Changing a power steering pump

Hello,

You must remove the serpentine belt to start and disconnect the battery. Here is a guide and a video to help you get the job done:

https://youtu.be/MtHG4y_rdMI

and

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

Check out the diagrams (below).

Please let us know if you need anything else to get the problem fixed.

Cheers

Yes, you need a pulley remover and installer. See if auto parts rent it.

Welcome to 2carpros and TY for the donation

Notes

Water Pump Replacement (RPO's LZE/LZ4/LZ9)
Removal Procedure

Drain the cooling system. Refer to Draining and Filling Cooling System (LS4 Static Fill) Draining and Filling Cooling System (LZE, LZ4, LZ9 Static Fill) Draining and Filling Cooling System (9C1, 9C3 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LZE, LZ4, LZ9, 9C1, 9C3 GE 4771 Fill).
Loosen the water pump pulley bolts.
Remove the drive belt.
Remove the water pump pulley bolts and pulley.

Remove the water pump bolts.
Remove the water pump and gasket.
Clean the water pump mating surfaces.
Installation Procedure

Position a NEW water pump gasket and the water pump to the engine front cover. Notice: Refer to Fastener Notice.
Install the water pump bolts. Tighten the bolts to 10 Nm (89 inch lbs.) .

Install the water pump pulley and bolts.
Install the drive belt.
Tighten the water pump pulley bolts. Tighten the bolts to 25 Nm (18 ft. lbs.) .
Fill the cooling system. Refer to Draining and Filling Cooling System (LS4 Static Fill) Draining and Filling Cooling System (LZE, LZ4, LZ9 Static Fill) Draining and Filling Cooling System (9C1, 9C3 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and Filling Cooling System (LZE, LZ4, LZ9, 9C1, 9C3 GE 4771 Fill).
Inspect for leaks.

It looks like in either V6 configuration, it calls for pump pulley removal as one of the initial steps in removal. It does not say why, and the illustration is not detailed enough to show any reason. Removal of the pulley requires a special tool, a power steering pump pulley removal tool. It may be available at a rental store, or a parts store that rents tools. I would imagine it is a fairly common tool requested.

What type of puller are you using? A power steering pulley puller is not very large.

I have two illustrations, they are for the two V6 options. It looks like the belt routing is the same in both, I believe the illustration only differs with the engine picture.
The first is the 3.5, and the 3.9 is the following.

It sounds like you have a defective pump that is pulling in air which makes the fluid have air in it and the noise will never go away until you redo the pump. May I suggest an AC Delco pump.

Here is a guide to show you what you are in for when doing the job:

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

and you should flush the system.

https://www.2carpros.com/articles/power-steering-fluid-flush

Here are some diagrams that shows how it will be on your car (below).

Please let us know what happens.

Cheers, Ken

Jack wheels off ground put jack stands beneath vehicle. Start car and turn one way until end and hold for thirty seconds. Turn other way and repeat. Do this five times make sure of no leaks anywhere. Then see what you have.

Hello,

Here is a guide to help walk you through the steps of changing the power steering pump with diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

If it's leaking it's either a loose line or you have a bad steering gear or you have a line that is broken going to steering gear. You should see oil under your car when you park.