1991 Cadillac Seville STS Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Cadillac Seville STS
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1991 Cadillac Seville STS ProblemsHeating 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.
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.
The high-pressure power steering lines are known to leak.
1991 Cadillac Seville STS QuestionsWhere 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?
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?