
Jan 2015 Moisture between headlamp lenses caused Xeon bulb failure. 

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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 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 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

73000 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 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 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 
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 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 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 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 2011 - Jun 2012
May 2012

76300 mi
Lower end seals 
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 

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2006 Cadillac STS 4dr Sedan

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

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. 
Cadillac STS in Michigan, United States
Mar 2016 - Aug 2016
Aug 2016

147000 mi
stabilizer bar was making noises 
Cadillac STS in New York, United States
May 2009 - Jun 2010
Sep 2009

33500 mi
Radio replaced by Cadillac dealer before vehicle pick up 

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See TrueDelta's information for all Sedans
See TrueDelta's information for all Cadillac models.

2006 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 2006 Cadillac STS problems occur, check out our car reliability stats.