1991 Cadillac Seville STS Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Cadillac Seville STS

1991 Cadillac Seville STS Problems

Electrical Level Ride System May Fail

The electronic level ride system may not work properly; this may result in the rear of the vehicle riding too high or too low. Our technicians tell us that a height sensor or exhaust valve failure are common issues with this system. Proper diagnoses will be necessary to confirm the exact fault.

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.

The Trunk Lid Won't Close Due to Trunk Pull Down Switch Failure

The trunk pull down switch may fail causing the trunk lid not to close completely. Our technicians tell us that the failed switch can be replaced without changing the complete pull down motor assembly.

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1991 Cadillac Seville STS Questions

Where is the ABS computer module located for an Allante? (1 answer)

The car is actually a 1991 Cadillac Allante, where is the Controller for the ABS system located and how hard is it to replace?

Losing Oil Problem (1 answer)

I have a 91 Cadillac Seville. This has been a wonderful car and now all of a sudden I am losing oil on a daily basis. I am sure I am now probably out again and now the red warning light came on. What is happening and how much will it cost to repair?

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1991 Cadillac Seville STS Reviews

Had some tranny issues and my back doors no longer open but overall a great running car and I love it!!

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