GMC 2500 Pickup Problem Report
GMC 2500 Pickup Power Brake Units May Leak Fluid From Hydro-Boost Unit
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.
POwer Brake Unit LeakS Fluid From Hydro-Boost Unit - Visitor
Bad hydro-boost unit. Had to replace. Advance Auto has rebuilt unit with lifetime warranty for under $200 plus core charge. - Visitor
hydroboost leaking, dealership confirmed must be serviced for $1200! - Visitor
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