Chevrolet Repair: power steering problems Chevrolet S-10 pickup, power steering problems, chevrolet s 10 pickup

Question
I have a Chevrolet S-10 pickup, diesel, 4x4, 2.5 TD.
I am having problems with the power steering. There is no problem when I am driving to turn corners; however if I have to parallel park, or make a turn from a stationary position, the steering is very hard and almost impossible to turn.  Do I need a new power steering pump?

Answer
HI JANET,YOU HAVE RARE TRUCK !!!HAVE YOU CHECKED YOUR POWER STEERING FLUID ??? I BET YOU HAVE,JUST ASKING. IF IT IS LOW IT WOULD CAUSE THIS. THE OTHER POSSIBLE CAUSE IS A LOOSE P/S BELT. CK AND MAKE SURE IT IS TIGHT. THIS MAY HAVE A SERPENTINE BELT THAT DRIVES ALL THE OTHER PULLEYS AS WELL. IF SO THE BELT IS PROBABLY OK..IF ALL OF THE ABOVE ARE OK THE PUMP IS MORE THEN LIKELY FAILING..THE ONLY WAY TO BE 100% SURE IS TO PUT A P/S PRESSURE GAUGE IN THE PRESSURE SIDE OF THE SYSTEM..IS THERE ANY WHINING NOISE WHEN YOU TURN THE WHEEL ??? IF SO THE LAST THING I CAN THINK OF IS DID ANYONE PUT A FILTER OR SCREEN IT THE RETURN SIDE OF THE LINE,IF SO THE SCREEN MAYBE PLUGGED, WHICH WOULD CAUSE THE PUMP TO STARVE OF OIL.LET ME KNOW IF YOU NEED MORE INFO, PLEASE GET BACK TO ME. WHEN YOU LEAVE THIS SITE WOULD YOU MIND RATING MY ANSWER, THANK YOU,,,,TOM..