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.
Average mileage: 122,333 (90,000–157,000)
17 people reported this problem
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Seal leak on the hydro-boost unit. Leaking powersteering fluid badly
leaking power steering fluid at unit and also inside cab onto floor causing slick brake & accelerator pedals and general mess.
Leak in the power brake booster for 95 CK2500 suburban. Replaced the booster!