This 1983 Cadillac Seville factory service and repair manual is built around this specific model year and trim, so the torque figures and repair sequences inside are the ones Cadillac published for the Seville itself rather than a generic full-size Cadillac procedure.
Engines covered
- 4.1L V8 (250 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, diesel
Body styles covered
- 4-door sedan
Trims covered
- Base
- Elegante
Known issues on the 1983 Seville. Three recalls are on federal record for this model year. The first covers the fuel system: the fuel filters were produced with an incorrect threaded fitting, similar enough in size that the fuel filter may appear to be correctly threaded onto the fuel line. The second covers the rear window defogger circuit: the fusible link protecting electrical components run through the ignition switch could come open during defogger operation, and with the Twilight Sentinel switch on and the headlight switch off, an open link results in a loss of headlights. The third covers the windshield wiper motor: the noise suppression capacitor in the wiper motor relay may overheat during operation. Owners have filed 2 complaints for the year and no technical service bulletins are logged. The factory diagnostic and repair procedures behind each of those systems are here.
From swapping in a correctly threaded fuel filter to tracing the fusible link behind an intermittent headlight failure, it keeps you on the OEM procedure for your specific 1983 Seville.
DURING WINDSHIELD WIPER OPERATION, THE NOISE SUPPRESION CAPACITOR IN THE WIPER MOTOR RELAY MAY OVERHEAT.
THE DEALER WILL MODIFY THE WINDSHIELD WIPER MOTOR DELAY RELAY BY REMOVING THE NOISE SUPPRESION CAPAC
THE FUSIBLE LINK, WHICH PROTECTS ELECTRICAL COMPONENTS CONNECTED THROUGH THE IGNITION SWITCH, COULD COME OPEN WHILE REAR WINDOW DEFOGGER IS IN OPERATION. IF TWILIGHT SENTINEL SWITCH IS ON AND HEADLIGH
DEALER WILL REPLACE DEFECTIVE FUSIBLE LINK WITH AN IMPROVED TYPE.
THE FUEL FILTERS WERE PRODUCED WITH AN INCORRECT THREADED FITTING. THE INCORRECT FITTING IS SIMILIAR ENOUGH IN SIZE THAT THE FUEL FILTER MAY APPEAR TO BE CORRECTLY THREADED ONTO THE FUEL LINE.
REPLACE THE FILTERS WITH THE CORRECT FILTERS.
THE IMPROPER THREADING COULD CAUSE A GASOLINE LEAK WHICH MAY RESULT IN AN UNDERHOOD FIRE WHEN EXPOSE
INTERMITTENT STALLING. *DSH
LOWER CONTROL ARM BROKE AT WHEEL, FELL ONTO GROUND; VEHICLE WAS STOPPED AT LIGHT, OTHERWISE WOULD HAVE HAPPENED ON FREEWAY. TT
