Power Brake Units May Leak Fluid From Hydro-Boost Unit on GMC Suburban 2500

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.

RepairPal Verified
Average mileage: 157,500 (150,000–165,000)
8 model years affected: 1992, 1993, 1994, 1995, more1996, 1997, 1998, 1999
11 people reported this problem
1 person shared problem details
I lost power steering and power breaks. Everything works with "Armstrong" steering and breaks, but there is no way my wife can use it this way.
Related Items:
i have can you tell if its your brake boost thats gone bad or your master cylinder
The anti-lock brake system (ABS) front wheel speed sensors are prone to failure. When a sensor...
Starter died trying to start with dead fuelpump, both are replaced starter switch is good, new...

Related Content