Car Problem Reports

GMC Yukon Denali Power Brake Units May Leak Fluid From Hydro-Boost Unit

GMC Yukon Denali Problem
7 Reports
Me Too

Model Years Affected: 1999, 2000, 2003, 2004, 2005, 2006, 2007

Average Mileage: 136,000 mi (94,000 mi - 178,000 mi)


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.

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