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Breaking power steering pump shafts

6.5K views 16 replies 10 participants last post by  jj160johnson  
I know this is an old thread but did you ever figure it out? I also have a bone stock 2000 Chevy 4x4 z71 and it has also broken 4 power steering pump shafts. I have replaced the hoses and blew out the cooler with no luck. Installed a new steering box this time also. I’m stumped! Been a heavy equipment mechanic for 30 years and I feel dumb.