so i have a dodge ram v8 5.9L. i just got the truck and i noticed a weird noise/ vibrating feeling under my feet when i hit bumps. im not sure what it could be. any ideas? also, my parking break doesnt work. i push it all the way to the floor and it clicks just fine, no pressure pushing it down. but then the peddle just comes back up after pushing it. cable seems to be it tact just fine. maybe just tighten??