GMC Yukon Problem Report

GMC Yukon 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.

Leaks power steering fluid between the hydro-boost unit and master cylinder. Have not fixed yet, just add power steering fluid when needed. -
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