So I have the bad brake booster symptoms in my 2004 Titan. Original owner. It started about three years ago and it is intermittent. Anyway, you guys that had the dealer replace theirs did you get any help from Nissan after the class action suite? Also where is the best place to purchase one from and is there a write up anywhere on how to replace the unit ? I have the VDC on mine, is there a difference in boosters? . Thanks.