power steering not working

By wes104
January 12, 2019 in 1988-1999 Chevrolet & GMC C/K GMT400 Platform

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wes104

Posted January 12, 2019

i have a 1989 gmc r3500 with a 454 that when its below 1000 rpms the power steering doesn't work but as soon as you rev it it works.its hydro boost if that helps any.the pump also runs the brakes and as far as i can tell they work fine.should i replace the pump or hydraulic brake booster or look elsewhere

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