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.
2000 Saturn SLFACTORY OEM SERVICE PROCEDURE
Variable Effort Steering Test
- Disconnect high pressure line at power steering pump, and install power steering System Tester (SST SA9134C), or equivalent. Install proper scan tool to data link connector. Open gate valve on power steering system tester.
- Run engine until it reaches normal operating temperature. Replace any fluid lost during power steering system tester installation. Bleed system if necessary. See HYDRAULIC SYSTEM BLEEDING under LUBRICATION.
- Using scan tool, command VES actuator to provide FULL ASSIST (0 percent duty cycle). Increase engine speed to 1500 RPM, and maintain this speed while observing flow rate. Flow rate should be 2.35-2.85 gal/min (8.88-10.77 L/min). If not within range, replace VES actuator. To remove and install VES actuator, see POWER STEERING PUMP under OVERHAUL.
- Using scan tool, command VES actuator to provide NO ASSIST. Increase engine speed to 1500 RPM, and maintain this speed while observing flow rate. Flow rate should be .40-.90 gal/min (1.51-3.40 L/min). If not within range, replace VES actuator. After completing flow test, stop engine and remove power steering reservoir cap. This will release system pressure prior to removing tester.
Factory Service Tools
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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.
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