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Home >> Chevrolet >> 1991 >> APV >> Repair and Diagnosis (Single Page) >> Suspension >> Electronic Suspension >> Suspension - Electronic Level Control >> System Test >> System Operational Test

System Operational Test

  1. Unload vehicle. With ignition off, check riding height. Turn ignition on. Add 300 lbs. (136 kg) load to rear passenger compartment. Compressor should start operating after a time delay of approximately 8-15 seconds. Vehicle should rise to within 1" (25.4 mm) of curb height.
  2. Remove load from passenger compartment. Exhaust should start within 8-15 seconds. Within 2 minutes, exhaust should stop and vehicle should be within 1" (25.4 mm) of curb height.
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