Problems · by component
2003 Cadillac CTS engine problems
29 owner complaints to NHTSA about the 2003 Cadillac CTS cite engine, 9% of all 319 complaints for this model year.
Complaints
29
9% of all complaints
Crashes
1
Reported by owners
Fires
3
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine
Verbatim from NHTSA complaints, newest first
“Everything was really grate no problems. My brakes sounds like there is LOTS of AIR Coming from somewhere. My key ignition sometimes want turn over or easy to come out. Than the car started running hot. I've had it looked at Few times and can't seem to fix the problem. I've even brought a new coolant box or another name for it.. so now I can't drive it because my fluids keep coming out of the coolant tank please help me I don't know what to do. To complete this message I've even had a smog twice nonpassable. - Thank you any Questions [XXX] call/ text”
“The contact owns a 2003 Cadillac CTS. The contact stated that when driving at various speeds the vehicle would suddenly stalled and the instrument panel would illuminate. The message stating "starting disabled remove key" would display. The contact stated that they would be able to coast and restart the vehicle. Other times the contact would have to pull over to the side of the road and restart the vehicle. The contact took the vehicle to the dealer who was unable to diagnose the vehicle. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 121,000.”
“TL* THE CONTACT OWNS A 2003 CADILLAC CTS. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE SUDDENLY SHUT OFF. AFTER RESTARTING THE ENGINE, THE VEHICLE OPERATED NORMALLY. THE CAUSE OF THE FAILURE WAS NOT DETERMINED. THE LOCAL DEALER AND MANUFACTURER WERE NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 128,900.”
“I BOUGHT THIS CAR FOR MY SON THAT GO TO COLLEGE AT SAN JOSE STATE UNIVERSITY, HIS BEEN USING THIS CAR SINCE 2015 TILL 2019. RECENTY ABOUT A MONTH AGO HIS COMPLAINING THE CAR HAS BEEN OVERHEATING FOR NO REASONS, HE SAYS THAT THE GAUGE GOES ALL THE WAY UP EVERYTIME HE DRIVE IT BUT ITS OK IF THE CAR ENGINE IS RUNNING BUT IN PARK MODE. WE ENDED UP GOT THE CAR TOWED TO MERCED. SINCE JULY OF 2019, THE CAR IS THE GARAGE AND NEVER DRIVE. WE ONLY START THE CAR MOSTLY TO WARP UP THE ENGINE BUT NOT DRIVE. WE HAVE A FRIEND MECHANIC LOOK AT IT AND CAN'T POINT OUT THE RIGHT PROBLEM, A LOT OF ASSUMPTION POSSIBLE THE THERMOSTAT, OR RADIATOR, WATER PUMP, OR THE FAN, ETC.”
“AT ABOUT APPROXIMATELY 4:22 AM THIS MORNING MY CAR WAS ENGULFED IN FLAMES IN MY DRIVEWAY. I WAS AWAKENED BY MY CADILLAC CTS 2003 CAR ALARM AS THE FLAMES WE'RE VISIBLE THRU MY BEDROOM WINDOW. AT WHICH TIME I RAN OUTSIDE TO TURN ON THE WATER HOSE TO TURN OFF THE FIRE AS MY FAMILY WAS SLEEPING IN THE HOUSE. MY HUSBAND'S CAR WAS RIGHT NEXT TO MY CADI THAT HAD A FULL TANK OF FUEL. I CALLED 911 AND THE FIRE DEPARTMENT ARRIVED TO TURN OFF THE FIRE ON THE CADILLAC CTS 2003. AND FOR MORE THAN TEN MINUTES THE FIRE WAS STILL BLAZING AS THE FIREMEN UNABLE TO CONTROL THE FLAMES. MY CAR IS GONE AS IT BURNED DOWN. PLEASE HELP ME TO UNDERSTAND WHY THIS HAPPENED. I ONLY CARRIED LIABILITY AS THIS WAS ALL I COULD AFFORD. I THANK THE LORD THAT EVEN WHEN WE WERE IN HARM'S WAY, HE JEHOVAH GOD PROTECTED US. ALL THE GLORY TO JESUS CHRIST THAT THEIR WAS NO LOST OF LIFE. MATERIAL THINGS CAN BE REPLACED. I AM GRATEFUL TO GOD FOR HIS MERCY AND GRACE. HE HAS TOTAL CONTROL AND I KNOW THAT HE WAS WITH US. I WAS NOT AWARE THAT THESE CARS HAVE A HISTORY OF CATCHING ON FIRE. I AM GLAD THAT WE WERE NOT ON THE ROAD WHEN THIS HAPPENED. MY MOTHER SUFFERED A STROKE AND THIS COULD OF BEEN MORE…”
“I WAS DRIVING DOWNHILL ON DALLAS RD IN WEST RICHLAND, WA I STARTED TO APPLY BRAKES TO TURN INTO QUAIL SPRINGS APARTMENT COMPLEX, IDK WHETHER IT WAS DUE TO THE ROAD OR THE WAY I HIT THE BRAKES BUT IT MOVED MY KEY OUT OF THE RUN POSITION CAUSING THE ENGINE TO TURN OFF, I WAS SLOWING DOWN PROGRESSIVELY FROM 55 MILES AN HOUR AND HEARD SOMETHING THAT SOUNDED LIKE MY ENGINE HAD FALLEN APART. AFTER GETTING IT STOPPED I POPPED THE HOOD AND NOTICED DAMAGE TO MY TENSIONER PULLEY IT HAD CAME OFF AND MY SERPENTINE BELT HAD SHREDDED, I CALLED AND GOT IT TOWED TO THE NEAREST PLACE I COULD TO GET IT LOOKED AT. WHEN REPLACING THE SERPENTINE BELT THEY SAID IT'D BE GOOD TO CHECK THE TIMING BELT AS WELL JUST IN CASE. UPON CHECKING IT THEY NOTICED PIECES OF SERPENTINE BELT HAD GOTTEN INSIDE OF THERE SOMEHOW CAUSING THE TIMING BELT DAMAGE. WITH THIS TYPE OF ENGINE IF TIMING BELT GETS RUINED 98% VALVES AND PISTONS KISS WHICH CAUSES BENT VALVES ON THE HEAD. I WAS TOLD THE CAR WOULD NOT RUN ANYMORE UNLESS I PUT A BRANDNEW ENGINE IN AND THEY WANTED TO CHARGE ME 6000 FOR THAT, I LOOKED UP A USED ENGINE ON EBAY FOR 650 THEY STILL WANTED 3000, I DON'T HAVE THAT KIND OF MONEY SITTING…”
Showing 6 of 29 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.