I was just looking into new pads and rotors for my 2004 Grand Caravan (3.3 liter) and the guy at Canadian Tire said I need to know which pads I have. Apprently there are 2 types of pads for that model, one with a spring and one without. He was just reading this off the computer screen but couldn't tell me more. Logistically, I can't remove my pads and then run them up there to match them up (they probably won't have them in stock anyway)...can anybody tell me if there is anyway in which I can identify them before removing them, or if I even have to match them up to my current pads?

Thanks, Dave