I noticed my 2000 chevrolet - suburban k2500 vehicle pulling to the left at light to moderate braking. noticed oil like stains to under side of drivers front wheel well area. i had it inspected by a certified service station. during inspection they found a leak coming from the brake hydro booster, and power assist high pressure hoses. i was told that the hydro booster needed replacing, along with the two lines coming from the hydro booster, at a cost of $1200.00. i was told that the driver could lose complete power assist to the steering and brakes, causing a potentially hazardous driving condition. g.m. is responsible for maintaining reliable safety components for all their vehicles. under the nhtsa campaign id number: 05v005000, under the notes section: gm campaign no. 05001. this action is deemed a safety improvement campaign and is not being conducted under the safety act. the company has informed nhtsa that it will provide the modifications described above free of charge. *tr