2004 grand prix pwr steering pump replaced at shop. how I can bleed the air from lines by driving it? intermittent noise I think is air in lines. my hours make it diff. to get back to the shop.

NO-bleeds it's self-sounds like you got ripped off on a new pump that was rebuilt. Take it back.

Rack is possibly bad.. If you have replaced the pump and propwrly bleed system

Generally on modern power steering systems, air is just forced into the pump reservoir and is self bleeding.

the power steering pump, you need to bleed out the rack, this is done by filling the power steering system then turning the wheel from left to right in quick repitions.

Bad seal in pwr steering pump or rack could be leaking or one of the hoses. Have a reputable shop or mechanic look at it for you and don't put it off, if it fails when driving it could lock up and cause an accident.

YOU NEED TO BLEED POWER STEERING SYSTEM BY HAVING LOW FLUID AIR ENTER THE SYSTEM.PARK CAR ON SOLID LEVEL GROUND SAFELY RAISE SUPPORT VECHICLE ON JACK STANDS.YOU CAN LEAVE CAR ON GROUND BUT TURNING STEERING WHEELS BACK AND FORTH WILL WEAR SPOT IN TIRES.TURN STEERING WHEEL TO THE LEFT WITH THE ENGINE OFF.CHECK POWER STEERING FLUID.ADD MORE FLUID IF LOW.MAKE SURE FLUID LEVEL ON COLD MARK ON DIP STICK.THE YOU CRANK CAR UP LET IDLE LITTLE HIGH FOR 15 SECONDS.THEN TURN OFF ENGINE.CHECK POWER STEERING FLUID LEVEL MAKE SURE ITS ON COLD MARK AT DIP STICK.THEN YOU START THE CAR UP WHILE IDLING TURN STEERING WHEEL IN BOTH DIRECTIONS SLOWLY TO THE STOPS DONT HOLD IN STOP TURN STEERING WHEEL LEFT AND RIGHT FOR SEVERAL TURNS.STOP ENGINE CHECK FLUID IF FLUID TAN STILL HAS AIR IN SYSTEM.LET CAR SET A LITTLE WHILE TRY THE BLEEDING PROCEDURE AGAIN.THERE IS A REASON POWER STEERING FLUID WAS LOW CHECK ALL POWER STEERING HOSES AT POWER STEERING PUMP TO THE RACK PINION ASSEMBLY.

If you have a warranty from your dealer, you paid for it, or whether it came with it, it doesn't matter, you MAKE them honor it. Take it back there, and MAKE THEM FIX IT! This shouldn't be your problem if you have a warranty. If they aren't honoring it, threaten them with the BBB or court. They will shape up.
I would say power steering pump.First check to make sure there is fluid in the reserve tank and at the proper level if not top it off and whine should stop.If level is correct then maybe try flushing with fresh fluid.
3.8L engine the power steering fluid was never toped/checked.. because it is a pain in the *** to get at (behind the hot as hell alternator), so it probably ran dry, top it up is probably all you have to do.. if the whining presists then you will have to try and bleed the air out by jacking it up, engine off, turn the wheel one side to the other about 25 times.. if that dont quiet it up then you will have to replace the power steering pump.


Power steering pump / fluid level is not hard to check - it is located below the alternator on the passenger side of the engine bay. You need a light to see it. You can get your hand down from the top of the engine to loosen and remove the cap/dipstick.
Here is a link that should help you.http://www.paulstravelpictures.com/GM-Pontiac-Grand-Prix-GTP-Power-Steering-Whine/index.html
Good luck and thank you for using Fixya

If you look and see the hydralic line from the rack & pinion going up to a box, that is your power steering pump

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.

What you need to do is bleed the coolant system of air. There is a metal coolant line runing from one side of the motor to the other, 1 end by the pwr seer pump & upper motor mount and the other end by the throtle body. There's a bleed nipple at each end, its a little tricky cause you have to rev the engine and open & close the nipple making sure coolant is coming out and not steam when you close the nipple. That should take care of your problem.