DESIGN FLAW? PLASTIC VALVE COVER FAILURE. OIL LEAKING ON ENGINE. *TR
2003 Cadillac Cts
Owner reports · Recalls · Investigations
More warning signs than most Cts years
Owner complaints for the 2003 Cadillac Cts are substantially higher than the model-year median of 101.
About this comparison →How this year compares
Owner complaints by model year
Compare all Cts years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
219 reports with mileage · 94 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 56 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 37 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
38 reportsPICKED UP VEHICLE FROM SHORT TERM PARKING IN APPROXIMATELY 7 DEGREE WEATHER. AFTER STARTING VEHICLE AND RUNNING FOR APPROXIMATELY 15 MINUTES NOTICE SEVERE POWER LOSS. WITHIN NEXT COUPLE OF MINUTES BLACK SMOKE WITH EXTREME BURNING SMELL FLOODED VEHICLE INTERIOR COMPARTMENT ALSO SMOKE STARTS TO COME FROM UNDER HOOD OF VEHICLE. …
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PICKED UP VEHICLE FROM SHORT TERM PARKING IN APPROXIMATELY 7 DEGREE WEATHER. AFTER STARTING VEHICLE AND RUNNING FOR APPROXIMATELY 15 MINUTES NOTICE SEVERE POWER LOSS. WITHIN NEXT COUPLE OF MINUTES BLACK SMOKE WITH EXTREME BURNING SMELL FLOODED VEHICLE INTERIOR COMPARTMENT ALSO SMOKE STARTS TO COME FROM UNDER HOOD OF VEHICLE. PULLED INTO SAFE LOCATION FOUND HUGE OIL LEAK ON LEFT SIDE OF ENGINE AROUND VALVE COVER. COULD HAVE POSSIBLY STARTED A FIRE DUE TO HIGHLY COMBUSTIBLE OIL BEING BLOWN ON ENGINE BUT LUCKILY DID NOT CATCH ON FIRE. CHECK ON-LINE FOUND TSB 05-06-01-007A STATING GM KNOWS THIS IS A PROBLEM. "WHEN OPERATING IN EXTREMELY COLD WEATHERCONDITIONS, SOME 2003-2004 VEHICLES WITH 3.2L V6 ENGINE MAY LEAK ENGINE OIL FROM THE CAM/VALVE SEALS, ESPECIALLY FROM THE LEFT SIDE JUST BELOW THE OIL FILL HOLE IN THE CAM/VALVE COVER." THIS IS QUITE A BIT MORE THAN A LEAK SINCE APPROXIMATELY A QUART OF OIL WAS BLOWN ON THE ENGINE IN ONLY A COUPLE MINUTES. IF THE ENGINE WOULD HAVE BEEN HOTTER THERE COULD EASILY HAVE BEEN A FIRE. SINCE THIS IS A KNOW ISSUE WITH A KNOWN CAUSE SHOULDN'T THIS BE TAKEN CARE OF BY GM OR AT LEAST THE SAFETY OF THE DRIVERS AND PASSENGERS SHOULD BE CONSIDERED. THEY HAVE A CORRECTION LISTED IN THEIR TSB THAT LOOKS TO FAIRLY INEXPENSIVE BUT SINCE THIS IS NOT ON A RECALL LIST THE COST FOR REPAIR WILL BE MUCH LARGER DUE TO THE BLOWN OUT GASKETS. IT COULD HAVE BEEN MUCH WORSE IF THE VEHICLE WOULD HAVE CAUGHT FIRE. TO FIX BEFORE THIS HAPPENS TO YOU USE GM PCV HOSE KIT, P/N 55558592 AND OIL FILTER CAP, P/N 12589430. *TR
TL*THE CONTACT OWNS A 2003 CADILLAC CTS. THE SERVICE ENGINE SOON LIGHT ILLUMINATED AND NOW THE ENGINE IS RUNNING HOT. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT ANTIFREEZE WAS LEAKING INTO THE ENGINE. THE ENGINE NEEDED TO BE REPLACED AT THE COST OF $7,000. THE VEHICLE IS CURRENTLY PARKED AND HAS NOT BEEN REPAIR…
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TL*THE CONTACT OWNS A 2003 CADILLAC CTS. THE SERVICE ENGINE SOON LIGHT ILLUMINATED AND NOW THE ENGINE IS RUNNING HOT. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT ANTIFREEZE WAS LEAKING INTO THE ENGINE. THE ENGINE NEEDED TO BE REPLACED AT THE COST OF $7,000. THE VEHICLE IS CURRENTLY PARKED AND HAS NOT BEEN REPAIRED. THE PURCHASE DATE WAS UNKNOWN. THE CURRENT MILEAGE WAS 73,076 AND FAILURE MILEAGE WAS 70,000.
