Tools You'll Need:
* Wrench Set (metric): Various sizes, including sockets, ratchets, and extensions.
* Power Steering Pump Wrench: This is often a special tool, sometimes with a three-pronged design, to grip the pump pulley.
* Fluid Catch Pan: To collect the old power steering fluid.
* New Power Steering Pump: Ensure you get the correct part for your specific Yukon engine (e.g., 4.8L, 5.3L, 5.7L).
* New Power Steering Fluid: The correct type and amount specified in your owner's manual.
* Jack and Jack Stands: Essential for safe vehicle lifting.
* Torque Wrench: For tightening bolts to the manufacturer's specifications.
* Gloves: To protect your hands.
* Shop Rags or Paper Towels: For cleaning up spills.
* Pry Bar (optional): May be needed to help break loose stubborn connections.
* Fluid Transfer Pump (optional): Makes fluid removal easier.
Procedure:
1. Safety First: Disconnect the negative battery terminal to prevent accidental electrical shorts. Secure the vehicle on jack stands after safely lifting it.
2. Drain the Power Steering Fluid: Locate the power steering fluid reservoir. Carefully remove the cap and use a catch pan to drain the fluid.
3. Remove the Power Steering Pump Pulley: Use the appropriate wrench to remove the pulley. This can be difficult; you might need to use a breaker bar or impact wrench. Pay close attention to how the pulley is aligned with the pump.
4. Disconnect the Power Steering Hoses: Carefully detach the high-pressure and low-pressure lines from the pump. Have a catch pan ready as some fluid will likely escape. Note the orientation of the hoses for reinstallation. You may need line wrenches to prevent damaging the fittings.
5. Remove the Power Steering Pump Mounting Bolts: Locate and carefully remove the bolts holding the power steering pump to the engine block. You might encounter some resistance.
6. Remove the Power Steering Pump: Once the bolts are removed, gently pull the pump from the engine. It may be slightly snug.
7. Install the New Power Steering Pump: Carefully align the new pump with the engine block and install the mounting bolts. Tighten them to the correct torque specification (check your repair manual).
8. Reconnect the Power Steering Hoses: Carefully reattach the high-pressure and low-pressure hoses to the new pump, ensuring a secure and leak-free connection.
9. Install the Power Steering Pump Pulley: Align and reinstall the pulley. Tighten to the specified torque.
10. Fill the Power Steering Fluid Reservoir: Add new power steering fluid to the reservoir, checking the level frequently. You may need to run the engine (with the steering wheel turned lock-to-lock several times) to purge air from the system and get the fluid circulating correctly. Check for leaks. Continue adding fluid as needed until the reservoir is at the correct level.
11. Check for Leaks: Carefully inspect all connections and hoses for leaks.
12. Reconnect the Battery Terminal: Reattach the negative battery terminal.
13. Test Drive: After completing the job, test drive the vehicle to ensure the power steering is functioning correctly.
Important Notes:
* Consult a Repair Manual: This is crucial for specific torque specifications, component locations, and detailed instructions.
* Safety: Always prioritize safety. Wear safety glasses and gloves. Work in a well-ventilated area.
* Professional Help: If you are not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper installation can cause significant damage.
This is a simplified explanation. Referencing a detailed repair manual specific to your 2001 GMC Yukon is absolutely essential for a successful and safe repair.
