1991 Cadillac Seville Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Cadillac Seville
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1991 Cadillac Seville ProblemsCar Won't Start Because of Anti-Theft System That Uses Raised-Chip Key
Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.
Excessive carbon build up in the engine combustion chambers may be the cause of a smog check failure due to excess NOx emissions. A "top engine" decoarbonization cleaning procedure will commonly correct this concern.
One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
1991 Cadillac Seville Questionsother than the fan and heater core what could cause little or no hot air blowing (2 answers)
The heater fan works but does not blow hot air when the heater is on. Warmer air does seem to seep into the cabin.
Passive struts were installed on the seville. How do I stop the warnig light from coming on?
replaced fuel filter, air filter, spark plugs and wires, new computer, change the oil had the tiimng checked and it does not have any codes showing up and NO CHECK ENGINE light on...