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Home >> Cadillac >> 1989 >> Seville Base >> Repair and Diagnosis (Single Page) >> Suspension >> Rear Suspension >> Suspension - Rear Level Control >> System Testing >> System Operational Test

System Operational Test

  1. Unload vehicle. With ignition off, check riding height. Turn ignition on. Add 300-350 lbs. (136-159 kg) load to trunk. Compressor should start operating within approximately 7-10 seconds. Vehicle should rise to within 3/4" (19 mm) of riding height.
  2. Remove load from trunk. Exhaust should start within approximately 7-10 seconds. Within 2 minutes, exhaust should stop and vehicle should be within 3/4" (19 mm) of riding height.
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