GMC Suburban 2500 Problem Report

GMC Suburban 2500 Power Brake Units May Leak Fluid From Hydro-Boost Unit

(10 reports)

Power brake systems using "hydro-boost" may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. Replacement of the hydro-boost unit is the common repair to correct this concern.

I lost power steering and power breaks. Everything works with "Armstrong" steering and breaks, but there is no way my wife can use it this way. -
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i have can you tell if its your brake boost thats gone bad or your master cylinder