Trying to replace water pump can get to last bolt at power steering pump pulley interference 2004 pontiac gran prix gt 3.8

To get that last bolt out you need to move the power steering pump out of the way. Just remove the two bolts holding the PS pump and push it aside. You don't have to remove the pump hoses you just need to move it an inch towards the firewall.

can rent or buy a power steering pully puller from the parts store it has instructions on how to use and then remove it is also used to install the pully

you may need to take the pulley off to be able to get to it

You do not need to remove power steering pump, you can rent a power steering pulley puller tool from most auto parts, just remove the pulley, its much easier and faster, they you can get to that end bolt on the water pump.

in some case you half to remove the power steering pully to complete this

WELL YOU NEED TO DRAIN COOLANT SYSTEM.PLACE A LARGE DRAIN PAN UNDER THE RADIATOR TO CATCH COOLANT WHILE DRAINING RADIATOR.ONCE ALL COOLANT DRAINED OUT.REMOVE DRIVE BELT.REMOVE WATER PUMP PULLEY.REMOVE POWER STEERING PUMP AND MOVE IT ASIDE.THEN REMOVE WATER PUMP.MAKE WATER PUMP MOUNTING SURFACE CLEAN THEN INSTALL NEW WATER PUMP AND GASKET IN PLACE.IF WATER PUMP GASKET IS PAPER TYPE PUT GASKET SEALANT ON BOTH SIDES OF THE GASKET.IF YOU HAVE RUBBER GASKET DONT USE NO GASKET SEALANT.INSTALL NEW WATER PUMP TORQUE LONG BOLTS TO 25 FT LBS AND TORQUE SHORT BOLTS TO 16 FT LBS.TORQUE WATER PUMP PULLEY TO 115 INCH POUNDS.TORQUE POWER STEERING PUMP BOLTS TO 25 FT LBS.THEN INSTALL DRIVE BELT.FILL THE COOLANT SYSTEM.START THE VECHICLE AND CHECK FOR LEAKS.

no, here is procedure according to autozone.com

3.8L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Drain the engine coolant.
3. Remove or disconnect the following:
   
   Negative battery cable. Drive belt Water pump pulley Power steering pump and move it aside Water pump
   
   

   Fig. Exploded view of the water pump assembly mounting-3.8L engine
   
   

To install:

1. Install or connect the following:
   
   Water pump using a new gasket and torque the long bolts to 25 ft. lbs. (34 Nm) and the short bolts to 16 ft. lbs. (22 Nm) Water pump pulley and torque the bolts to 115 inch lbs. (13 Nm) Power steering pump and torque the bolts to 25 ft. lbs. (34 Nm) Drive belt Negative battery cable
   
2. Fill the cooling system.
3. Start the vehicle and check for leaks, repair if necessary.

access 3 power steering pump mounting bolts thru the holes in the pulley, move pump out of the way and install new water ump.

no you have to go thru the holes in the front of the power steering pulley. Usually a ratchet with a deep 13mm socket will do to remove the 2 bolts located at 12 and 6 o'clock then you will be able to move it out of the way

2004 Pontiac Grand Prix V6-3.8L VIN 2

Power Steering Pump: Service and Repair
Power Steering Pump Replacement
NOTE: The content of this article / image reflects the changes called out by TSB: 05-02-32-004.

Power Steering Pump Replacement
Removal Procedure
1. Remove the accessory drive belt.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the tire and wheel assembly.
4. Disconnect the power steering pressure hose from the power steering pump.
5. Disconnect the power steering return hose from the power steering pump.
6. Disconnect the harness connector (4) from the power steering pump (1).
7. Remove the power steering mounting bolts from the power steering pump.
8. Remove the power steering pump from the engine.
9. Remove the power steering pump pulley from the power steering pump.
10. Remove the power steering pump reservoir from the power steering pump.
Installation Procedure
1. Install the power steering pump reservoir to the power steering pump.
2. Install the power steering pump pulley to the power steering pump.
3. Position the power steering pump to the engine.
Notice: Refer to Fastener Notice in Service Precautions.
4. Install the power steering pump mounting bolts.
Tighten the bolts to 25 Nm (18 ft. lbs.).
5. Connect the power steering pressure hose to the power steering pump.
6. Connect the power steering return hose to the power steering pump.
7. Install the harness connector (1) to the power steering pump (4).
8. Install the accessory drive belt.
9. Fill the power steering system with fluid.
10. Bleed the power steering system.
11. Operate the power steering system and inspect for power steering system leaks.