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Q: Low Rear Suspension on 1990 Cadillac DeVille

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I need to figure out how to raise the suspension on my 1990 Coupe De Ville. Is there a switch underneath the car, in the trunk or other place?
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It sounds like you automatic level ride system in not working. The fault could be an air leak in the system, a faulty compressor, a faulty height sensor, or a wiring issue. The compressor is under the hood and the height sensor is located under the rear of the car.
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