I AM AND HAVE BEEN EXPERIENCING NUMEROUS FAILURES WITH MY VEHICLE. I HAVE CONTACTED GM NUMEROUS TIMES BEGINNING APPROXIMATELY A FEW MONTHS AFTER I PURCHASED THE VEHICLE TO INFORM THEM THAT THE VEHICLE IS DEFECTIVE, ONLY TO BE TOLD MY VEHICLE IS OUT OF WARRANTY, SO THEY REFUSE TO FIX IT OR GIVE MY ONE THAT IS NOT DEFECTIVE. MY VE…
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I AM AND HAVE BEEN EXPERIENCING NUMEROUS FAILURES WITH MY VEHICLE. I HAVE CONTACTED GM NUMEROUS TIMES BEGINNING APPROXIMATELY A FEW MONTHS AFTER I PURCHASED THE VEHICLE TO INFORM THEM THAT THE VEHICLE IS DEFECTIVE, ONLY TO BE TOLD MY VEHICLE IS OUT OF WARRANTY, SO THEY REFUSE TO FIX IT OR GIVE MY ONE THAT IS NOT DEFECTIVE. MY VEHICLE IS STILL DEFECTIVE TO THIS DATE. *TR
TL*- THE CONTACT HAS A 2003 CADILLAC CTS WITH A CURRENT AND FAILURE ODOMETER READING OF 71000 MILES. THE CONTACT STATED THAT SHE WAS DRIVING UNDER COLD DRY CONDITIONS AT ABOUT 55 MPH, WHILE EXITING THE FREEWAY SHE NOTICES DARK SMOKE COMING FROM UNDER THE HOOD OF THE VEHICLE. THE CONTACT WAS ABLE TO REACH A PARKING LOT, AND WHE…
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TL*- THE CONTACT HAS A 2003 CADILLAC CTS WITH A CURRENT AND FAILURE ODOMETER READING OF 71000 MILES. THE CONTACT STATED THAT SHE WAS DRIVING UNDER COLD DRY CONDITIONS AT ABOUT 55 MPH, WHILE EXITING THE FREEWAY SHE NOTICES DARK SMOKE COMING FROM UNDER THE HOOD OF THE VEHICLE. THE CONTACT WAS ABLE TO REACH A PARKING LOT, AND WHEN SHE LIFTED THE HOOD SHE SAW FLAMES. THE FIRE DEPARTMENT CAME OUT AND EXTINGUISHED THE FIRE, BUT WERE UNABLE TO DETERMINE THE CAUSE OF THE FIRE. THE CONTACT HAD THE VEHICLE TOWED TO THE DEALER AND THEY ALSO HAVE BEEN UNABLE TO DETERMINE THE CAUSE.
