While driving home from work my brake light appear on my dash board. i approached a red light when my i found it very difficult to apply the brake. i heard a loud noise and grinding coming from the front end of my 2008 armada. my suv stopped with in inches of rear ending a car very scary. i pulled my truck into a parking lot, turned it off and then back on again. this seemed to reset the light. i called the dealership to see if this was a know problem and they said it was i need to have my brake booster replaced at a cost of 820.00 plus tax. this would be an out of cost expense because my truck is out of warranty. if this is a know problem why won't nissan recall this part before someone gets killed. *tr