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Power Brake Units May Leak Fluid From Hydro-Boost Unit on GMC Suburban 1500

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 110,000 (110,000–110,000)
8 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999
9 people reported this problem