Re: huge problems with the brakes...help!
Just leaves me with more questions: would ABS throw a code? would a bad ABS sensor result in vibration (a la breaking traction with ABS)?
Also how long have you owned and driven the van, and when did this start?
I believe anything you do to one side you should do to the other also, but you've already got me out of my depth on brakes at this point so hopefully others will chime in with useful info.