1991 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
- 4.9L 300Cu. 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
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
COLD START RATTLE NOISE (DIAGNOSIS/SERVICE PROCEDURE). *TW
COLD START RATTLE NOISE. *TW
COLD START RATTLE NOISE. *TW
VEHCLE WAS HIT IN THE FRONT RIGHT SIDE AT 55MPH BY ANOTHER VEHICLE AND RAN INTO A GUARDRAIL. DRIVER'S SIDE AIRBAG DID NOT DEPLOY. CAR WAS TOTALED. DEALER DID NOT SEE. *AK
ABS: WHILE DRIVING DOWN STEEP ROAD, APPLIED BRAKES; PEDAL WENT TO FLOOR; NO BRAKES AT ALL; SHIFTED TO PARK, KEPT PICKING UP SPEED; HIT TWO PARKED CARS. TT
MINIVAN STOPPED SUDDENLY, VEHICLE REAR ENDED IT, AIR BAG ON DRIVER'S SIDE DID NOT DEPLOY UPON IMPACT. *AK
DRIVERS SIDE SHOULDER BELT DID NOT ENGAGE PROPERLY WHEN REAR ENDED ANOTHER VEHICLE. TT
Showing the 4 most serious of 28 complaints filed with NHTSA.
