1993 Cadillac Seville STS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1993 Cadillac Seville STS

1993 Cadillac Seville STS Problems

Replace Fuel Filter Every 30,000 to Prevent Fuel Pump Failure

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Car Won't Start Because of Anti-Theft System That Uses Raised-Chip Key

Problems with 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 key and ignition lock cylinder should be replaced to correct this condition.

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1993 Cadillac Seville STS Questions

horn will not work checked horns with power and they are good but will not beep (1 answer)

checked horns with power and they are good but will not beep from stearing wheel what to do now

when driving 40 m.p.h. the tach is @ 3,500, is this normal? (1 answer)

Tach red-lines @ 6,500+, what is the deal with these Northstar engines? Are they reliable?

Where is the mode door actuator located? Under the dash panel? And can i repair (1 answer)

No code came up. I just dont have any airflow coming out of vents.

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1993 Cadillac Seville STS Reviews

when I brake pedal and the car is hard not to
overheating issues
I love the way my car drives, smooth and comfortable and everything inside works. Only problem is the pretty fake wood trim around the gear shifter is breaking away. If I keep my speed below 65 I get between 25-35 mpg with cruise on, of course, depends on the road grade too. It is costly to maintain the way it needs.

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