Tools and Materials You'll Need:
* New power steering fluid: Use the type recommended in your owner's manual (usually Dexron III or equivalent). Get enough to completely flush the system.
* Funnel: A small funnel will help avoid spills.
* Wrench(es): You'll need wrenches to access the power steering fluid reservoir and potentially the return line (size will depend on your car). Check your manual for the correct size.
* Drain pan: To catch the old fluid.
* Jack and jack stands (highly recommended): This will give you better access to the reservoir and potentially the return line. Never work under a vehicle supported only by a jack.
* Gloves: Power steering fluid can be messy and irritating to skin.
* Rags or shop towels: For cleaning up spills.
* Hose (optional but helpful): A short length of clear tubing to help siphon fluid.
* Syringe (optional but helpful): To accurately measure fluid levels.
Procedure:
1. Safety First: Park your Grand Prix on a level surface, engage the parking brake firmly, and chock the wheels. If jacking up the car, use jack stands for safety.
2. Locate the Power Steering Fluid Reservoir: This is usually a plastic reservoir with markings indicating the minimum and maximum fluid levels. It's typically located under the hood, often near the firewall.
3. Check the Fluid Level: Before doing anything, check the fluid level. If it's already low, you might simply need to top it off rather than perform a complete flush.
4. Drain the Old Fluid (Partial Flush):
* Locate the Drain Plug (if applicable): Some systems have a drain plug at the bottom of the reservoir; others don't. Check your manual. If present, carefully remove the plug, letting the old fluid drain into your drain pan.
* Siphon (If no drain plug): If there's no drain plug, you can carefully siphon out as much of the old fluid as possible using a hose and a suction method (place one end of the hose in the reservoir, suck on the other end to create suction, then let gravity drain it into the drain pan). This method might be less thorough.
5. Refill the Reservoir: Add new power steering fluid to the reservoir, following the "minimum" and "maximum" lines.
6. Run the Engine: Start the engine and turn the steering wheel fully left and then fully right several times. This circulates the fluid through the system. Keep an eye on the fluid level; it might drop slightly as air is purged from the system.
7. Check and Refill: Turn off the engine. Check the fluid level and add more fluid as needed. Repeat steps 5 and 6 until the fluid remains at the correct level after several steering wheel rotations. This is often a multi-step process. You may not need a complete flush, particularly if the fluid isn't severely contaminated.
8. Complete Flush (More Thorough Method): For a more complete flush (recommended if the old fluid is dark or contaminated), you might consider disconnecting the return line (this usually requires a special tool or wrench to avoid damage). This allows you to actively pump the old fluid out as you refill the reservoir. This is more advanced and may require specialized tools and expertise; consult a repair manual for this approach.
9. Check for Leaks: After the flush, carefully inspect the system for any leaks.
10. Dispose of Old Fluid Properly: Power steering fluid is hazardous waste. Dispose of it according to your local regulations.
Important Notes:
* Consult your owner's manual: This guide provides general information. Always refer to your vehicle's repair manual for precise instructions and torque specifications.
* Safety: Always prioritize safety. Never work under a vehicle supported only by a jack. Use jack stands.
* Fluid Type: Use the correct type of power steering fluid. The wrong fluid can damage your system.
If you are uncomfortable performing this task yourself, it's best to take your Grand Prix to a qualified mechanic. They have the tools and expertise to do the job safely and effectively.
