Hi all, I have a 2000 Dodge Ram 1500 QC Auto, 5.9,360 w/77k miles. When I'm driving between 40mph and 50mph and then apply the brakes it does a weird Vibration/seen in the side view mirror the truck bed bouncing and even in the cab also can feel it in the pedal. but really noticable on a down hill. I'm not sure if its coming from underneath the truck. vibration/bounce does peak at 40 and goes away at lower speeds and if its still there its not noticable. I did have a "tread" seperation blowout but tire was still inflated on my right rear, and it seems like every since its been doing this , Now I thought it was my brakes so I replace them not once but twice.. 1st time 07/17/06 new rotors and pads then on 04/30/07 to find myself feeling this pulsation/vibration or bouncing again so I replace again turned the rotors and replce the pads, NOw its 10/28/07 and still feel it so I replace the back brakes turned drums to notice they seem appear to be in very good wear after 4 yrs or so..but still feel this after replacing them. What other problem could this be causing this. is it steming from I was think maybe shocks, drive shaft, Would and alignment be in order??? Experiences? If i take it in I'm almost sure they'll just give me the typical "We didn't seem to find anything wrong". or " We looked underneath, and everything seems to look fine and have to give them 100.00 for looking.