1990 Cadillac Seville service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- Base Sedan 4-Door
- STS Sedan 4-Door
Engines covered
- 4.5L 273Cu. In. V8 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
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.
