This 1990 Cadillac Seville factory service and repair manual is built around the 4.5L V8 (VIN 3) and the trim you actually own, so the torque values, wiring routes, and diagnostic steps inside are the ones Cadillac released for that exact configuration, not a generic Seville average.
Engines covered
- 4.5L V8 (273 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 4-door sedan
Trims covered
- Base
- STS
Known issues on the 1990 Seville. Three recalls are on federal record for this model year. The first covers the front seat belts: misaligned rear shoulder retractor assemblies can cause pendulum interference, so the belt either stays locked or fails to lock at all, raising injury risk for a rear occupant in a panic stop or crash. The second covers the frontal air bags: threaded inflator components damaged during assembly can separate when the inflator fires, letting hot combustion gases escape into the passenger compartment. The third covers the automatic transmission floor shift linkage: the shift control cable can disengage from the floor shift control, so the driver loses the gear indicator reference and can no longer tell what gear the transaxle is actually in, risking unexpected vehicle movement. Owners have filed 23 complaints for the year. The factory diagnostic and repair procedures behind each of those systems are here.
Whether you're inspecting the rear seat belt retractors, servicing the frontal air bag system, or tracing the shift linkage, it keeps you on the OEM procedure and the correct specification for your specific 1990 Seville.
THREADED INFLATOR COMPONENTS MAY HAVE BEEN DAMAGED DURING ASSEMBLY WHICH MAY ALLOW COMPONENTS TO SEPARATE WHEN INFLATOR RECEIVES A SIGNAL TO DEPLOY THE AIR BAG.
INFLATOR COMPONENT SEPARATION ALLOWS HOT COMBUSTION GASESTO ESCAPE INTO THE PASSENGER COMPARTMENT WH
REPLACE AIR BAG MODULES CONTAINING POTENTIALLY DEFECTIVE INFLATORS.
MISALIGNED REAR SEAT SAFETY BELT SHOULDER RETRACTOR ASSEMBLIES COULD CAUSE PENDULUM INTERFERENCE, CAUSING THE BELT TO REMAIN IN LOCKED POSITION OR TO TRAVEL FREELY WITHOUT LOCKING.
IN THE EVENT OF A PANIC STOP OR ACCIDENT, IF THE BELT RETRACTOR INERTIA LOCK DOES NOT ENGAGE, THE RE
REALIGN REAR SHOULDER BELT RETRACTOR ASSEMBLY.
TRANSAXLE SHIFT CONTROL CABLE MAY DISENGAGE FROM THE FROM THE FLOOR SHIFT CONTROL WITH LOSS OF GEAR INDICATOR REFERENCE AND SHIFT SELECTOR OPERATION.
DRIVER WOULD NOT BE ABLE TO DETERMINE ACTUAL GEARPOSITION THE TRANSAXLE IS IN, WHICH COULD RESULT IN
INSTALL A TRANSAXLE SHIFT CONTROL CABLE RETAINING CLIP TO PREVENT CABLE DISENGAGEMENT.
THROTTLE STUCK OPEN, CAUSING AN ACCIDENT.
SLAMMED ON BRAKES, VEHICLE STARTED SLIDING, CRASHED INTO ANOTHER VEHICLE, HAPPENED AGAIN, MAY 29, 1997, NOT CHECKED BY DEALERSHIP. *AK
DRIVER'S SIDE SEAT HEAD REST BROKE WHILE INVOLVED IN REAR END COLLISION. TT
PARKING EMERGENCY BRAKE FAILED TO RELEASE WHEN ENGAGED OUT OF PARK. FINGER SMASHED BETWEEN (2) GEARS W/PART GOING THROUGH FINGERNAIL. PLEASE DESCRIBE DETAILS.
I BOUGHT A NEW 1990 CADILLAC FROM CADILLAC DEALER IN 1990 THAT I HAVE DRIVEN ONLY 53,678 MILES, WELL CARED FOR AND GARAGED. .THE ABS MASTER BRAKE CYLINDER HAS BEEN LEAKING FOR SOME TIME AND I HAVE CO
Showing the 5 most serious of 24 complaints filed with NHTSA.
