Here's a general outline of the process. Remember, this is not a substitute for a professional repair manual:
1. Safety First:
* Disconnect the battery's negative terminal. This prevents electrical shorts.
* Raise the vehicle and secure it safely on jack stands. Never work under a vehicle supported only by a jack.
* Wear safety glasses and gloves.
2. Access the Power Steering Pump:
* The pump's location varies slightly depending on the engine (4.8L, 5.3L, or 6.0L). Your repair manual will show the exact location. Generally, it's found in the engine compartment, often near the front of the engine and connected to the steering gear.
* You'll likely need to remove some components for better access. This might include:
* Air intake components: Disconnect hoses and possibly the airbox.
* Serpentine belt: This is crucial. Use a belt tensioner tool to release the tension before removing the belt. Diagram the belt routing carefully *before* removing it.
* Various hoses and lines: Carefully disconnect the power steering pressure and return lines. Have a drain pan ready as some fluid will leak.
* Possibly other brackets or components: Your repair manual will provide specifics.
3. Remove the Power Steering Pump:
* Once you have good access, locate the pump mounting bolts.
* Loosen and remove the bolts. They may be difficult to access.
* Carefully remove the pump. It may be heavy, so be prepared.
4. Install the New Power Steering Pump:
* Install the new pump in reverse order of removal. Ensure it's seated correctly.
* Replace the mounting bolts and tighten them to the specifications in your repair manual. Over-tightening can damage the pump or engine block.
* Reconnect all hoses and lines. Ensure all connections are secure and free of leaks.
* Reinstall the serpentine belt, following the routing diagram precisely.
* Reconnect the air intake components.
* Reconnect the battery's negative terminal.
5. Bleed the Power Steering System (Crucial):
* After reassembly, you'll need to bleed the air out of the power steering system. This is essential for proper functioning. The repair manual will detail the bleeding procedure. It usually involves turning the steering wheel lock-to-lock several times while the engine is running.
6. Test and Inspect:
* Start the engine and check for leaks. Inspect all connections and the pump itself.
* Test the power steering. The steering should feel smooth and responsive.
Important Considerations:
* Power steering fluid: You'll need the correct type and amount of power steering fluid for your Escalade. Refer to your owner's manual or repair manual. Dispose of old fluid properly.
* Torque specifications: Use a torque wrench to tighten bolts to the manufacturer's recommended specifications. Incorrect torque can lead to leaks or damage.
* Professional help: If you're not comfortable with this repair, take your Escalade to a qualified mechanic. This job is more involved than it might initially seem.
This is a general overview. Always consult your vehicle's repair manual for specific instructions, diagrams, and torque specifications. Failure to do so could lead to damage or injury.
