Problems · by component
2003 Cadillac CTS engine and engine cooling problems
38 owner complaints to NHTSA about the 2003 Cadillac CTS cite engine and engine cooling, 12% of all 319 complaints for this model year.
Complaints
38
12% of all complaints
Crashes
0
Reported by owners
Fires
4
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine and engine cooling
Verbatim from NHTSA complaints, newest first
“2003 CADILLAC CTS. CONSUMER WRITES IN REGARDS TO VEHICLE STARTS UP AND DRIVES FOR A WHILE THEN SHUTS DOWN WITHOUT WARNING. *SMD THE CONSUMER ALSO STATED THE IDLER ARMS AND CRANK SENSORS WERE REPLACED. *JB”
“AN OIL LEAK AFTER DRIVING ABOUT 35 MILES, COMPLETELY DRAINED OIL. BROUGHT CAR TO CADILLAC DEALER WHO CHARGER ME $4500 TO REPAIR. LOOKED ON MYCARSTATS.COM WEB SITE AND SAW ANOTHER OF THE SAME PROBLEM...CASE #[XXX]. *TR”
“2003 CADILAC CTS. CONSUMER WRITES IN REGARDS TO PROBLEMS WITH BRAKE SYSTEM *TGW THE CONSUMER STATED THE METAL BRAKE LINE HAD TO BE REPLACED, DUE TO SEVERE CORROSION. THE CONSUMER STATED HE RECEIVED A RECALL LETTER TWO DAYS LATER. ALSO, THE STRUTS, THREE WHEEL BEARINGS, RADIATOR, TRANSMISSION COOLER LINE ALSO HAD TO BE REPLACED DUE TO CORROSION. THE CRUISE CONTROL AND GAS TANK, WHICH WAS LEAKING HAD TO REPLACED. *JB”
“UNDER 33,000 MILES ON THIS CAR. WHILE DRIVING DOWN A HILL I HEARD A LOUD CLANK NOISE. CAR LOST ALL STEERING AND BRAKE POWER COMPLETELY LOCKED UP. HAD TOWED TO SHOP AND THEY SAID TIMING CHAIN IS BROKEN AND PASSENGER SIDE OF ENGINE IS LOCKED UP WITH BENT VALVES. NO WARNING WHAT SO EVER. CHECK ENGINE LIGHT NEVER CAME ON. NOW THIS CAR NEEDS A NEW ENGINE. *TR”
“TL*THE CONTACT OWNS A 2003 CADILLAC CTS. THE CONTACT STATED WHENEVER THE VEHICLE WAS NOT STARTED FOR A FEW DAYS IT WOULD ONLY START WITH A JUMP START. THE VEHICLE WAS TAKEN TO THE DEALER AT LEAST THREE TIMES WHO STATED THE BATTERY CAUSED THE FAILURE TO OCCUR. A BRAND NEW BATTERY WAS INSTALLED BUT THE VEHICLE WOULD NOT START. THE CONTACT ALSO STATED THAT THE TRUNK WAS TOO HEAVY TO STAY IN THE UP POSITION EACH TIME SHE OPENED IT. THE TRUNK HAD FALLEN ONTO HER HEAD BUT THERE WERE NO INJURIES. THE MANUFACTURER STATED THAT THERE WERE NO RECALLS AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 90,100.”
“2003 CADILLAC CTS ALL I CAN SAY IS IM DISGUSTED WITH THIS CAR NOTHING BUT PROBLEMS. I DON'T KNOW IF THAT LEAKAGE THAT IS REPORTED ON HERE HAD SOMETHING TO DO WITH WHAT HAPPENED BUT NOW I HAVE A CAR SITTING IN MY DRIVEWAY WHICH I CAN'T USE BECAUSE IT HAS A LOUD KNOCKING SOUND COMING FROM ENGINE. WHICH MOST THAN LIKELY NEEDS REPLACED WHICH IS VERY EXPENSIVE CAN I SAY FIRST CADILLAC AND WILL NEVER BUY ANOTHER ONE EVER.. *TR”
Showing 6 of 38 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.