2003 Cadillac CTS Cadillac CTS 2003

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2003 Cadillac CTS repairs by problem area

Engine (51%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (13%)

Suspension and Steering (8%)

Electrical and Air Conditioning (14%)

Paint, Rust, Leaks, Rattles, and Trim (3%)

Other (4%)

Chart based on 144 repairs.
See TSBs and recalls for the 2003 Cadillac CTS.

2003 Cadillac CTS engine repair cost distribution

$2500+ (8%)

$1000 - $2499 (22%)

$500 - $999 (35%)

$100 - $499 (27%)

< $100 (8%)

Chart based on 37 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2003 Cadillac CTS

Engine not specified

110000 mi

US $5000
lots of electrical problems, cracked heads requiring engine to be rebuilt, currently needs head job again, transmission needs to be repaired, heater not working, back window motors gone!!! car from HELL!!! 
110000 mi The car ran hot about 1 month ago and it's a total loss now. The engine is gone! The car is currently junked. 
127000 mi

US $313
Crankshaft position sensor. Code PO335. 
66000 mi

US $787
Engine ran hot, took to two different dealerships and was quoted repair costs of $2000 and $5000 respectively. Had car towed to John's auto in Hazel Park Mich. Paid $787.40 to replace radiator and flush system.Problem solved! 

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2003 Cadillac CTS 4dr Sedan

220-horsepower 3.2L V6 5-speed manual RWD

150000 mi

US $600
Could not pass smog 
125000 mi Blown head gaskets. 

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2003 Cadillac CTS 4dr Sedan

220-horsepower 3.2L V6 5-speed automatic RWD

25000 mi Exhaust manifold gasket replacement 
27000 mi Thermostat/Exhaust manifold gasket replacement 
48000 mi

US $27500
I basically bought a lemon. The car the first few weeks was awesome, had to replace the tires, windshield first month. Had to replace the brakes and rotors. Car has check engine light on, leaking oil and coolant. Just did the 100k mile warranty 
85000 mi sensor 
86000 mi

US $2065
oil leaking from both valve cover gaskets front o2 sensor replaced Rear o2 sensor replaced 
88000 mi o2 sensors front and rear replaced again - under warranty no charge 
88000 mi Corrosion was developing around the oil fill cap, suspected that a head gasket was going because water in oil. 
224000 mi EVAP solenoid is damaged Each time I fill in gaz, it won't start easily This is the second time I face this problem and the EVAP had been changed 10 months ago. 
89500 mi

US $50
Valve cover gasket leaking 
92000 mi

US $45
Replaced crank angle sensor 
172000 mi

US $350
Engine head gasket leak, oil leaks around valve cover. 
97000 mi Unexpected stalling. Required new transmission sensor. 
98000 mi Valve cover gasket leaking oil when sold. 
93000 mi

US $789
Remove and replace thermostat 
95300 mi

US $50
replace gas cap 
130000 mi

US $875
replace seals on motor head gaskets 
136300 mi

US $528
replace throttle boby 
101000 mi

US $1500
A few days after dealer performed 100,000 service car wouldn't start. Dealer claimed carbon buildup and cleaned heads and valves.  Also replaced several sensors. 
71300 mi

C $100
Also small oil leak,rocker cover gasket needed to be replaced and ordered, also warrenty. 
78740 mi

C $60
Crank position sensor, cheap repair,common prob wit 3.2L,car wouldnt start,key stays turned to start by itslef then gives up,several attempts,let sit for 1hr car started and drove it home, next day drove to the shop and had it repaired 
80600 mi

C $250
45000 mi Crankcase sensor went out. 
61295 mi

US $625
Electronic Control Module 
64000 mi

US $5100
Blown water line. Had a major replacement of all rubber under the hood: timing belt, water pump, all hoses, valve cover gaskets. 
64000 mi Needed new water pump. 
46500 mi

C $495
thermostat broken. Seal and thermostat on backorder, had to take vehicle back at a later date. 
46500 mi

C $580
Thermostat broken. Seal and thermostat on backorder, had to take vehicle back at a later date. Month: December 2007 outcome, ordered parts. 
33356 mi slightly rough idle, brought rpm's up to about 750-800, seemed to help quite a bit.If it holds at those rpm's and computers don't re-adjust. 
75020 mi

C $520
Long time for heater to throw heat. Figured it was the thermostat. Took to dealer and got P128 fault. Thermostat replaced and intake manifold gaskets replaced b/c had to be removed to make repair. Decided to replace spark plugs also. 
145000 mi

US $1500
L/R Valve Covers Replaced/Regasketed. New coil pack. New thermostat. 
89000 mi

US $500
Thermostat replaced. 
94000 mi

US $305
Oxygen sensor, bank 2 #2 
97000 mi

US $697
Replaced valve cover gasket, and resealed. Leaking oil had previously damaged the oxygen sensor replaced at last visit. O2 sensors cleaned and replaced. Same O2 sensor dropped a code on the way home - O2 sensor re-replacement pending. 
98000 mi

US $500
Oxygen sensors re-replaced. No further codes. 
100000 mi

US $1200
Replaced lower intake gasket and PCV hose for the oil leak that continued after the last repair. Re-replaced gaskets as needed for access. 
118000 mi New water pump 
70500 mi

US $1080
Oil leak from valve covers. Replaced gaskets. Coolant leak from water pump area. Replaced water pump. 
80000 mi

US $373
Replaced crank position sensor 
73780 mi

Throttle body replacement 
75640 mi

small engine cooler inside the engine leaked radator water, need to be replaced part cost US$ 180 labour charge US$ 70. 
84940 mi

Replacement of cranck sensor. Radiator repair. 
88040 mi

Overheat problem, Mechanic replaced the thermostat, it took one week to get the part, no problem after part replacement. 
59000 mi Pvc valve broken and there was an oil leak 
69300 mi

US $750
Oil cooler part died. The part is being repaired and the engine flushed. 
72000 mi

US $320
replace thermostat 
75500 mi

US $250
gas vapor valve 
84000 mi Bearing for a belt 
86000 mi

US $80
Oil sending unit switch 
147000 mi

US $1500
valve cover gasket and sending unit leak, power gear leak thermostat stuck open throttle body adjustment 
68200 mi

C $100
car would not start in the morning, brought it into the shop and found that there was spark and fuel so had to be a sensor. Crank sensor failure. 

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2003 Cadillac CTS 4dr Sedan

178-horsepower 2.6L V6 5-speed automatic RWD

39060 mi

Fire under the hood while driving. Oil leak from head gasket detected. Had to replace head gaskets, the cover, burned wires and vacuum hose. Waited 3 weeks for parts to arrive. 
41540 mi

Replaced head gasket covers. 
62000 mi

Generator belt broke in the middle of drive. The promlem was caused by tensioner falling apart. The car had to be towed as one belt is used for steering, AC, generator and water pump. Do not neglet routine maintenance to avoid such a hassle 

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2003 Cadillac CTS Engine 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 2003 Cadillac CTS problems occur, check out our car reliability stats.