Tools You'll Need:
* Repair Manual: Essential for torque specs, diagrams, and specific procedures.
* Jack and Jack Stands: Safety first! Secure the vehicle properly.
* Wheel Chocks: Added safety measure.
* Wrench Set (Metric): Various sizes will be needed.
* Socket Set (Metric): Including deep sockets.
* Ratchet: A good quality ratchet will make the job easier.
* Torque Wrench: Crucial for proper tightening of bolts.
* Fluid Catch Pan: To collect the old power steering fluid.
* New Power Steering Pump: Make sure you get the correct pump for your Yukon's engine.
* New Power Steering Fluid: The correct type for your vehicle.
* New Power Steering Belts (if necessary): Inspect the belts before starting; they may need replacing.
* Pliers: Possibly needle-nose pliers.
* Screwdrivers (Phillips and Flathead): May be needed depending on your specific model.
* Gloves: To protect your hands.
* Safety Glasses: To protect your eyes.
* Wrench for draining power steering fluid
Procedure:
1. Safety First: Disconnect the negative battery terminal. Raise the vehicle using the jack and secure it with jack stands. Engage the parking brake and use wheel chocks.
2. Drain the Power Steering Fluid: Locate the power steering fluid reservoir. Carefully remove the cap and drain the fluid into your catch pan.
3. Remove the Power Steering Belts: Loosen the belt tensioner pulley (usually a bolt needs to be loosened to release tension) and remove the power steering pump belt. You might need a special tool for this, depending on your vehicle's design. Make note of how the belt is routed.
4. Disconnect the Power Steering Lines: There will be high-pressure and low-pressure lines connected to the pump. Use appropriately sized wrenches to loosen and remove these lines. Be prepared for some fluid leakage; have rags ready. Some lines might have retaining clips that need to be removed first.
5. Remove the Power Steering Pump Mounting Bolts: Locate the bolts securing the power steering pump to the engine block. Carefully remove these bolts using the appropriate socket.
6. Remove the Old Power Steering Pump: Once the bolts are removed, the pump should come off relatively easily. However, it might be stuck due to corrosion. If it’s stubborn, use a pry bar carefully to avoid damage.
7. Install the New Power Steering Pump: Carefully install the new power steering pump, ensuring it is properly aligned with the engine block. Replace the mounting bolts and tighten them to the specified torque (see your repair manual).
8. Reconnect the Power Steering Lines: Carefully reconnect the power steering lines. Make sure they are securely attached.
9. Install the Power Steering Belt: Route the power steering belt according to the diagram in your repair manual.
10. Fill the Power Steering Fluid Reservoir: Add the correct type of power steering fluid to the reservoir, checking the fluid level frequently.
11. Bleed the Power Steering System: Start the engine and turn the steering wheel from lock to lock several times to bleed the air out of the system. Check the fluid level again and add more fluid if necessary.
12. Check for Leaks: Inspect the lines and pump for any leaks. If leaks are present, tighten the connections or replace the necessary parts.
13. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
14. Reconnect the Battery: Reconnect the negative battery terminal.
Important Notes:
* Consult a repair manual: This is crucial for specific details relevant to your Yukon's model and engine. Improper torque values can damage components.
* Safety first: Always disconnect the battery before working on the electrical system. Use jack stands to support the vehicle properly.
* Fluid disposal: Dispose of old power steering fluid properly according to your local regulations.
* If you are not comfortable performing this repair, take your vehicle to a qualified mechanic. This is a complex repair that can lead to damage if not performed correctly.
This guide provides a general overview. Detailed instructions, torque specifications, and diagrams are essential for successful completion. Always refer to your vehicle's repair manual for accurate and safe procedures.