2003 CADILLAC CTS WITH 45852 MILES - OIL LEAKED FROM THE ENGINE CAM/ VALVE COVER SEALS DUE TO EXTREME COLD WEATHER OPERATIONS. I WAS MERGING ONTO A MAJOR HIGHWAY AND HAD JUST REMOVED MY FOOT FROM THE BRAKE TO THE ACCELERATE WHEN THICK BLACK SMOKE BEGAN POURING THROUGH THE HEATING SYSTEM INTO THE CAR. VISIBILITY WAS OBSTRUCTED …
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2003 CADILLAC CTS WITH 45852 MILES - OIL LEAKED FROM THE ENGINE CAM/ VALVE COVER SEALS DUE TO EXTREME COLD WEATHER OPERATIONS. I WAS MERGING ONTO A MAJOR HIGHWAY AND HAD JUST REMOVED MY FOOT FROM THE BRAKE TO THE ACCELERATE WHEN THICK BLACK SMOKE BEGAN POURING THROUGH THE HEATING SYSTEM INTO THE CAR. VISIBILITY WAS OBSTRUCTED AND BREATHING WAS IMPAIRED. WITHIN SECONDS, I WAS FORCED TO EVACUATE THE CAR. SMOKE BEGAN ROLLING OUT FROM BENEATH THE HOOD. I OPENED THE HOOD AND SAW SPARKING AND SMALL FLASH FIRES ALONG THE LEFT SIDE OF THE CAR NEAR THE TIRE. I WAS IN A RURAL AREA IN 20 DEGREE WEATHER AND WAS FORCED TO SLOWLY LIMP THE CAR TO A SAFER AREA TO GET HELP AND CONTACT TOWING SERVICE. AS OF DECEMBER 20TH, MY CAR HAS NOT BEEN REPAIRED AND I AM RECEIVING CONFLICTING INFORMATION BETWEEN CADILLAC AND THE DEALERSHIP. GENERAL MOTORS DOCUMENT ID # 1644918 STATES THAT THEY WERE AWARE OF THIS PROBLEM ON APRIL 7, 2005 AND ALSO STATES THAT TO PREVENT RECURRENCE AN AFTER MARKET PART MUST BE INSTALLED. HOWEVER, THERE HAS NOT BEEN A RECALL AND GENERAL MOTORS/CADILLAC ARE REFUSING TO ASSIST ME IN EITHER HANDLING THE ISSUE AS A WARRANTY OR REPAIRING THE CAR WHICH IS STILL AWAITING PARTS AND SERVICE AT THE DEALERSHIP. THIS IS A SERIOUS CONSUMER SAFETY ISSUE AS IT ONLY OCCURS DURING EXTREME COLD AND COULD POSE SERIOUS HEALTH CONCERNS DUE TO EXPOSURE AS WELL AS TRAFFIC INCIDENTS DUE TO VISIBILITY IMPAIRMENT FROM THE SMOKE. *NM
1. I PURCHASED A USED 2003 CADILLAC CTS IN 2005 WITH 45,000 ORIGINAL MILES FROM A GM DEALERSHIP IN ONTARIO, OREGON. IT WAS REPUTED TO BE IN EXCELLENT MECHANICAL CONDITION BY THE GM MECHANICS. 2. THIS VEHICLE HAS SINCE CUT ENGINE POWER SPONTANEOUSLY SEVERAL TIMES ON THE FREEWAY AND IN TOWN, PRESENTING SUDDEN AND SERIOUS DANGER T…
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1. I PURCHASED A USED 2003 CADILLAC CTS IN 2005 WITH 45,000 ORIGINAL MILES FROM A GM DEALERSHIP IN ONTARIO, OREGON. IT WAS REPUTED TO BE IN EXCELLENT MECHANICAL CONDITION BY THE GM MECHANICS. 2. THIS VEHICLE HAS SINCE CUT ENGINE POWER SPONTANEOUSLY SEVERAL TIMES ON THE FREEWAY AND IN TOWN, PRESENTING SUDDEN AND SERIOUS DANGER TO DRIVER, PASSENGER, AND OTHER MOTORISTS AS THE VEHICLE MUST BE STEERED POWERLESS TO THE MEDIAN/SHOULDER. ONCE WE WERE IN THE MIDDLE LANE OF 75 MPH FREEWAY TRAFFIC AND SEVERAL VEHICLES WERE NEARLY INVOLVED IN AN ACCIDENT. 3. GM TECH'S ARE UNABLE TO DIAGNOSE THE PROBLEM AFTER 7-8 ATTEMPTS, SO IT CONTINUES TO RECUR. GM REFUSES TO REPURCHASE THE VEHICLE DESPITE THEIR INABILITY TO DIAGNOSE, ENFORCE THE WARRANTY, AND THE OBVIOUS DANGER TO ALL INVOLVED. THE BETTER BUSINESS BUREAU WOULD NOT ARBITRATE BECAUSE MILEAGE WAS OVER 24,000. I AM CURRENTLY SEEKING LEGAL COUNSEL, BUT FEEL THIS VEHICLE SHOULD NOT BE ON THE ROAD. *NM
