Power Brake Units May Leak Fluid From Hydro-Boost Unit on Cadillac Escalade

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: 170,500 (138,000–195,000)
4 model years affected: 1999, 2000, 2002, 2005
13 people reported this problem
Viewing 1 - 5 of 5 comments
Start small leak , and gets worse I fix it by changing the hydro boost , I spend around $ 280 on part and about, 2 hours of work
Hydro boost needs replacing, starts out as small leak then gets worse. Power steering fluid pours right out under the car if you don't get the leak fixed and makes a whining sound
The Hydro-Booster is leaking all over the left front wheel well. Started out as a slow leak and now is a large leak.