IllustrationGASKET AND SEAL FAILURE ON 1994 CADILLAC DEVILLE CONCOURS:OIL PAN, CRANKSHAFT, BLOCK HALF SEAL, OIL FILTER PLATE. *NM
1994 Cadillac Deville
Owner reports · Recalls · Investigations
More warning signs than most Deville years
Owner complaints for the 1994 Cadillac Deville are substantially higher than the model-year median of 44.
About this comparison →How this year compares
Owner complaints by model year
Compare all Deville 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
Limited mileage data: 13 of 127 reports include usable mileage. There isn’t enough coverage to show a useful chart.
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.
- Engine And Engine Cooling. Review the 34 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
10 crash reports8 fire reports6 injury reports
Engine And Engine Cooling complaints
34 reports1994 CADILLAC DEVILLE HAD THE FOLLOWING REPAIRS PERFORMED: SPARK PLUG WIRE SET, THE ECU AND MAP SENSOR, THE AC COMPRESSOR AND THE WATER PUMP BELT.***NO ANSWER REQUIRED***. *MR THE CONSUMER STATED THAT THE ENGINE WOULD MISS AND FAILED TO RETURN NORMAL IDLE SPEED. THE VEHICLE MAINTAINED ABOUT 50 MPH WITHOUT THE CONSUMERS FOO…
Read full complaint
1994 CADILLAC DEVILLE HAD THE FOLLOWING REPAIRS PERFORMED: SPARK PLUG WIRE SET, THE ECU AND MAP SENSOR, THE AC COMPRESSOR AND THE WATER PUMP BELT.***NO ANSWER REQUIRED***. *MR THE CONSUMER STATED THAT THE ENGINE WOULD MISS AND FAILED TO RETURN NORMAL IDLE SPEED. THE VEHICLE MAINTAINED ABOUT 50 MPH WITHOUT THE CONSUMERS FOOT ON THE ACCELERATOR PEDAL. NOISES WERE HEARD COMING FROM THE ENGINE. THE ENGINE WOULD NOT RETURN TO IDLE WHEN THE OPERATORS FOOT WAS REMOVED FROM THE ACCELERATOR PEDAL. THE CONSUMER WOULD HAVE TO PAT THE ACCELERATOR PEDAL ONCE OR TWICE TO GET IT TO RETURN TO IDLE. *SC THE CONSUMER HAD T O PURCHASE A WATER PUMP BELT. *JB
OIL LEAK IN ENGINE FOR 1994 CADILLAC CONCOURSE-- WE HAVE AN OIL LEAK AS A RESULT OF THE MANUFACTURER NOT USING GASKETS FOR OIL PAN AND SEPARATE ENGINE PARTS. THE EXPENSE IS QUITE COSTLY AND WOULD NOT BE NECESSARY IF THE GASKETS HAD BEEN ORIGINALLY BEEN INSTALLED. THERE HAVE BEEN NO INJURIES OR FIRE, BUT FIRE COULD OCCUR BECAU…
Read full complaint
OIL LEAK IN ENGINE FOR 1994 CADILLAC CONCOURSE-- WE HAVE AN OIL LEAK AS A RESULT OF THE MANUFACTURER NOT USING GASKETS FOR OIL PAN AND SEPARATE ENGINE PARTS. THE EXPENSE IS QUITE COSTLY AND WOULD NOT BE NECESSARY IF THE GASKETS HAD BEEN ORIGINALLY BEEN INSTALLED. THERE HAVE BEEN NO INJURIES OR FIRE, BUT FIRE COULD OCCUR BECAUSE OF THE LEAK. *LA
HEAD BOLTS RIPPED OUT OF THE BLOCK AT A COST OF $2,500. THE WORK IS NOT GUARANTEED BECAUSE IF THE INSERTS DID NOT WORK CADILLAC ONLY ALLOY'S ONE FIX IF THE HEAD BOLTS RIP OUR AGAIN THEY INSTRUCT YOU TO THROW THE MOTOR OUT EVEN THOUGH IT RUNS WELL. BUT THEY DO NOT SELL JUST THE ENGINE BLOCK YOU MUST BUY THE ENTIRE MOTOR AND YO…
Read full complaint
HEAD BOLTS RIPPED OUT OF THE BLOCK AT A COST OF $2,500. THE WORK IS NOT GUARANTEED BECAUSE IF THE INSERTS DID NOT WORK CADILLAC ONLY ALLOY'S ONE FIX IF THE HEAD BOLTS RIP OUR AGAIN THEY INSTRUCT YOU TO THROW THE MOTOR OUT EVEN THOUGH IT RUNS WELL. BUT THEY DO NOT SELL JUST THE ENGINE BLOCK YOU MUST BUY THE ENTIRE MOTOR AND YOU MUST TAKE OUT THE MOTOR OUR TO DO THE HEAD GASKETS WITH A SPECIAL JACK THAT MUST BE PLACED UNDER THE CAR SO THE MOTOR CAN BE REMOVED FROM UNDERNEATH!!!!*AK
WHILE DRIVING THE VEHICLE STALLED OUT AND DIED WITHOUT WARNING CAUSING LOSS OF VEHICLE CONTROL. THE DEALER HAS REPAIRED THE VEHICLE.