DT: VEHICLE LOST POWER WHEN THE CONSUMER HIT THE BRAKES. THE TRANSMISSION JOLTS AND THEN THE ENGINE SHUTS OFF. IT HAS BEEN TO THE DEALER 6 TIMES SINCE JANUARY. THE DEALER TRIED SOMETHING DIFFERENT EVERY TIME SHE TOOK IT IN. MANUFACTURER SAID SHE COULD HAVE A NEW VEHICLE IF SHE PAID FOR IT. SHE WANTED TO GET RID OF THE VEHICL…
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DT: VEHICLE LOST POWER WHEN THE CONSUMER HIT THE BRAKES. THE TRANSMISSION JOLTS AND THEN THE ENGINE SHUTS OFF. IT HAS BEEN TO THE DEALER 6 TIMES SINCE JANUARY. THE DEALER TRIED SOMETHING DIFFERENT EVERY TIME SHE TOOK IT IN. MANUFACTURER SAID SHE COULD HAVE A NEW VEHICLE IF SHE PAID FOR IT. SHE WANTED TO GET RID OF THE VEHICLE.*AK THE CHECK ENGINE LIGHT ILLUMINATED. *JB
2003 CADILLAC CTS, NO SEVICE LIGHTS ON, WHEN STOPPED AT LIGHT, SMOKE COMING FROM UNDER THE HOOD, THEN SMOKE INSIDE OF THE CAR. TURNED OFF ENGINE AND ASSISTANCE OPENED THE HOOD, FLAME UNDER HOOD AND SMOKE FROM FIRE NEAR BATTERY. WAS TOLD THAT PVC VALVE BURST UNDER PRESSURE FROM COLD OUTSIDE TEMPERATURES, CAUSED OIL TO SPRAY OVER…
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2003 CADILLAC CTS, NO SEVICE LIGHTS ON, WHEN STOPPED AT LIGHT, SMOKE COMING FROM UNDER THE HOOD, THEN SMOKE INSIDE OF THE CAR. TURNED OFF ENGINE AND ASSISTANCE OPENED THE HOOD, FLAME UNDER HOOD AND SMOKE FROM FIRE NEAR BATTERY. WAS TOLD THAT PVC VALVE BURST UNDER PRESSURE FROM COLD OUTSIDE TEMPERATURES, CAUSED OIL TO SPRAY OVER ENGINE AND UNDER HOOD AND BECAUSE ENGINE WAS HOT FROM USE, CAUSED IT TO IGNITE. ALSO TOLD THAT THIS WAS THE 3-4TH CAR REPORTED LAST WEEK TO ONE DEALERSHIP WITH SAME PROBLEM. NOT SURE WHAT REPAIRS WERE DONE, CAR IS REPAIRED TODAY.*AK
(1) FLICKERING DISPLAY LIGHTS; BUZZING WHEN TURN SIGNAL ENGAGED; BATTERY DIED AFTER 30,000 MILE MAINTENANCE; EIGHT [8] CONSECUTIVE TIMES OF "ENGINE HOT--AC TURNED OFF" ON DIC--LAST TIME WITH CHECK ENGINE LIGHT ON DISPLAY.*AK
Official recalls
414V394000 · Electrical System:ignition
Jul 2, 2014
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on July 2, 2014 that they are recalling 554,328 model year 2003-2014 Cadillac CTS vehicles manufactured August 16, 2001, to April 28, 2014, and 2004-2006 Cadillac SRX vehicles manufactured March 20, 2003, to August 11, 2006. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Consequence & remedy
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 15, 2014. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is 14172.
