Cadillac STS Cadillac STS

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Expensive Cadillac STS repairs by problem area

Engine (50%)

Transmission and Drivetrain (13%)

Brakes and Traction Control (0%)

Suspension and Steering (25%)

Electrical and Air Conditioning (13%)

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

Other (0%)

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Chart based on 16 repairs.
See TSBs and recalls for the Cadillac STS.

Cadillac STS repair cost distribution

$2500+ (29%)

$1000 - $2499 (71%)

$500 - $999 (0%)

$100 - $499 (0%)

< $100 (0%)

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

Chart based on 14 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2008 Cadillac STS 4dr Sedan

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

60500 mi

US $130
Remote start had an error code and would not work. System reset and is now operational. 
95000 mi

US $195
Reprogram computer as remote start not operating. 
105000 mi

US $1835
Replace wheel bearing right rear wheel along with considerable maintenance work for 100K maintenance. 

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2007 Cadillac STS 4dr Sedan

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

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 
138910 mi

US $1316
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. 
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 
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. 
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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2006 Cadillac STS 4dr Sedan

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

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! 

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2006 Cadillac STS 4dr Sedan

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

73000 mi

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

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2005 Cadillac STS 4dr Sedan

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

109100 mi

US $4000
Aor leak in fuel system and a bad coil.  Catalytic converter is going out. 
126000 mi

US $1600
New shocks 
106000 mi

US $139
Thermostat leak the shifter assembly was loose and a part had to be replaced 
55000 mi

US $1293
Replaced rear suspension bushing. Leaking heater core had to be replaced. 
60000 mi

US $460
Replaced water pump 

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2005 Cadillac STS 4dr Sedan

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

63300 mi

US $1590
replaced the alternator and coil kit Alternator failed and the drivers air bag module shorted out.  
65000 mi

US $148
had cats replaced and  a left motor mount replaced and now told my transfer case needed repair. 
67000 mi

US $157
transfer case repaired 
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. 

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2005 Cadillac STS 4dr Sedan

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

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... 

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Cadillac STS Expensive Problems

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.