Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
ELC System Check
1998 Buick RivieraSECTION ELC System Check
- Ensure height sensor and link assembly are in good condition before performing system operation test. Place vehicle on flat surface. Measure distance from ground to rocker panel in front of rear wheelwell opening. See Figure .
- Turn ignition on. Add 300-350 lbs. (136-159 kg) of weight to rear of vehicle. After 17-27 second delay, compressor should turn on and vehicle should start to rise. Vehicle should rise to within 3/4" (19 mm) of measurement made in step 1 .
- Remove load from vehicle. After 17-27 second delay, vehicle should start to lower. Within 3 1/2 minutes, exhaust should stop and vehicle should be within 3/4" (19 mm) of measurement made in step 1 . If ELC system does not function as specified, perform appropriate test. See ELC SYSTEM SYMPTOM table.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.