10V105000 · Service Brakes, Hydraulic:foundation Components:hoses, Lines/piping, And Fittings
Mar 17, 2010
GENERAL MOTORS HAS NOTIFIED NHTSA OF A DEFECT IN CERTAIN MODEL YEAR 2003-2007 CADILLAC CTS VEHICLES CURRENTLY REGISTERED IN OR ORIGINALLY SOLD IN CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON D.C., WEST VIRGINIA AND WISCONSIN. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH THE FRONT BRAKE HOSE FITTING AT THE CALIPER MAY CORRODE DUE TO SNOW OR WATER, CONTAINING ROAD SALT OR OTHER CONTAMINANTS, ENTERING AND BEING RETAINED IN THE ROUTING SLEEVE. IF THE FITTING CORRODES SIGNIFICANTLY, THE BRAKE HOSE-TUBE INTERFACE MAY DEVELOP A LEAK.
Consequence & remedy
Consequence: THE BRAKE HOSE-TUBE INTERFACE MAY RUPTURE SUDDENLY WITHOUT PRIOR WARNING AND INCREASE VEHICLE STOPPING DISTANCE MAY OCCUR INCREASING THE RISK OF A CRASH.
Remedy: DEALERS ARE TO REPLACE BOTH FRONT BRAKE HOSE ASSEMBLIES FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING MAY 2010. OWNERS MAY CONTACT CADILLAC AT 1-866-982-2339 OR AT THE OWNER CENTER AT WWW.GMOWNERCENTER.COM.
03V250000 · Equipment:other:owners/service/other Manual
Jul 15, 2003
CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." THE OWNER'S MANUAL DOES NOT EXPLAIN THE MEANING OF THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT LOWER UNIVERSAL ANCHORAGE SYSTEM.
Consequence & remedy
Consequence: THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.
Remedy: OWNERS WILL BE PROVIDED WITH A SUPPLEMENT FOR THEIR OWNER'S MANUAL. THIS SUPPLEMENT DESCRIBES AND SHOWS THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT ANCHORS THAT ARE LOCATED IN THE VEHICLE AND ON THE CHILD RESTRAINT OR BOOSTER CUSHION. OWNER NOTIFICATION BEGAN AUGUST 18, 2003. OWNERS SHOULD CONTACT BUICK AT 1-866-608-8080, CADILLAC AT 1-866-982-2339, CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, PONTIAC AT 1-800-620-7668, OR OLDSMOBILE AT 1-800-630-6537.
03V115000 · Steering
Mar 24, 2003
SOME PASSENGER VEHICLES HAVE A CONDITION IN WHICH THE INTERMEDIATE STEERING SHAFT BOLT MAY BE LOOSE.
Consequence & remedy
Consequence: AN IMPROPERLY TIGHTENED BOLT COULD LOOSEN, RESULTING IN SEPARATION OF THE UPPER AND LOWER STEERING SHAFTS CAUSING A LOSS OF VEHICLE CONTROL. IF THIS HAPPENS WHILE THE VEHICLE IS MOVING, A CRASH COULD RESULT WITHOUT PRIOR WARNING.
Remedy: DEALERS WILL INSPECT FOR THE PRESENCE OF THE INTERMEDIATE STEERING SHAFT BOLT AND ENSURE THAT IT IS TIGHTENED TO THE PROPER SPECIFICATION. OWNER NOTIFICATION BEGAN MARCH 20, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CADILLAC AT 1-800-458-8006.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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