when i hit my brakes the truck shakes when it gets to 35/40 mph then stops when i get below 30. i cant feel anything in the brake pedal but the truck noticably shakes. its been like that for a few months and it hasnt gotten worse at all. any ideas?

 

Have you inspected the brakes? Have you had their runout measured? Were the rotors replaced or turned during the last brake job? Who has installed the lug nuts since then, and did everyone follow this TSB?