ok so my brakes failed today.. and i made it to a shop, and and after being a nice place and replacing my main vacuum line for free and not chargign em for an estimate he has deterrmined that the vacuum booster itself went bad..... what the hell.. what are the possible causes? another $300 into the brake system......

First of all... ...did it just go all at once??

I'd say age. Check the seals... :?

no, i heard what sounded like a vacuum leak the other day, so i was wary, and i picked up on the fact thatr it was somehow tied into the brakes, but all of a sudden i lost ALMOST all pressure, i was back to the 40'*... all mech brakes.. lol anyway not more than 2 months ago i had a brand new master cylinder put on......oh well.. i got the car for free, and have had no major probs other than these 2 brake system issues

wow...scary...

yea your telling me i almost added to the white curse a couple of times

Hehe, just wait.... j/k!

Good thing you made it out ok, bad breaks are scary!

Our 98 yukon'* rotors were absolutely HORRID. My dad kept talking abuot how bad they were getting, and one day we were picking up the car from his office, and i drove it, my mom stayed in her car. Gross Vehicle weight of that thing is 6000lbs.... or 3 tons. Well on the freeway doing about 70 mph, i hit the brakes to slow down, the whole thing was starting to bounce from the shuddering! Scariest braking ever...