2003 cadillac escalade ext metal brake line problem. i noticed a leak and i took my truck in to be checked out. the service tech advised that the metal brake line was corroded and needed to be replaced. i questioned how can that happen? why wasn't it noticed during previous service? what caused the problem? can this happen again? i requested investigation of parts and verification of recalls. "i was told that battery acid dripped on line". i would like to file this complaint because the answer i received does not make any sense, especially if all service and work done to my escalade ext truck were completed my the dealer. my battery had no corrosion and i do not live insalt belt state. i feel this brake line problem is a defect. this problem occurred suddenly, with no warning. *tr