HEAD BOLTS WORKED LOOSE AND STRIPPED AT 65000 MILES. DEALER REPAIRED BAD BOLTS. DID NOTHING ABOUT OTHER BOLTS. AT 92000 MILES AN ADDITIONAL 9 BOLTS HAD WORKED LOOSE CAUSING COOLING SYSTEM FAILURE. CADILLAC HAS MADE 3 CHANGES TO RECOMMENDED SERVICE PROCEDURE TO NOW REPAIR ALL HEAD BOLTS. THE ORIGINAL REPAIR AT 65000 MILES WAS DEF…
Read full complaint
HEAD BOLTS WORKED LOOSE AND STRIPPED AT 65000 MILES. DEALER REPAIRED BAD BOLTS. DID NOTHING ABOUT OTHER BOLTS. AT 92000 MILES AN ADDITIONAL 9 BOLTS HAD WORKED LOOSE CAUSING COOLING SYSTEM FAILURE. CADILLAC HAS MADE 3 CHANGES TO RECOMMENDED SERVICE PROCEDURE TO NOW REPAIR ALL HEAD BOLTS. THE ORIGINAL REPAIR AT 65000 MILES WAS DEFECTIVE. THIS ENGINE DESIGN SEEMS TO HAVE A DESIGN DEFECT. THERE A A NUMBER OF SIMILAR PROBLEMS LISTED FOR THE 1994 SEVILLE WHICH HAS THE SAME ENGINE AS THIS CAR. NLM
VEHICLE WAS DIAGNOSED WITH AN OIL LEAK IN THE ENGINE BLOCK. DEALER CONTACTED. *AK
ON SEVERAL OCCASIONS, THE SERVICE AIR BAG LIGHT ILLUMINATED, THE DEALER INSTALLED SOP DERM TO SOLVE THE PROBLEM, BUT PROBLEM STILL EXISTED, DEALER THEN TOLD CONSUMER THAT THE DRIVER'S SIDE AIR BAG WAS BAD. CONSUMER ADDS THAT THE WORK ORDER STATED THAT THE AIR BAG WAS CHECKED PER GOVT. MANDATED ELECTRONIC CONTROL MODULE FROM REP…
Read full complaint
ON SEVERAL OCCASIONS, THE SERVICE AIR BAG LIGHT ILLUMINATED, THE DEALER INSTALLED SOP DERM TO SOLVE THE PROBLEM, BUT PROBLEM STILL EXISTED, DEALER THEN TOLD CONSUMER THAT THE DRIVER'S SIDE AIR BAG WAS BAD. CONSUMER ADDS THAT THE WORK ORDER STATED THAT THE AIR BAG WAS CHECKED PER GOVT. MANDATED ELECTRONIC CONTROL MODULE FROM REPLACEMENT RECALL *95C72, MANUFACTUER WAS CONTACTED. *TT
THE ENGINE HAS A CRACKED BLOCK. AN INSPECTOR SAID IT WAS CAUSED BY FAULTY CASTING. GMC WANTS NOTHING TO DO WITH US.PLEASE HELP US. THANK YOU.*AK
WHILE DRIVING ENGINE CHECK LIGHT CAME ON. VEHICLE SUDDENLY DIED. CONSUMER TRIED TO RESTART AGAIN BUT VEHICLE KEPT DYING. CONSUMER HAD VEHICLE TOWED TO A SERVICE STATION, AND STATION MANAGER STATED THAT IT NEEDED A MAP SENSOR. PLEASE PROVIDE ANY FURTHER INFORMATION.*AK
Official recalls
0No recalls in this snapshot.
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
4PE98005 · Erratic Turn Signal Operation
Opened Feb 6, 1998 · Closed Aug 27, 1998
Status: closed (inferred from source dates) · Exterior Lighting
No summary supplied.
EA95025 · Dash Trim Separation
Opened Aug 31, 1995 · Closed Sep 30, 1996
Status: closed (inferred from source dates) · Unknown Or Other
A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER EXPENDITURE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
PE95025 · Dash Trim Piece Separation
Opened May 1, 1995 · Closed Aug 31, 1995
Status: closed (inferred from source dates) · Unknown Or Other
There is no summary currently available
SQ94016 · Brake Light Switch
Opened Feb 7, 1994 · Closed Mar 21, 1994
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights:switch
There is no summary currently available