June 17, 200718 yr my power steering pump is making noises and im pretty sure its goin out and i dont know what ratio it is but if i have a free pump from anouther motor and the ratio is 12 to 1 will it still work? does anyone know how to find out my ratio
June 19, 200718 yr Actually the ratio deals more with the steering gear box moreso than the pump. Typically a GM pick-up pump will fit another without much trouble. The difference comes from whether or not the vehicle you're stealing the pump from has Hydro-Boost (pump will have two return lines), or not. If yours doesn't, and the useable pump doesn't, you're in business.
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